--- _id: '12646' abstract: - lang: eng text: Assessment of water resources from remote mountainous catchments plays a crucial role for the development of rural areas in or in the vicinity of mountain ranges. The scarcity of data, however, prevents the application of standard approaches that are based on data-driven models. The Hindu Kush–Karakoram–Himalaya mountain range is a crucial area in terms of water resources, but our understanding of the response of its high-elevation catchments to a changing climate is hindered by lack of hydro-meteorological and cryospheric data. Hydrological modeling is challenging here because internal inconsistencies—such as an underestimation of precipitation input that can be compensated for by an overestimation of meltwater—might be hidden due to the complexity of feedback mechanisms that govern melt and runoff generation in such basins. Data scarcity adds to this difficulty by preventing the application of systematic calibration procedures that would allow identification of the parameter set that could guarantee internal consistency in the simulation of the single hydrological components. In this work, we use simulations from the Hunza River Basin in the Karakoram region obtained with the hydrological model TOPKAPI to quantify the predictive power of discharge and snow-cover data sets, as well as the combination of both. We also show that short-term measurements of meteorological variables such as radiative fluxes, wind speed, relative humidity, and air temperature from glacio-meteorological experiments are crucial for a correct parameterization of surface melt processes. They enable detailed simulations of the energy fluxes governing glacier–atmosphere interaction and the resulting ablation through energy-balance modeling. These simulations are used to derive calibrated parameters for the simplified snow and glacier routines in TOPKAPI. We demonstrate that such parameters are stable in space and time in similar climatic regions, thus reducing the number of parameters requiring calibration. article_processing_charge: No article_type: original author: - first_name: Francesca full_name: Pellicciotti, Francesca id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70 last_name: Pellicciotti - first_name: Cyrill full_name: Buergi, Cyrill last_name: Buergi - first_name: Walter Willem full_name: Immerzeel, Walter Willem last_name: Immerzeel - first_name: Markus full_name: Konz, Markus last_name: Konz - first_name: Arun B. full_name: Shrestha, Arun B. last_name: Shrestha citation: ama: 'Pellicciotti F, Buergi C, Immerzeel WW, Konz M, Shrestha AB. Challenges and uncertainties in hydrological modeling of remote Hindu Kush–Karakoram–Himalayan (HKH) basins: Suggestions for calibration strategies. Mountain Research and Development. 2012;32(1):39-50. doi:10.1659/mrd-journal-d-11-00092.1' apa: 'Pellicciotti, F., Buergi, C., Immerzeel, W. W., Konz, M., & Shrestha, A. B. (2012). Challenges and uncertainties in hydrological modeling of remote Hindu Kush–Karakoram–Himalayan (HKH) basins: Suggestions for calibration strategies. Mountain Research and Development. International Mountain Society. https://doi.org/10.1659/mrd-journal-d-11-00092.1' chicago: 'Pellicciotti, Francesca, Cyrill Buergi, Walter Willem Immerzeel, Markus Konz, and Arun B. Shrestha. “Challenges and Uncertainties in Hydrological Modeling of Remote Hindu Kush–Karakoram–Himalayan (HKH) Basins: Suggestions for Calibration Strategies.” Mountain Research and Development. International Mountain Society, 2012. https://doi.org/10.1659/mrd-journal-d-11-00092.1.' ieee: 'F. Pellicciotti, C. Buergi, W. W. Immerzeel, M. Konz, and A. B. Shrestha, “Challenges and uncertainties in hydrological modeling of remote Hindu Kush–Karakoram–Himalayan (HKH) basins: Suggestions for calibration strategies,” Mountain Research and Development, vol. 32, no. 1. International Mountain Society, pp. 39–50, 2012.' ista: 'Pellicciotti F, Buergi C, Immerzeel WW, Konz M, Shrestha AB. 2012. Challenges and uncertainties in hydrological modeling of remote Hindu Kush–Karakoram–Himalayan (HKH) basins: Suggestions for calibration strategies. Mountain Research and Development. 32(1), 39–50.' mla: 'Pellicciotti, Francesca, et al. “Challenges and Uncertainties in Hydrological Modeling of Remote Hindu Kush–Karakoram–Himalayan (HKH) Basins: Suggestions for Calibration Strategies.” Mountain Research and Development, vol. 32, no. 1, International Mountain Society, 2012, pp. 39–50, doi:10.1659/mrd-journal-d-11-00092.1.' short: F. Pellicciotti, C. Buergi, W.W. Immerzeel, M. Konz, A.B. Shrestha, Mountain Research and Development 32 (2012) 39–50. date_created: 2023-02-20T08:17:47Z date_published: 2012-02-01T00:00:00Z date_updated: 2023-02-21T09:31:54Z day: '01' doi: 10.1659/mrd-journal-d-11-00092.1 extern: '1' intvolume: ' 32' issue: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1659/MRD-JOURNAL-D-11-00092.1 month: '02' oa: 1 oa_version: Published Version page: 39-50 publication: Mountain Research and Development publication_identifier: eissn: - 1994-7151 issn: - 0276-4741 publication_status: published publisher: International Mountain Society quality_controlled: '1' scopus_import: '1' status: public title: 'Challenges and uncertainties in hydrological modeling of remote Hindu Kush–Karakoram–Himalayan (HKH) basins: Suggestions for calibration strategies' type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 32 year: '2012' ... --- _id: '12647' abstract: - lang: eng text: Accurate quantification of the spatial distribution of precipitation in mountain regions is crucial for assessments of water resources and for the understanding of high-altitude hydrology, yet it is one of the largest unknowns due to the lack of high-altitude observations. The Hunza basin in Pakistan contains very large glacier systems, which, given the melt, cannot persist unless precipitation (snow input) is much higher than what is observed at the meteorological stations, mostly located in mountain valleys. Several studies, therefore, suggest strong positive vertical precipitation lapse rates; in the present study, we quantify this lapse rate by using glaciers as a proxy. We assume a neutral mass balance for the glaciers for the period from 2001 to 2003, and we inversely model the precipitation lapse by balancing the total accumulation in the catchment area and the ablation over the glacier area for the 50 largest glacier systems in the Hunza basin in the Karakoram. Our results reveal a vertical precipitation lapse rate that equals 0.21 ± 0.12% m−1, with a maximum precipitation at an elevation of 5500 masl. We showed that the total annual basin precipitation (828 mm) is 260% higher than what is estimated based on interpolated observations (319 mm); this has major consequences for hydrological modeling and water resource assessments in general. Our results were validated by using previously published studies on individual glaciers as well as the water balance of the Hunza basin. The approach is more widely applicable in mountain ranges where precipitation measurements at high altitude are lacking. article_processing_charge: No article_type: original author: - first_name: Walter Willem full_name: Immerzeel, Walter Willem last_name: Immerzeel - first_name: Francesca full_name: Pellicciotti, Francesca id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70 last_name: Pellicciotti - first_name: Arun B. full_name: Shrestha, Arun B. last_name: Shrestha citation: ama: Immerzeel WW, Pellicciotti F, Shrestha AB. Glaciers as a proxy to quantify the spatial distribution of precipitation in the Hunza basin. Mountain Research and Development. 2012;32(1):30-38. doi:10.1659/mrd-journal-d-11-00097.1 apa: Immerzeel, W. W., Pellicciotti, F., & Shrestha, A. B. (2012). Glaciers as a proxy to quantify the spatial distribution of precipitation in the Hunza basin. Mountain Research and Development. International Mountain Society. https://doi.org/10.1659/mrd-journal-d-11-00097.1 chicago: Immerzeel, Walter Willem, Francesca Pellicciotti, and Arun B. Shrestha. “Glaciers as a Proxy to Quantify the Spatial Distribution of Precipitation in the Hunza Basin.” Mountain Research and Development. International Mountain Society, 2012. https://doi.org/10.1659/mrd-journal-d-11-00097.1. ieee: W. W. Immerzeel, F. Pellicciotti, and A. B. Shrestha, “Glaciers as a proxy to quantify the spatial distribution of precipitation in the Hunza basin,” Mountain Research and Development, vol. 32, no. 1. International Mountain Society, pp. 30–38, 2012. ista: Immerzeel WW, Pellicciotti F, Shrestha AB. 2012. Glaciers as a proxy to quantify the spatial distribution of precipitation in the Hunza basin. Mountain Research and Development. 32(1), 30–38. mla: Immerzeel, Walter Willem, et al. “Glaciers as a Proxy to Quantify the Spatial Distribution of Precipitation in the Hunza Basin.” Mountain Research and Development, vol. 32, no. 1, International Mountain Society, 2012, pp. 30–38, doi:10.1659/mrd-journal-d-11-00097.1. short: W.W. Immerzeel, F. Pellicciotti, A.B. Shrestha, Mountain Research and Development 32 (2012) 30–38. date_created: 2023-02-20T08:17:52Z date_published: 2012-02-01T00:00:00Z date_updated: 2023-02-21T08:56:29Z day: '01' doi: 10.1659/mrd-journal-d-11-00097.1 extern: '1' intvolume: ' 32' issue: '1' keyword: - General Environmental Science - Development - Environmental Chemistry language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1659/MRD-JOURNAL-D-11-00097.1 month: '02' oa: 1 oa_version: Published Version page: 30-38 publication: Mountain Research and Development publication_identifier: eissn: - 1994-7151 issn: - 0276-4741 publication_status: published publisher: International Mountain Society quality_controlled: '1' scopus_import: '1' status: public title: Glaciers as a proxy to quantify the spatial distribution of precipitation in the Hunza basin type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 32 year: '2012' ... --- _id: '12648' abstract: - lang: eng text: Distributed glacier melt models generally assume that the glacier surface consists of bare exposed ice and snow. In reality, many glaciers are wholly or partially covered in layers of debris that tend to suppress ablation rates. In this paper, an existing physically based point model for the ablation of debris-covered ice is incorporated in a distributed melt model and applied to Haut Glacier d'Arolla, Switzerland, which has three large patches of debris cover on its surface. The model is based on a 10 m resolution digital elevation model (DEM) of the area; each glacier pixel in the DEM is defined as either bare or debris-covered ice, and may be covered in snow that must be melted off before ice ablation is assumed to occur. Each debris-covered pixel is assigned a debris thickness value using probability distributions based on over 1000 manual thickness measurements. Locally observed meteorological data are used to run energy balance calculations in every pixel, using an approach suitable for snow, bare ice or debris-covered ice as appropriate. The use of the debris model significantly reduces the total ablation in the debris-covered areas, however the precise reduction is sensitive to the temperature extrapolation used in the model distribution because air near the debris surface tends to be slightly warmer than over bare ice. Overall results suggest that the debris patches, which cover 10% of the glacierized area, reduce total runoff from the glacierized part of the basin by up to 7%. article_number: D18105 article_processing_charge: No article_type: original author: - first_name: T. D. full_name: Reid, T. D. last_name: Reid - first_name: M. full_name: Carenzo, M. last_name: Carenzo - first_name: Francesca full_name: Pellicciotti, Francesca id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70 last_name: Pellicciotti - first_name: B. W. full_name: Brock, B. W. last_name: Brock citation: ama: 'Reid TD, Carenzo M, Pellicciotti F, Brock BW. Including debris cover effects in a distributed model of glacier ablation. Journal of Geophysical Research: Atmospheres. 2012;117(D18). doi:10.1029/2012jd017795' apa: 'Reid, T. D., Carenzo, M., Pellicciotti, F., & Brock, B. W. (2012). Including debris cover effects in a distributed model of glacier ablation. Journal of Geophysical Research: Atmospheres. American Geophysical Union. https://doi.org/10.1029/2012jd017795' chicago: 'Reid, T. D., M. Carenzo, Francesca Pellicciotti, and B. W. Brock. “Including Debris Cover Effects in a Distributed Model of Glacier Ablation.” Journal of Geophysical Research: Atmospheres. American Geophysical Union, 2012. https://doi.org/10.1029/2012jd017795.' ieee: 'T. D. Reid, M. Carenzo, F. Pellicciotti, and B. W. Brock, “Including debris cover effects in a distributed model of glacier ablation,” Journal of Geophysical Research: Atmospheres, vol. 117, no. D18. American Geophysical Union, 2012.' ista: 'Reid TD, Carenzo M, Pellicciotti F, Brock BW. 2012. Including debris cover effects in a distributed model of glacier ablation. Journal of Geophysical Research: Atmospheres. 117(D18), D18105.' mla: 'Reid, T. D., et al. “Including Debris Cover Effects in a Distributed Model of Glacier Ablation.” Journal of Geophysical Research: Atmospheres, vol. 117, no. D18, D18105, American Geophysical Union, 2012, doi:10.1029/2012jd017795.' short: 'T.D. Reid, M. Carenzo, F. Pellicciotti, B.W. Brock, Journal of Geophysical Research: Atmospheres 117 (2012).' date_created: 2023-02-20T08:17:57Z date_published: 2012-09-27T00:00:00Z date_updated: 2023-02-20T10:57:31Z day: '27' doi: 10.1029/2012jd017795 extern: '1' intvolume: ' 117' issue: D18 keyword: - Paleontology - Space and Planetary Science - Earth and Planetary Sciences (miscellaneous) - Atmospheric Science - Earth-Surface Processes - Geochemistry and Petrology - Soil Science - Water Science and Technology - Ecology - Aquatic Science - Forestry - Oceanography - Geophysics language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1029/2012JD017795 month: '09' oa: 1 oa_version: Published Version publication: 'Journal of Geophysical Research: Atmospheres' publication_identifier: issn: - 0148-0227 publication_status: published publisher: American Geophysical Union quality_controlled: '1' scopus_import: '1' status: public title: Including debris cover effects in a distributed model of glacier ablation type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 117 year: '2012' ... --- _id: '1384' abstract: - lang: eng text: 'Software model checking, as an undecidable problem, has three possible outcomes: (1) the program satisfies the specification, (2) the program does not satisfy the specification, and (3) the model checker fails. The third outcome usually manifests itself in a space-out, time-out, or one component of the verification tool giving up; in all of these failing cases, significant computation is performed by the verification tool before the failure, but no result is reported. We propose to reformulate the model-checking problem as follows, in order to have the verification tool report a summary of the performed work even in case of failure: given a program and a specification, the model checker returns a condition Ψ - usually a state predicate - such that the program satisfies the specification under the condition Ψ - that is, as long as the program does not leave the states in which Ψ is satisfied. In our experiments, we investigated as one major application of conditional model checking the sequential combination of model checkers with information passing. We give the condition that one model checker produces, as input to a second conditional model checker, such that the verification problem for the second is restricted to the part of the state space that is not covered by the condition, i.e., the second model checker works on the problems that the first model checker could not solve. Our experiments demonstrate that repeated application of conditional model checkers, passing information from one model checker to the next, can significantly improve the verification results and performance, i.e., we can now verify programs that we could not verify before.' acknowledgement: This research was supported by the Canadian NSERC grant RGPIN 341819-07, the ERC Advanced Grant QUAREM, and the Austrian Science Fund NFN RiSE. article_number: '57' author: - first_name: Dirk full_name: Beyer, Dirk last_name: Beyer - first_name: Thomas A full_name: Henzinger, Thomas A id: 40876CD8-F248-11E8-B48F-1D18A9856A87 last_name: Henzinger orcid: 0000−0002−2985−7724 - first_name: Mehmet full_name: Keremoglu, Mehmet last_name: Keremoglu - first_name: Philipp full_name: Wendler, Philipp last_name: Wendler citation: ama: 'Beyer D, Henzinger TA, Keremoglu M, Wendler P. Conditional model checking: A technique to pass information between verifiers. In: Proceedings of the ACM SIGSOFT 20th International Symposium on the Foundations of Software Engineering. ACM; 2012. doi:10.1145/2393596.2393664' apa: 'Beyer, D., Henzinger, T. A., Keremoglu, M., & Wendler, P. (2012). Conditional model checking: A technique to pass information between verifiers. In Proceedings of the ACM SIGSOFT 20th International Symposium on the Foundations of Software Engineering. Cary, NC, USA: ACM. https://doi.org/10.1145/2393596.2393664' chicago: 'Beyer, Dirk, Thomas A Henzinger, Mehmet Keremoglu, and Philipp Wendler. “Conditional Model Checking: A Technique to Pass Information between Verifiers.” In Proceedings of the ACM SIGSOFT 20th International Symposium on the Foundations of Software Engineering. ACM, 2012. https://doi.org/10.1145/2393596.2393664.' ieee: 'D. Beyer, T. A. Henzinger, M. Keremoglu, and P. Wendler, “Conditional model checking: A technique to pass information between verifiers,” in Proceedings of the ACM SIGSOFT 20th International Symposium on the Foundations of Software Engineering, Cary, NC, USA, 2012.' ista: 'Beyer D, Henzinger TA, Keremoglu M, Wendler P. 2012. Conditional model checking: A technique to pass information between verifiers. Proceedings of the ACM SIGSOFT 20th International Symposium on the Foundations of Software Engineering. FSE: Foundations of Software Engineering, 57.' mla: 'Beyer, Dirk, et al. “Conditional Model Checking: A Technique to Pass Information between Verifiers.” Proceedings of the ACM SIGSOFT 20th International Symposium on the Foundations of Software Engineering, 57, ACM, 2012, doi:10.1145/2393596.2393664.' short: D. Beyer, T.A. Henzinger, M. Keremoglu, P. Wendler, in:, Proceedings of the ACM SIGSOFT 20th International Symposium on the Foundations of Software Engineering, ACM, 2012. conference: end_date: 2012-11-16 location: Cary, NC, USA name: 'FSE: Foundations of Software Engineering' start_date: 2012-11-11 date_created: 2018-12-11T11:51:42Z date_published: 2012-11-01T00:00:00Z date_updated: 2021-01-12T06:50:18Z day: '01' department: - _id: ToHe doi: 10.1145/2393596.2393664 ec_funded: 1 language: - iso: eng main_file_link: - open_access: '1' url: http://arxiv.org/abs/1109.6926 month: '11' oa: 1 oa_version: Preprint project: - _id: 25EE3708-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '267989' name: Quantitative Reactive Modeling - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering publication: Proceedings of the ACM SIGSOFT 20th International Symposium on the Foundations of Software Engineering publication_status: published publisher: ACM publist_id: '5826' quality_controlled: '1' scopus_import: 1 status: public title: 'Conditional model checking: A technique to pass information between verifiers' type: conference user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 year: '2012' ... --- _id: '1472' abstract: - lang: eng text: For G = GL 2, PGL 2, SL 2 we prove that the perverse filtration associated with the Hitchin map on the rational cohomology of the moduli space of twisted G-Higgs bundles on a compact Riemann surface C agrees with the weight filtration on the rational cohomology of the twisted G character variety of C when the cohomologies are identified via non-Abelian Hodge theory. The proof is accomplished by means of a study of the topology of the Hitchin map over the locus of integral spectral curves. acknowledgement: Mark Andrea A. de Cataldo was partially supported by N.S.A. and N.S.F. Tamás Hausel was supported by a Royal Society University Research Fellowship. Luca Migliorini was partially supported by PRIN 2007 project "Spazi di moduli e teoria di Lie" author: - first_name: Mark full_name: De Cataldo, Mark A last_name: De Cataldo - first_name: Tamas full_name: Tamas Hausel id: 4A0666D8-F248-11E8-B48F-1D18A9856A87 last_name: Hausel - first_name: Luca full_name: Migliorini, Luca last_name: Migliorini citation: ama: 'De Cataldo M, Hausel T, Migliorini L. Topology of hitchin systems and Hodge theory of character varieties: The case A 1. Annals of Mathematics. 2012;175(3):1329-1407. doi:10.4007/annals.2012.175.3.7' apa: 'De Cataldo, M., Hausel, T., & Migliorini, L. (2012). Topology of hitchin systems and Hodge theory of character varieties: The case A 1. Annals of Mathematics. Princeton University Press. https://doi.org/10.4007/annals.2012.175.3.7' chicago: 'De Cataldo, Mark, Tamás Hausel, and Luca Migliorini. “Topology of Hitchin Systems and Hodge Theory of Character Varieties: The Case A 1.” Annals of Mathematics. Princeton University Press, 2012. https://doi.org/10.4007/annals.2012.175.3.7.' ieee: 'M. De Cataldo, T. Hausel, and L. Migliorini, “Topology of hitchin systems and Hodge theory of character varieties: The case A 1,” Annals of Mathematics, vol. 175, no. 3. Princeton University Press, pp. 1329–1407, 2012.' ista: 'De Cataldo M, Hausel T, Migliorini L. 2012. Topology of hitchin systems and Hodge theory of character varieties: The case A 1. Annals of Mathematics. 175(3), 1329–1407.' mla: 'De Cataldo, Mark, et al. “Topology of Hitchin Systems and Hodge Theory of Character Varieties: The Case A 1.” Annals of Mathematics, vol. 175, no. 3, Princeton University Press, 2012, pp. 1329–407, doi:10.4007/annals.2012.175.3.7.' short: M. De Cataldo, T. Hausel, L. Migliorini, Annals of Mathematics 175 (2012) 1329–1407. date_created: 2018-12-11T11:52:13Z date_published: 2012-05-01T00:00:00Z date_updated: 2021-01-12T06:50:59Z day: '01' doi: 10.4007/annals.2012.175.3.7 extern: 1 intvolume: ' 175' issue: '3' main_file_link: - open_access: '1' url: http://arxiv.org/abs/1004.1420 month: '05' oa: 1 page: 1329 - 1407 publication: Annals of Mathematics publication_status: published publisher: Princeton University Press publist_id: '5727' quality_controlled: 0 status: public title: 'Topology of hitchin systems and Hodge theory of character varieties: The case A 1' type: journal_article volume: 175 year: '2012' ... --- _id: '1471' abstract: - lang: eng text: 'Given a possibly reducible and non-reduced spectral cover π: X → C over a smooth projective complex curve C we determine the group of connected components of the Prym variety Prym(X/C). As an immediate application we show that the finite group of n-torsion points of the Jacobian of C acts trivially on the cohomology of the twisted SL n-Higgs moduli space up to the degree which is predicted by topological mirror symmetry. In particular this yields a new proof of a result of Harder-Narasimhan, showing that this finite group acts trivially on the cohomology of the twisted SL n stable bundle moduli space.' author: - first_name: Tamas full_name: Tamas Hausel id: 4A0666D8-F248-11E8-B48F-1D18A9856A87 last_name: Hausel - first_name: Christian full_name: Pauly, Christian last_name: Pauly citation: ama: Hausel T, Pauly C. Prym varieties of spectral covers. Geometry and Topology. 2012;16(3):1609-1638. doi:10.2140/gt.2012.16.1609 apa: Hausel, T., & Pauly, C. (2012). Prym varieties of spectral covers. Geometry and Topology. University of Warwick. https://doi.org/10.2140/gt.2012.16.1609 chicago: Hausel, Tamás, and Christian Pauly. “Prym Varieties of Spectral Covers.” Geometry and Topology. University of Warwick, 2012. https://doi.org/10.2140/gt.2012.16.1609. ieee: T. Hausel and C. Pauly, “Prym varieties of spectral covers,” Geometry and Topology, vol. 16, no. 3. University of Warwick, pp. 1609–1638, 2012. ista: Hausel T, Pauly C. 2012. Prym varieties of spectral covers. Geometry and Topology. 16(3), 1609–1638. mla: Hausel, Tamás, and Christian Pauly. “Prym Varieties of Spectral Covers.” Geometry and Topology, vol. 16, no. 3, University of Warwick, 2012, pp. 1609–38, doi:10.2140/gt.2012.16.1609. short: T. Hausel, C. Pauly, Geometry and Topology 16 (2012) 1609–1638. date_created: 2018-12-11T11:52:13Z date_published: 2012-08-01T00:00:00Z date_updated: 2021-01-12T06:50:58Z day: '01' doi: 10.2140/gt.2012.16.1609 extern: 1 intvolume: ' 16' issue: '3' main_file_link: - open_access: '1' url: http://arxiv.org/abs/1012.4748 month: '08' oa: 1 page: 1609 - 1638 publication: Geometry and Topology publication_status: published publisher: University of Warwick publist_id: '5726' quality_controlled: 0 status: public title: Prym varieties of spectral covers type: journal_article volume: 16 year: '2012' ... --- _id: '171' abstract: - lang: eng text: For given non-zero integers a, b, q we investigate the density of solutions (x, y) ∈ ℤ2 to the binary cubic congruence ax2 + by3 ≡ 0 mod q, and use it to establish the Manin conjecture for a singular del Pezzo surface of degree 2 defined over ℚ. author: - first_name: Timothy D full_name: Timothy Browning id: 35827D50-F248-11E8-B48F-1D18A9856A87 last_name: Browning orcid: 0000-0002-8314-0177 - first_name: Stephan full_name: Baier, Stephan last_name: Baier citation: ama: Browning TD, Baier S. Inhomogeneous cubic congruences and rational points on del Pezzo surfaces. Journal fur die Reine und Angewandte Mathematik. 2012;2013(680):1-65. doi:https://doi.org/10.1515/crelle.2012.039 apa: Browning, T. D., & Baier, S. (2012). Inhomogeneous cubic congruences and rational points on del Pezzo surfaces. Journal Fur Die Reine Und Angewandte Mathematik. Walter de Gruyter. https://doi.org/10.1515/crelle.2012.039 chicago: Browning, Timothy D, and Stephan Baier. “Inhomogeneous Cubic Congruences and Rational Points on Del Pezzo Surfaces.” Journal Fur Die Reine Und Angewandte Mathematik. Walter de Gruyter, 2012. https://doi.org/10.1515/crelle.2012.039. ieee: T. D. Browning and S. Baier, “Inhomogeneous cubic congruences and rational points on del Pezzo surfaces,” Journal fur die Reine und Angewandte Mathematik, vol. 2013, no. 680. Walter de Gruyter, pp. 1–65, 2012. ista: Browning TD, Baier S. 2012. Inhomogeneous cubic congruences and rational points on del Pezzo surfaces. Journal fur die Reine und Angewandte Mathematik. 2013(680), 1–65. mla: Browning, Timothy D., and Stephan Baier. “Inhomogeneous Cubic Congruences and Rational Points on Del Pezzo Surfaces.” Journal Fur Die Reine Und Angewandte Mathematik, vol. 2013, no. 680, Walter de Gruyter, 2012, pp. 1–65, doi:https://doi.org/10.1515/crelle.2012.039. short: T.D. Browning, S. Baier, Journal Fur Die Reine Und Angewandte Mathematik 2013 (2012) 1–65. date_created: 2018-12-11T11:45:00Z date_published: 2012-04-03T00:00:00Z date_updated: 2021-01-12T06:52:41Z day: '03' doi: https://doi.org/10.1515/crelle.2012.039 extern: 1 intvolume: ' 2013' issue: '680' main_file_link: - open_access: '1' url: https://arxiv.org/abs/1011.3434 month: '04' oa: 1 page: 1 - 65 publication: Journal fur die Reine und Angewandte Mathematik publication_status: published publisher: Walter de Gruyter publist_id: '7750' quality_controlled: 0 status: public title: Inhomogeneous cubic congruences and rational points on del Pezzo surfaces type: journal_article volume: 2013 year: '2012' ... --- _id: '1725' abstract: - lang: eng text: The spatial organization of cell fates during development involves the interpretation of morphogen gradients by cellular signaling cascades and transcriptional networks. Recent studies use biophysical models, genetics, and quantitative imaging to unravel how tissue-level morphogen behavior arises from subcellular events. Moreover, data from several systems show that morphogen gradients, downstream signaling, and the activity of cell-intrinsic transcriptional networks change dynamically during pattern formation. Studies from Drosophila and now also vertebrates suggest that transcriptional network dynamics are central to the generation of gene expression patterns. Together, this leads to the view that pattern formation is an emergent behavior that results from the coordination of events occurring across molecular, cellular, and tissue scales. The development of novel approaches to study this complex process remains a challenge. acknowledgement: 'Funding provided by the Medical Research Council (UK). ' author: - first_name: Anna full_name: Anna Kicheva id: 3959A2A0-F248-11E8-B48F-1D18A9856A87 last_name: Kicheva orcid: 0000-0003-4509-4998 - first_name: Michael full_name: Cohen, Michael H last_name: Cohen - first_name: James full_name: Briscoe, James last_name: Briscoe citation: ama: 'Kicheva A, Cohen M, Briscoe J. Developmental pattern formation: Insights from physics and biology. Science. 2012;338(6104):210-212. doi:10.1126/science.1225182' apa: 'Kicheva, A., Cohen, M., & Briscoe, J. (2012). Developmental pattern formation: Insights from physics and biology. Science. American Association for the Advancement of Science. https://doi.org/10.1126/science.1225182' chicago: 'Kicheva, Anna, Michael Cohen, and James Briscoe. “Developmental Pattern Formation: Insights from Physics and Biology.” Science. American Association for the Advancement of Science, 2012. https://doi.org/10.1126/science.1225182.' ieee: 'A. Kicheva, M. Cohen, and J. Briscoe, “Developmental pattern formation: Insights from physics and biology,” Science, vol. 338, no. 6104. American Association for the Advancement of Science, pp. 210–212, 2012.' ista: 'Kicheva A, Cohen M, Briscoe J. 2012. Developmental pattern formation: Insights from physics and biology. Science. 338(6104), 210–212.' mla: 'Kicheva, Anna, et al. “Developmental Pattern Formation: Insights from Physics and Biology.” Science, vol. 338, no. 6104, American Association for the Advancement of Science, 2012, pp. 210–12, doi:10.1126/science.1225182.' short: A. Kicheva, M. Cohen, J. Briscoe, Science 338 (2012) 210–212. date_created: 2018-12-11T11:53:40Z date_published: 2012-10-12T00:00:00Z date_updated: 2021-01-12T06:52:47Z day: '12' doi: 10.1126/science.1225182 extern: 1 intvolume: ' 338' issue: '6104' month: '10' page: 210 - 212 publication: Science publication_status: published publisher: American Association for the Advancement of Science publist_id: '5404' quality_controlled: 0 status: public title: 'Developmental pattern formation: Insights from physics and biology' type: journal_article volume: 338 year: '2012' ... --- _id: '1757' abstract: - lang: eng text: Self-assembled Ge wires with a height of only 3 unit cells and a length of up to 2 micrometers were grown on Si(001) by means of a catalyst-free method based on molecular beam epitaxy. The wires grow horizontally along either the [100] or the [010] direction. On atomically flat surfaces, they exhibit a highly uniform, triangular cross section. A simple thermodynamic model accounts for the existence of a preferential base width for longitudinal expansion, in quantitative agreement with the experimental findings. Despite the absence of intentional doping, the first transistor-type devices made from single wires show low-resistive electrical contacts and single-hole transport at sub-Kelvin temperatures. In view of their exceptionally small and self-defined cross section, these Ge wires hold promise for the realization of hole systems with exotic properties and provide a new development route for silicon-based nanoelectronics. acknowledgement: We acknowledge the financial support by the DFG SPP1386, P. Chen and D. J. Thurmer for MBE assistance, R. Wacquez for providing the ultrathin SOI wafers, and G. Bauer, Y. Hu, X. Jehl, S. Kiravittaya, C. Klöffel, E. J. H. Lee, F. Liu, D. Loss, and S. Mahapatra for helpful discussions. G. K. acknowledges support from the European commission via a Marie Curie Carrer Integration Grant. S. D. F. acknowledges support from the European Research Council through the starting grant program author: - first_name: Jianjun full_name: Zhang, Jianjun last_name: Zhang - first_name: Georgios full_name: Georgios Katsaros id: 38DB5788-F248-11E8-B48F-1D18A9856A87 last_name: Katsaros - first_name: Francesco full_name: Montalenti, Francesco last_name: Montalenti - first_name: Daniele full_name: Scopece, Daniele last_name: Scopece - first_name: Roman full_name: Rezaev, Roman O last_name: Rezaev - first_name: Christine full_name: Mickel, Christine H last_name: Mickel - first_name: Bernd full_name: Rellinghaus, Bernd last_name: Rellinghaus - first_name: Leo full_name: Miglio, Leo P last_name: Miglio - first_name: Silvano full_name: De Franceschi, Silvano last_name: De Franceschi - first_name: Armando full_name: Rastelli, Armando last_name: Rastelli - first_name: Oliver full_name: Schmidt, Oliver G last_name: Schmidt citation: ama: Zhang J, Katsaros G, Montalenti F, et al. Monolithic growth of ultrathin Ge nanowires on Si(001) . Physical Review Letters. 2012;109(8). doi:10.1103/PhysRevLett.109.085502 apa: Zhang, J., Katsaros, G., Montalenti, F., Scopece, D., Rezaev, R., Mickel, C., … Schmidt, O. (2012). Monolithic growth of ultrathin Ge nanowires on Si(001) . Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.109.085502 chicago: Zhang, Jianjun, Georgios Katsaros, Francesco Montalenti, Daniele Scopece, Roman Rezaev, Christine Mickel, Bernd Rellinghaus, et al. “Monolithic Growth of Ultrathin Ge Nanowires on Si(001) .” Physical Review Letters. American Physical Society, 2012. https://doi.org/10.1103/PhysRevLett.109.085502. ieee: J. Zhang et al., “Monolithic growth of ultrathin Ge nanowires on Si(001) ,” Physical Review Letters, vol. 109, no. 8. American Physical Society, 2012. ista: Zhang J, Katsaros G, Montalenti F, Scopece D, Rezaev R, Mickel C, Rellinghaus B, Miglio L, De Franceschi S, Rastelli A, Schmidt O. 2012. Monolithic growth of ultrathin Ge nanowires on Si(001) . Physical Review Letters. 109(8). mla: Zhang, Jianjun, et al. “Monolithic Growth of Ultrathin Ge Nanowires on Si(001) .” Physical Review Letters, vol. 109, no. 8, American Physical Society, 2012, doi:10.1103/PhysRevLett.109.085502. short: J. Zhang, G. Katsaros, F. Montalenti, D. Scopece, R. Rezaev, C. Mickel, B. Rellinghaus, L. Miglio, S. De Franceschi, A. Rastelli, O. Schmidt, Physical Review Letters 109 (2012). date_created: 2018-12-11T11:53:51Z date_published: 2012-08-23T00:00:00Z date_updated: 2021-01-12T06:53:00Z day: '23' doi: 10.1103/PhysRevLett.109.085502 extern: 1 intvolume: ' 109' issue: '8' main_file_link: - open_access: '1' url: http://arxiv.org/abs/1208.0666 month: '08' oa: 1 publication: Physical Review Letters publication_status: published publisher: American Physical Society publist_id: '5367' quality_controlled: 0 status: public title: 'Monolithic growth of ultrathin Ge nanowires on Si(001) ' type: journal_article volume: 109 year: '2012' ... --- _id: '1758' abstract: - lang: eng text: We studied the low-energy states of spin-1/2 quantum dots defined in InAs/InP nanowires and coupled to aluminum superconducting leads. By varying the superconducting gap Δ with a magnetic field B we investigated the transition from strong coupling Δ≪T K to weak-coupling Δ≫T K, where T K is the Kondo temperature. Below the critical field, we observe a persisting zero-bias Kondo resonance that vanishes only for low B or higher temperatures, leaving the room to more robust subgap structures at bias voltages between Δ and 2Δ. For strong and approximately symmetric tunnel couplings, a Josephson supercurrent is observed in addition to the Kondo peak. We ascribe the coexistence of a Kondo resonance and a superconducting gap to a significant density of intragap quasiparticle states, and the finite-bias subgap structures to tunneling through Shiba states. Our results, supported by numerical calculations, own relevance also in relation to tunnel-spectroscopy experiments aiming at the observation of Majorana fermions in hybrid nanostructures. acknowledgement: This work was supported by the EU Marie Curie program and by the Agence Nationale de la Recherche. R. A. acknowledges support from the Spanish Ministry of Science and Innovation through Grant No. FIS2009-08744 author: - first_name: Eduardo full_name: Lee, Eduardo J last_name: Lee - first_name: Xiaocheng full_name: Jiang, Xiaocheng last_name: Jiang - first_name: Ramón full_name: Aguado, Ramón last_name: Aguado - first_name: Georgios full_name: Georgios Katsaros id: 38DB5788-F248-11E8-B48F-1D18A9856A87 last_name: Katsaros - first_name: Charles full_name: Lieber, Charles M last_name: Lieber - first_name: Silvano full_name: De Franceschi, Silvano last_name: De Franceschi citation: ama: Lee E, Jiang X, Aguado R, Katsaros G, Lieber C, De Franceschi S. Zero-bias anomaly in a nanowire quantum dot coupled to superconductors. Physical Review Letters. 2012;109(18). doi:10.1103/PhysRevLett.109.186802 apa: Lee, E., Jiang, X., Aguado, R., Katsaros, G., Lieber, C., & De Franceschi, S. (2012). Zero-bias anomaly in a nanowire quantum dot coupled to superconductors. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.109.186802 chicago: Lee, Eduardo, Xiaocheng Jiang, Ramón Aguado, Georgios Katsaros, Charles Lieber, and Silvano De Franceschi. “Zero-Bias Anomaly in a Nanowire Quantum Dot Coupled to Superconductors.” Physical Review Letters. American Physical Society, 2012. https://doi.org/10.1103/PhysRevLett.109.186802. ieee: E. Lee, X. Jiang, R. Aguado, G. Katsaros, C. Lieber, and S. De Franceschi, “Zero-bias anomaly in a nanowire quantum dot coupled to superconductors,” Physical Review Letters, vol. 109, no. 18. American Physical Society, 2012. ista: Lee E, Jiang X, Aguado R, Katsaros G, Lieber C, De Franceschi S. 2012. Zero-bias anomaly in a nanowire quantum dot coupled to superconductors. Physical Review Letters. 109(18). mla: Lee, Eduardo, et al. “Zero-Bias Anomaly in a Nanowire Quantum Dot Coupled to Superconductors.” Physical Review Letters, vol. 109, no. 18, American Physical Society, 2012, doi:10.1103/PhysRevLett.109.186802. short: E. Lee, X. Jiang, R. Aguado, G. Katsaros, C. Lieber, S. De Franceschi, Physical Review Letters 109 (2012). date_created: 2018-12-11T11:53:51Z date_published: 2012-10-31T00:00:00Z date_updated: 2021-01-12T06:53:01Z day: '31' doi: 10.1103/PhysRevLett.109.186802 extern: 1 intvolume: ' 109' issue: '18' main_file_link: - open_access: '1' url: http://arxiv.org/abs/1207.1259 month: '10' oa: 1 publication: Physical Review Letters publication_status: published publisher: American Physical Society publist_id: '5366' quality_controlled: 0 status: public title: Zero-bias anomaly in a nanowire quantum dot coupled to superconductors type: journal_article volume: 109 year: '2012' ... --- _id: '1756' abstract: - lang: eng text: We report on the electronic transport properties of multiple-gate devices fabricated from undoped silicon nanowires. Understanding and control of the relevant transport mechanisms was achieved by means of local electrostatic gating and temperature-dependent measurements. The roles of the source/drain contacts and of the silicon channel could be independently evaluated and tuned. Wrap gates surrounding the silicide-silicon contact interfaces were proved to be effective in inducing a full suppression of the contact Schottky barriers, thereby enabling carrier injection down to liquid helium temperature. By independently tuning the effective Schottky barrier heights, a variety of reconfigurable device functionalities could be obtained. In particular, the same nanowire device could be configured to work as a Schottky barrier transistor, a Schottky diode, or a p-n diode with tunable polarities. This versatility was eventually exploited to realize a NAND logic gate with gain well above one. acknowledgement: This work was supported by the Agence Nationale de la Recherche (ANR) through the ACCESS and COHESION projects and by the European Commission through the Chemtronics program MEST-CT-2005-020513 author: - first_name: Massimo full_name: Mongillo, Massimo last_name: Mongillo - first_name: Panayotis full_name: Spathis, Panayotis N last_name: Spathis - first_name: Georgios full_name: Georgios Katsaros id: 38DB5788-F248-11E8-B48F-1D18A9856A87 last_name: Katsaros - first_name: Pascal full_name: Gentile, Pascal last_name: Gentile - first_name: Silvano full_name: De Franceschi, Silvano last_name: De Franceschi citation: ama: Mongillo M, Spathis P, Katsaros G, Gentile P, De Franceschi S. Multifunctional devices and logic gates with undoped silicon nanowires. Nano Letters. 2012;12(6):3074-3079. doi:10.1021/nl300930m apa: Mongillo, M., Spathis, P., Katsaros, G., Gentile, P., & De Franceschi, S. (2012). Multifunctional devices and logic gates with undoped silicon nanowires. Nano Letters. American Chemical Society. https://doi.org/10.1021/nl300930m chicago: Mongillo, Massimo, Panayotis Spathis, Georgios Katsaros, Pascal Gentile, and Silvano De Franceschi. “Multifunctional Devices and Logic Gates with Undoped Silicon Nanowires.” Nano Letters. American Chemical Society, 2012. https://doi.org/10.1021/nl300930m. ieee: M. Mongillo, P. Spathis, G. Katsaros, P. Gentile, and S. De Franceschi, “Multifunctional devices and logic gates with undoped silicon nanowires,” Nano Letters, vol. 12, no. 6. American Chemical Society, pp. 3074–3079, 2012. ista: Mongillo M, Spathis P, Katsaros G, Gentile P, De Franceschi S. 2012. Multifunctional devices and logic gates with undoped silicon nanowires. Nano Letters. 12(6), 3074–3079. mla: Mongillo, Massimo, et al. “Multifunctional Devices and Logic Gates with Undoped Silicon Nanowires.” Nano Letters, vol. 12, no. 6, American Chemical Society, 2012, pp. 3074–79, doi:10.1021/nl300930m. short: M. Mongillo, P. Spathis, G. Katsaros, P. Gentile, S. De Franceschi, Nano Letters 12 (2012) 3074–3079. date_created: 2018-12-11T11:53:50Z date_published: 2012-06-13T00:00:00Z date_updated: 2021-01-12T06:53:00Z day: '13' doi: 10.1021/nl300930m extern: 1 intvolume: ' 12' issue: '6' main_file_link: - open_access: '1' url: http://arxiv.org/abs/1208.1465 month: '06' oa: 1 page: 3074 - 3079 publication: Nano Letters publication_status: published publisher: American Chemical Society publist_id: '5368' quality_controlled: 0 status: public title: Multifunctional devices and logic gates with undoped silicon nanowires type: journal_article volume: 12 year: '2012' ... --- _id: '1783' abstract: - lang: eng text: Nonlinearity and entanglement are two important properties by which physical systems can be identified as nonclassical. We study the dynamics of the resonant interaction of up to N=3 two-level systems and a single mode of the electromagnetic field sharing a single excitation dynamically. We observe coherent vacuum Rabi oscillations and their nonlinear √N speedup by tracking the populations of all qubits and the resonator in time. We use quantum state tomography to show explicitly that the dynamics generates maximally entangled states of the W class in a time limited only by the collective interaction rate. We use an entanglement witness and the 3-tangle to characterize the state whose fidelity F=78% is limited in our experiments by crosstalk arising during the simultaneous qubit manipulations which is absent in a sequential approach with F=91%. acknowledgement: This work was supported by the Swiss National Science Foundation (SNF) and the EU IP SOLID author: - first_name: Jonas full_name: Mlynek, Jonas A last_name: Mlynek - first_name: Abdufarrukh full_name: Abdumalikov, Abdufarrukh A last_name: Abdumalikov - first_name: Johannes M full_name: Johannes Fink id: 4B591CBA-F248-11E8-B48F-1D18A9856A87 last_name: Fink orcid: 0000-0001-8112-028X - first_name: L. full_name: Steffen, L. Kraig last_name: Steffen - first_name: Matthias full_name: Baur, Matthias P last_name: Baur - first_name: C full_name: Lang, C last_name: Lang - first_name: Arjan full_name: Van Loo, Arjan F last_name: Van Loo - first_name: Andreas full_name: Wallraff, Andreas last_name: Wallraff citation: ama: Mlynek J, Abdumalikov A, Fink JM, et al. Demonstrating W-type entanglement of Dicke states in resonant cavity quantum electrodynamics. Physical Review A - Atomic, Molecular, and Optical Physics. 2012;86(5). doi:10.1103/PhysRevA.86.053838 apa: Mlynek, J., Abdumalikov, A., Fink, J. M., Steffen, L., Baur, M., Lang, C., … Wallraff, A. (2012). Demonstrating W-type entanglement of Dicke states in resonant cavity quantum electrodynamics. Physical Review A - Atomic, Molecular, and Optical Physics. American Physical Society. https://doi.org/10.1103/PhysRevA.86.053838 chicago: Mlynek, Jonas, Abdufarrukh Abdumalikov, Johannes M Fink, L. Steffen, Matthias Baur, C Lang, Arjan Van Loo, and Andreas Wallraff. “Demonstrating W-Type Entanglement of Dicke States in Resonant Cavity Quantum Electrodynamics.” Physical Review A - Atomic, Molecular, and Optical Physics. American Physical Society, 2012. https://doi.org/10.1103/PhysRevA.86.053838. ieee: J. Mlynek et al., “Demonstrating W-type entanglement of Dicke states in resonant cavity quantum electrodynamics,” Physical Review A - Atomic, Molecular, and Optical Physics, vol. 86, no. 5. American Physical Society, 2012. ista: Mlynek J, Abdumalikov A, Fink JM, Steffen L, Baur M, Lang C, Van Loo A, Wallraff A. 2012. Demonstrating W-type entanglement of Dicke states in resonant cavity quantum electrodynamics. Physical Review A - Atomic, Molecular, and Optical Physics. 86(5). mla: Mlynek, Jonas, et al. “Demonstrating W-Type Entanglement of Dicke States in Resonant Cavity Quantum Electrodynamics.” Physical Review A - Atomic, Molecular, and Optical Physics, vol. 86, no. 5, American Physical Society, 2012, doi:10.1103/PhysRevA.86.053838. short: J. Mlynek, A. Abdumalikov, J.M. Fink, L. Steffen, M. Baur, C. Lang, A. Van Loo, A. Wallraff, Physical Review A - Atomic, Molecular, and Optical Physics 86 (2012). date_created: 2018-12-11T11:53:59Z date_published: 2012-11-30T00:00:00Z date_updated: 2021-01-12T06:53:10Z day: '30' doi: 10.1103/PhysRevA.86.053838 extern: 1 intvolume: ' 86' issue: '5' main_file_link: - open_access: '1' url: http://arxiv.org/abs/1202.5191 month: '11' oa: 1 publication: Physical Review A - Atomic, Molecular, and Optical Physics publication_status: published publisher: American Physical Society publist_id: '5332' quality_controlled: 0 status: public title: Demonstrating W-type entanglement of Dicke states in resonant cavity quantum electrodynamics type: journal_article volume: 86 year: '2012' ... --- _id: '1782' abstract: - lang: eng text: Steering a quantum harmonic oscillator state along cyclic trajectories leads to a path-dependent geometric phase. Here we describe its experimental observation in an electronic harmonic oscillator. We use a superconducting qubit as a nonlinear probe of the phase, which is otherwise unobservable due to the linearity of the oscillator. We show that the geometric phase is, for a variety of cyclic paths, proportional to the area enclosed in the quadrature plane. At the transition to the nonadiabatic regime, we study corrections to the phase and dephasing of the qubit caused by qubit-resonator entanglement. In particular, we identify parameters for which this dephasing mechanism is negligible even in the nonadiabatic regime. The demonstrated controllability makes our system a versatile tool to study geometric phases in open quantum systems and to investigate their potential for quantum information processing. acknowledgement: This work is supported by the EU project GEOMDISS, the Austrian Science Foundation (S. F.), and the Swiss National Science Foundation (SNSF) author: - first_name: M full_name: Pechal, M last_name: Pechal - first_name: Stefan full_name: Berger, Stefan T last_name: Berger - first_name: Abdufarrukh full_name: Abdumalikov, Abdufarrukh A last_name: Abdumalikov - first_name: Johannes M full_name: Johannes Fink id: 4B591CBA-F248-11E8-B48F-1D18A9856A87 last_name: Fink orcid: 0000-0001-8112-028X - first_name: Jonas full_name: Mlynek, Jonas A last_name: Mlynek - first_name: L. full_name: Steffen, L. Kraig last_name: Steffen - first_name: Andreas full_name: Wallraff, Andreas last_name: Wallraff - first_name: Stefan full_name: Filipp, Stefan last_name: Filipp citation: ama: Pechal M, Berger S, Abdumalikov A, et al. Geometric phase and nonadiabatic effects in an electronic harmonic oscillator. Physical Review Letters. 2012;108(17). doi:10.1103/PhysRevLett.108.170401 apa: Pechal, M., Berger, S., Abdumalikov, A., Fink, J. M., Mlynek, J., Steffen, L., … Filipp, S. (2012). Geometric phase and nonadiabatic effects in an electronic harmonic oscillator. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.108.170401 chicago: Pechal, M, Stefan Berger, Abdufarrukh Abdumalikov, Johannes M Fink, Jonas Mlynek, L. Steffen, Andreas Wallraff, and Stefan Filipp. “Geometric Phase and Nonadiabatic Effects in an Electronic Harmonic Oscillator.” Physical Review Letters. American Physical Society, 2012. https://doi.org/10.1103/PhysRevLett.108.170401. ieee: M. Pechal et al., “Geometric phase and nonadiabatic effects in an electronic harmonic oscillator,” Physical Review Letters, vol. 108, no. 17. American Physical Society, 2012. ista: Pechal M, Berger S, Abdumalikov A, Fink JM, Mlynek J, Steffen L, Wallraff A, Filipp S. 2012. Geometric phase and nonadiabatic effects in an electronic harmonic oscillator. Physical Review Letters. 108(17). mla: Pechal, M., et al. “Geometric Phase and Nonadiabatic Effects in an Electronic Harmonic Oscillator.” Physical Review Letters, vol. 108, no. 17, American Physical Society, 2012, doi:10.1103/PhysRevLett.108.170401. short: M. Pechal, S. Berger, A. Abdumalikov, J.M. Fink, J. Mlynek, L. Steffen, A. Wallraff, S. Filipp, Physical Review Letters 108 (2012). date_created: 2018-12-11T11:53:59Z date_published: 2012-04-23T00:00:00Z date_updated: 2021-01-12T06:53:10Z day: '23' doi: 10.1103/PhysRevLett.108.170401 extern: 1 intvolume: ' 108' issue: '17' main_file_link: - open_access: '1' url: http://arxiv.org/abs/1109.1157 month: '04' oa: 1 publication: Physical Review Letters publication_status: published publisher: American Physical Society publist_id: '5333' quality_controlled: 0 status: public title: Geometric phase and nonadiabatic effects in an electronic harmonic oscillator type: journal_article volume: 108 year: '2012' ... --- _id: '1784' abstract: - lang: eng text: A localized qubit entangled with a propagating quantum field is well suited to study nonlocal aspects of quantum mechanics and may also provide a channel to communicate between spatially separated nodes in a quantum network. Here, we report the on-demand generation and characterization of Bell-type entangled states between a superconducting qubit and propagating microwave fields composed of zero-, one-, and two-photon Fock states. Using low noise linear amplification and efficient data acquisition we extract all relevant correlations between the qubit and the photon states and demonstrate entanglement with high fidelity. acknowledgement: This work was supported by the European Research Council (ERC) through a Starting Grant and by ETHZ author: - first_name: Christopher full_name: Eichler, Christopher last_name: Eichler - first_name: C full_name: Lang, C last_name: Lang - first_name: Johannes M full_name: Johannes Fink id: 4B591CBA-F248-11E8-B48F-1D18A9856A87 last_name: Fink orcid: 0000-0001-8112-028X - first_name: J full_name: Govenius, J last_name: Govenius - first_name: Stefan full_name: Filipp, Stefan last_name: Filipp - first_name: Andreas full_name: Wallraff, Andreas last_name: Wallraff citation: ama: Eichler C, Lang C, Fink JM, Govenius J, Filipp S, Wallraff A. Observation of entanglement between itinerant microwave photons and a superconducting qubit. Physical Review Letters. 2012;109(24). doi:10.1103/PhysRevLett.109.240501 apa: Eichler, C., Lang, C., Fink, J. M., Govenius, J., Filipp, S., & Wallraff, A. (2012). Observation of entanglement between itinerant microwave photons and a superconducting qubit. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.109.240501 chicago: Eichler, Christopher, C Lang, Johannes M Fink, J Govenius, Stefan Filipp, and Andreas Wallraff. “Observation of Entanglement between Itinerant Microwave Photons and a Superconducting Qubit.” Physical Review Letters. American Physical Society, 2012. https://doi.org/10.1103/PhysRevLett.109.240501. ieee: C. Eichler, C. Lang, J. M. Fink, J. Govenius, S. Filipp, and A. Wallraff, “Observation of entanglement between itinerant microwave photons and a superconducting qubit,” Physical Review Letters, vol. 109, no. 24. American Physical Society, 2012. ista: Eichler C, Lang C, Fink JM, Govenius J, Filipp S, Wallraff A. 2012. Observation of entanglement between itinerant microwave photons and a superconducting qubit. Physical Review Letters. 109(24). mla: Eichler, Christopher, et al. “Observation of Entanglement between Itinerant Microwave Photons and a Superconducting Qubit.” Physical Review Letters, vol. 109, no. 24, American Physical Society, 2012, doi:10.1103/PhysRevLett.109.240501. short: C. Eichler, C. Lang, J.M. Fink, J. Govenius, S. Filipp, A. Wallraff, Physical Review Letters 109 (2012). date_created: 2018-12-11T11:53:59Z date_published: 2012-12-10T00:00:00Z date_updated: 2021-01-12T06:53:10Z day: '10' doi: 10.1103/PhysRevLett.109.240501 extern: 1 intvolume: ' 109' issue: '24' main_file_link: - open_access: '0' url: http://arxiv.org/abs/1209.0441 month: '12' publication: Physical Review Letters publication_status: published publisher: American Physical Society publist_id: '5330' quality_controlled: 0 status: public title: Observation of entanglement between itinerant microwave photons and a superconducting qubit type: journal_article volume: 109 year: '2012' ... --- _id: '1801' abstract: - lang: eng text: Brain circuits are assembled from a large variety of morphologically and functionally diverse cell types. It is not known how the intermingled cell types of an individual adult brain region differ in their expressed genomes. Here we describe an atlas of cell type transcriptomes in one brain region, the mouse retina. We found that each adult cell type expressed a specific set of genes, including a unique set of transcription factors, forming a 'barcode' for cell identity. Cell type transcriptomes carried enough information to categorize cells into morphological classes and types. Several genes that were specifically expressed in particular retinal circuit elements, such as inhibitory neuron types, are associated with eye diseases. The resource described here allows gene expression to be compared across adult retinal cell types, experimenting with specific transcription factors to differentiate stem or somatic cells to retinal cell types, and predicting cellular targets of newly discovered disease-associated genes. acknowledgement: The study was supported by Friedrich Miescher Institute funds, Alcon award, a National Center of Competence in Research Genetics grant, a European Research Council grant, a Swiss-Hungarian grant, and RETICIRC, TREATRUSH, SEEBETTER and OPTONEURO grants from the European Union to B.R. author: - first_name: Sandra full_name: Sandra Siegert id: 36ACD32E-F248-11E8-B48F-1D18A9856A87 last_name: Siegert orcid: 0000-0001-8635-0877 - first_name: Erik full_name: Cabuy, Erik last_name: Cabuy - first_name: Brigitte full_name: Scherf, Brigitte G last_name: Scherf - first_name: Hubertus full_name: Kohler, Hubertus last_name: Kohler - first_name: Satchidananda full_name: Panda, Satchidananda last_name: Panda - first_name: Yunzheng full_name: Le, Yunzheng last_name: Le - first_name: Hans full_name: Fehling, Hans J last_name: Fehling - first_name: Dimos full_name: Gaidatzis, Dimos last_name: Gaidatzis - first_name: Michael full_name: Stadler, Michael B last_name: Stadler - first_name: Botond full_name: Roska, Botond M last_name: Roska citation: ama: Siegert S, Cabuy E, Scherf B, et al. Transcriptional code and disease map for adult retinal cell types. Nature Neuroscience. 2012;15(3):487-495. doi:10.1038/nn.3032 apa: Siegert, S., Cabuy, E., Scherf, B., Kohler, H., Panda, S., Le, Y., … Roska, B. (2012). Transcriptional code and disease map for adult retinal cell types. Nature Neuroscience. Nature Publishing Group. https://doi.org/10.1038/nn.3032 chicago: Siegert, Sandra, Erik Cabuy, Brigitte Scherf, Hubertus Kohler, Satchidananda Panda, Yunzheng Le, Hans Fehling, Dimos Gaidatzis, Michael Stadler, and Botond Roska. “Transcriptional Code and Disease Map for Adult Retinal Cell Types.” Nature Neuroscience. Nature Publishing Group, 2012. https://doi.org/10.1038/nn.3032. ieee: S. Siegert et al., “Transcriptional code and disease map for adult retinal cell types,” Nature Neuroscience, vol. 15, no. 3. Nature Publishing Group, pp. 487–495, 2012. ista: Siegert S, Cabuy E, Scherf B, Kohler H, Panda S, Le Y, Fehling H, Gaidatzis D, Stadler M, Roska B. 2012. Transcriptional code and disease map for adult retinal cell types. Nature Neuroscience. 15(3), 487–495. mla: Siegert, Sandra, et al. “Transcriptional Code and Disease Map for Adult Retinal Cell Types.” Nature Neuroscience, vol. 15, no. 3, Nature Publishing Group, 2012, pp. 487–95, doi:10.1038/nn.3032. short: S. Siegert, E. Cabuy, B. Scherf, H. Kohler, S. Panda, Y. Le, H. Fehling, D. Gaidatzis, M. Stadler, B. Roska, Nature Neuroscience 15 (2012) 487–495. date_created: 2018-12-11T11:54:05Z date_published: 2012-03-01T00:00:00Z date_updated: 2021-01-12T06:53:17Z day: '01' doi: 10.1038/nn.3032 extern: 1 intvolume: ' 15' issue: '3' month: '03' page: 487 - 495 publication: Nature Neuroscience publication_status: published publisher: Nature Publishing Group publist_id: '5309' quality_controlled: 0 status: public title: Transcriptional code and disease map for adult retinal cell types type: journal_article volume: 15 year: '2012' ... --- _id: '1976' abstract: - lang: eng text: 'Complex I is a key enzyme of the respiratory chain in many organisms. This multi-protein complex with an intricate evolutionary history originated from the unification of prebuilt modules of hydrogenases and transporters. Using recently determined crystallographic structures of complex I we reanalyzed evolutionarily related complexes that couple oxidoreduction to trans-membrane ion translocation. Our analysis points to the previously unnoticed structural homology of the electron input module of formate dehydrogenlyases and subunit NuoG of complex I. We also show that all related to complex I hydrogenases likely operate via a conformation driven mechanism with structural changes generated in the conserved coupling site located at the interface of subunits NuoB/D/H. The coupling apparently originated once in evolutionary history, together with subunit NuoH joining hydrogenase and transport modules. Analysis of quinone oxidoreduction properties and the structure of complex I allows us to suggest a fully reversible coupling mechanism. Our model predicts that: 1) proton access to the ketone groups of the bound quinone is rigorously controlled by the protein, 2) the negative electric charge of the anionic ubiquinol head group is a major driving force for conformational changes.' acknowledgement: The work in authors' laboratory was funded by the Medical Research Council. author: - first_name: Rouslan full_name: Efremov, Rouslan G last_name: Efremov - first_name: Leonid A full_name: Leonid Sazanov id: 338D39FE-F248-11E8-B48F-1D18A9856A87 last_name: Sazanov orcid: 0000-0002-0977-7989 citation: ama: Efremov R, Sazanov LA. The coupling mechanism of respiratory complex i - A structural and evolutionary perspective. Biochimica et Biophysica Acta - Bioenergetics. 2012;1817(10):1785-1795. doi:10.1016/j.bbabio.2012.02.015 apa: Efremov, R., & Sazanov, L. A. (2012). The coupling mechanism of respiratory complex i - A structural and evolutionary perspective. Biochimica et Biophysica Acta - Bioenergetics. Elsevier. https://doi.org/10.1016/j.bbabio.2012.02.015 chicago: Efremov, Rouslan, and Leonid A Sazanov. “The Coupling Mechanism of Respiratory Complex i - A Structural and Evolutionary Perspective.” Biochimica et Biophysica Acta - Bioenergetics. Elsevier, 2012. https://doi.org/10.1016/j.bbabio.2012.02.015. ieee: R. Efremov and L. A. Sazanov, “The coupling mechanism of respiratory complex i - A structural and evolutionary perspective,” Biochimica et Biophysica Acta - Bioenergetics, vol. 1817, no. 10. Elsevier, pp. 1785–1795, 2012. ista: Efremov R, Sazanov LA. 2012. The coupling mechanism of respiratory complex i - A structural and evolutionary perspective. Biochimica et Biophysica Acta - Bioenergetics. 1817(10), 1785–1795. mla: Efremov, Rouslan, and Leonid A. Sazanov. “The Coupling Mechanism of Respiratory Complex i - A Structural and Evolutionary Perspective.” Biochimica et Biophysica Acta - Bioenergetics, vol. 1817, no. 10, Elsevier, 2012, pp. 1785–95, doi:10.1016/j.bbabio.2012.02.015. short: R. Efremov, L.A. Sazanov, Biochimica et Biophysica Acta - Bioenergetics 1817 (2012) 1785–1795. date_created: 2018-12-11T11:55:00Z date_published: 2012-10-01T00:00:00Z date_updated: 2019-04-26T07:22:06Z day: '01' doi: 10.1016/j.bbabio.2012.02.015 extern: 1 intvolume: ' 1817' issue: '10' month: '10' page: 1785 - 1795 publication: Biochimica et Biophysica Acta - Bioenergetics publication_status: published publisher: Elsevier publist_id: '5108' quality_controlled: 0 status: public title: The coupling mechanism of respiratory complex i - A structural and evolutionary perspective type: review volume: 1817 year: '2012' ... --- _id: '1972' abstract: - lang: eng text: Outer membrane protein F, a major component of the Escherichia coli outer membrane, was crystallized for the first time in lipidic mesophase of monoolein in novel space groups, P1 and H32. Due to ease of its purification and crystallization OmpF can be used as a benchmark protein for establishing membrane protein crystallization in meso, as a "membrane lyzozyme" The packing of porin trimers in the crystals of space group H32 is similar to natural outer membranes, providing the first high-resolution insight into the close to native packing of OmpF. Surprisingly, interaction between trimers is mediated exclusively by lipids, without direct protein-protein contacts. Multiple ordered lipids are observed and many of them occupy identical positions independently of the space group, identifying preferential interaction sites of lipid acyl chains. Presence of ordered aliphatic chains close to a positively charged area on the porin surface suggests a position for a lipopolysaccharide binding site on the surface of the major E. coli porins. acknowledgement: This work was funded by the Medical Research Council. author: - first_name: Rouslan full_name: Efremov, Rouslan G last_name: Efremov - first_name: Leonid A full_name: Leonid Sazanov id: 338D39FE-F248-11E8-B48F-1D18A9856A87 last_name: Sazanov orcid: 0000-0002-0977-7989 citation: ama: Efremov R, Sazanov LA. Structure of Escherichia coli OmpF porin from lipidic mesophase. Journal of Structural Biology. 2012;178(3):311-318. doi:10.1016/j.jsb.2012.03.005 apa: Efremov, R., & Sazanov, L. A. (2012). Structure of Escherichia coli OmpF porin from lipidic mesophase. Journal of Structural Biology. Academic Press. https://doi.org/10.1016/j.jsb.2012.03.005 chicago: Efremov, Rouslan, and Leonid A Sazanov. “Structure of Escherichia Coli OmpF Porin from Lipidic Mesophase.” Journal of Structural Biology. Academic Press, 2012. https://doi.org/10.1016/j.jsb.2012.03.005. ieee: R. Efremov and L. A. Sazanov, “Structure of Escherichia coli OmpF porin from lipidic mesophase,” Journal of Structural Biology, vol. 178, no. 3. Academic Press, pp. 311–318, 2012. ista: Efremov R, Sazanov LA. 2012. Structure of Escherichia coli OmpF porin from lipidic mesophase. Journal of Structural Biology. 178(3), 311–318. mla: Efremov, Rouslan, and Leonid A. Sazanov. “Structure of Escherichia Coli OmpF Porin from Lipidic Mesophase.” Journal of Structural Biology, vol. 178, no. 3, Academic Press, 2012, pp. 311–18, doi:10.1016/j.jsb.2012.03.005. short: R. Efremov, L.A. Sazanov, Journal of Structural Biology 178 (2012) 311–318. date_created: 2018-12-11T11:54:59Z date_published: 2012-06-01T00:00:00Z date_updated: 2021-01-12T06:54:26Z day: '01' doi: 10.1016/j.jsb.2012.03.005 extern: 1 intvolume: ' 178' issue: '3' month: '06' page: 311 - 318 publication: Journal of Structural Biology publication_status: published publisher: Academic Press publist_id: '5109' quality_controlled: 0 status: public title: Structure of Escherichia coli OmpF porin from lipidic mesophase type: journal_article volume: 178 year: '2012' ... --- _id: '1987' abstract: - lang: eng text: | In the living cell, proteins are able to organize space much larger than their dimensions. In return, changes of intracellular space can influence biochemical reactions, allowing cells to sense their size and shape. Despite the possibility to reconstitute protein self-organization with only a few purified components, we still lack knowledge of how geometrical boundaries affect spatiotemporal protein patterns. Following a minimal systems approach, we used purified proteins and photolithographically patterned membranes to study the influence of spatial confinement on the self-organization of the Min system, a spatial regulator of bacterial cytokinesis, in vitro. We found that the emerging protein pattern responds even to the lateral, two-dimensional geometry of the membrane such that, as in the three-dimensional cell, Min protein waves travel along the longest axis of the membrane patch. This shows that for spatial sensing the Min system does not need to be enclosed in a three-dimensional compartment. Using a computational model we quantitatively analyzed our experimental findings and identified persistent binding of MinE to the membrane as requirement for the Min system to sense geometry. Our results give insight into the interplay between geometrical confinement and biochemical patterns emerging from a nonlinear reaction-diffusion system. acknowledgement: 'This work was supported by the Max-Planck-Society (P.S. and M.L.) and by the German Research Foundation as part of the Research Training Group “Nano- and Biotechnologies for Electronic Device Packaging” (GRK 1401) (J.S.) and by the Leibniz-Award (P.S.). ' author: - first_name: Jakob full_name: Schweizer, Jakob last_name: Schweizer - first_name: Martin full_name: Martin Loose id: 462D4284-F248-11E8-B48F-1D18A9856A87 last_name: Loose orcid: 0000-0001-7309-9724 - first_name: Mike full_name: 'Bonny, Mike ' last_name: Bonny - first_name: Karsten full_name: Kruse, Karsten last_name: Kruse - first_name: Ingolf full_name: Mönch, Ingolf last_name: Mönch - first_name: Petra full_name: 'Schwille, Petra ' last_name: Schwille citation: ama: Schweizer J, Loose M, Bonny M, Kruse K, Mönch I, Schwille P. Geometry sensing by self-organized protein patterns. PNAS. 2012;109(38):15283-15288. doi:10.1073/pnas.1206953109 apa: Schweizer, J., Loose, M., Bonny, M., Kruse, K., Mönch, I., & Schwille, P. (2012). Geometry sensing by self-organized protein patterns. PNAS. National Academy of Sciences. https://doi.org/10.1073/pnas.1206953109 chicago: Schweizer, Jakob, Martin Loose, Mike Bonny, Karsten Kruse, Ingolf Mönch, and Petra Schwille. “Geometry Sensing by Self-Organized Protein Patterns.” PNAS. National Academy of Sciences, 2012. https://doi.org/10.1073/pnas.1206953109. ieee: J. Schweizer, M. Loose, M. Bonny, K. Kruse, I. Mönch, and P. Schwille, “Geometry sensing by self-organized protein patterns,” PNAS, vol. 109, no. 38. National Academy of Sciences, pp. 15283–15288, 2012. ista: Schweizer J, Loose M, Bonny M, Kruse K, Mönch I, Schwille P. 2012. Geometry sensing by self-organized protein patterns. PNAS. 109(38), 15283–15288. mla: Schweizer, Jakob, et al. “Geometry Sensing by Self-Organized Protein Patterns.” PNAS, vol. 109, no. 38, National Academy of Sciences, 2012, pp. 15283–88, doi:10.1073/pnas.1206953109. short: J. Schweizer, M. Loose, M. Bonny, K. Kruse, I. Mönch, P. Schwille, PNAS 109 (2012) 15283–15288. date_created: 2018-12-11T11:55:04Z date_published: 2012-09-18T00:00:00Z date_updated: 2021-01-12T06:54:31Z day: '18' doi: 10.1073/pnas.1206953109 extern: 1 intvolume: ' 109' issue: '38' month: '09' page: 15283 - 15288 publication: PNAS publication_status: published publisher: National Academy of Sciences publist_id: '5096' quality_controlled: 0 status: public title: Geometry sensing by self-organized protein patterns type: journal_article volume: 109 year: '2012' ... --- _id: '2048' abstract: - lang: eng text: Leakage resilient cryptography attempts to incorporate side-channel leakage into the black-box security model and designs cryptographic schemes that are provably secure within it. Informally, a scheme is leakage-resilient if it remains secure even if an adversary learns a bounded amount of arbitrary information about the schemes internal state. Unfortunately, most leakage resilient schemes are unnecessarily complicated in order to achieve strong provable security guarantees. As advocated by Yu et al. [CCS’10], this mostly is an artefact of the security proof and in practice much simpler construction may already suffice to protect against realistic side-channel attacks. In this paper, we show that indeed for simpler constructions leakage-resilience can be obtained when we aim for relaxed security notions where the leakage-functions and/or the inputs to the primitive are chosen non-adaptively. For example, we show that a three round Feistel network instantiated with a leakage resilient PRF yields a leakage resilient PRP if the inputs are chosen non-adaptively (This complements the result of Dodis and Pietrzak [CRYPTO’10] who show that if a adaptive queries are allowed, a superlogarithmic number of rounds is necessary.) We also show that a minor variation of the classical GGM construction gives a leakage resilient PRF if both, the leakage-function and the inputs, are chosen non-adaptively. acknowledgement: "Sebastian Faust acknowledges support from the Danish National Research Foundation and The National Science Foundation of China (under the grant 61061130540) for the Sino-Danish Center for the Theory of Interactive Computation, within part of this work was performed; and from the CFEM research center, supported by the Danish Strategic Research Council. \r\nSupported by the European Research Council/ERC Starting Grant 259668-PSPC.\r\n" alternative_title: - LNCS author: - first_name: Sebastian full_name: Faust, Sebastian last_name: Faust - first_name: Krzysztof Z full_name: Pietrzak, Krzysztof Z id: 3E04A7AA-F248-11E8-B48F-1D18A9856A87 last_name: Pietrzak orcid: 0000-0002-9139-1654 - first_name: Joachim full_name: Schipper, Joachim id: 7BE863D4-E9CF-11E9-9EDB-90527418172C last_name: Schipper citation: ama: 'Faust S, Pietrzak KZ, Schipper J. Practical leakage-resilient symmetric cryptography. In: Conference Proceedings CHES 2012. Vol 7428. Springer; 2012:213-232. doi:10.1007/978-3-642-33027-8_13' apa: 'Faust, S., Pietrzak, K. Z., & Schipper, J. (2012). Practical leakage-resilient symmetric cryptography. In Conference proceedings CHES 2012 (Vol. 7428, pp. 213–232). Leuven, Belgium: Springer. https://doi.org/10.1007/978-3-642-33027-8_13' chicago: Faust, Sebastian, Krzysztof Z Pietrzak, and Joachim Schipper. “Practical Leakage-Resilient Symmetric Cryptography.” In Conference Proceedings CHES 2012, 7428:213–32. Springer, 2012. https://doi.org/10.1007/978-3-642-33027-8_13. ieee: S. Faust, K. Z. Pietrzak, and J. Schipper, “Practical leakage-resilient symmetric cryptography,” in Conference proceedings CHES 2012, Leuven, Belgium, 2012, vol. 7428, pp. 213–232. ista: 'Faust S, Pietrzak KZ, Schipper J. 2012. Practical leakage-resilient symmetric cryptography. Conference proceedings CHES 2012. CHES: Cryptographic Hardware and Embedded Systems, LNCS, vol. 7428, 213–232.' mla: Faust, Sebastian, et al. “Practical Leakage-Resilient Symmetric Cryptography.” Conference Proceedings CHES 2012, vol. 7428, Springer, 2012, pp. 213–32, doi:10.1007/978-3-642-33027-8_13. short: S. Faust, K.Z. Pietrzak, J. Schipper, in:, Conference Proceedings CHES 2012, Springer, 2012, pp. 213–232. conference: end_date: 2012-09-12 location: Leuven, Belgium name: 'CHES: Cryptographic Hardware and Embedded Systems' start_date: 2012-09-09 date_created: 2018-12-11T11:55:25Z date_published: 2012-09-01T00:00:00Z date_updated: 2021-01-12T06:54:58Z day: '01' department: - _id: KrPi doi: 10.1007/978-3-642-33027-8_13 ec_funded: 1 intvolume: ' 7428' language: - iso: eng main_file_link: - open_access: '1' url: http://www.iacr.org/archive/ches2012/74280211/74280211.pdf month: '09' oa: 1 oa_version: Preprint page: 213 - 232 project: - _id: 258C570E-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '259668' name: Provable Security for Physical Cryptography publication: ' Conference proceedings CHES 2012' publication_status: published publisher: Springer publist_id: '5003' quality_controlled: '1' scopus_import: 1 status: public title: Practical leakage-resilient symmetric cryptography type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 7428 year: '2012' ... --- _id: '2049' abstract: - lang: eng text: "We propose a new authentication protocol that is provably secure based on a ring variant of the learning parity with noise (LPN) problem. The protocol follows the design principle of the LPN-based protocol from Eurocrypt’11 (Kiltz et al.), and like it, is a two round protocol secure against active attacks. Moreover, our protocol has small communication complexity and a very small footprint which makes it applicable in scenarios that involve low-cost, resource-constrained devices.\r\n\r\nPerformance-wise, our protocol is more efficient than previous LPN-based schemes, such as the many variants of the Hopper-Blum (HB) protocol and the aforementioned protocol from Eurocrypt’11. Our implementation results show that it is even comparable to the standard challenge-and-response protocols based on the AES block-cipher. Our basic protocol is roughly 20 times slower than AES, but with the advantage of having 10 times smaller code size. Furthermore, if a few hundred bytes of non-volatile memory are available to allow the storage of some off-line pre-computations, then the online phase of our protocols is only twice as slow as AES.\r\n" acknowledgement: "Supported by the European Research Council / ERC Starting Grant (259668- PSPC)\r\nWe would like to thank the anonymous referees of this confer- ence and those of the ECRYPT Workshop on Lightweight Cryptography for very useful comments, and in particular for the suggestion that the scheme is somewhat vulnerable to a man-in-the-middle attack whenever an adversary observes two reader challenges that are the same. We hope that the attack we described in Appendix A corresponds to what the reviewer had in mind. We also thank Tanja Lange for pointing us to the pa- per of [Kir11] and for discussions of some of her recent work. " alternative_title: - LNCS author: - first_name: Stefan full_name: Heyse, Stefan last_name: Heyse - first_name: Eike full_name: Kiltz, Eike last_name: Kiltz - first_name: Vadim full_name: Lyubashevsky, Vadim last_name: Lyubashevsky - first_name: Christof full_name: Paar, Christof last_name: Paar - first_name: Krzysztof Z full_name: Pietrzak, Krzysztof Z id: 3E04A7AA-F248-11E8-B48F-1D18A9856A87 last_name: Pietrzak orcid: 0000-0002-9139-1654 citation: ama: 'Heyse S, Kiltz E, Lyubashevsky V, Paar C, Pietrzak KZ. Lapin: An efficient authentication protocol based on ring-LPN. In: Conference Proceedings FSE 2012. Vol 7549. Springer; 2012:346-365. doi:10.1007/978-3-642-34047-5_20' apa: 'Heyse, S., Kiltz, E., Lyubashevsky, V., Paar, C., & Pietrzak, K. Z. (2012). Lapin: An efficient authentication protocol based on ring-LPN. In Conference proceedings FSE 2012 (Vol. 7549, pp. 346–365). Washington, DC, USA: Springer. https://doi.org/10.1007/978-3-642-34047-5_20' chicago: 'Heyse, Stefan, Eike Kiltz, Vadim Lyubashevsky, Christof Paar, and Krzysztof Z Pietrzak. “Lapin: An Efficient Authentication Protocol Based on Ring-LPN.” In Conference Proceedings FSE 2012, 7549:346–65. Springer, 2012. https://doi.org/10.1007/978-3-642-34047-5_20.' ieee: 'S. Heyse, E. Kiltz, V. Lyubashevsky, C. Paar, and K. Z. Pietrzak, “Lapin: An efficient authentication protocol based on ring-LPN,” in Conference proceedings FSE 2012, Washington, DC, USA, 2012, vol. 7549, pp. 346–365.' ista: 'Heyse S, Kiltz E, Lyubashevsky V, Paar C, Pietrzak KZ. 2012. Lapin: An efficient authentication protocol based on ring-LPN. Conference proceedings FSE 2012. FSE: Fast Software Encryption, LNCS, vol. 7549, 346–365.' mla: 'Heyse, Stefan, et al. “Lapin: An Efficient Authentication Protocol Based on Ring-LPN.” Conference Proceedings FSE 2012, vol. 7549, Springer, 2012, pp. 346–65, doi:10.1007/978-3-642-34047-5_20.' short: S. Heyse, E. Kiltz, V. Lyubashevsky, C. Paar, K.Z. Pietrzak, in:, Conference Proceedings FSE 2012, Springer, 2012, pp. 346–365. conference: end_date: 2012-03-21 location: Washington, DC, USA name: 'FSE: Fast Software Encryption' start_date: 2012-03-19 date_created: 2018-12-11T11:55:25Z date_published: 2012-03-01T00:00:00Z date_updated: 2021-01-12T06:54:58Z day: '01' department: - _id: KrPi doi: 10.1007/978-3-642-34047-5_20 ec_funded: 1 intvolume: ' 7549' language: - iso: eng main_file_link: - open_access: '1' url: http://www.iacr.org/archive/fse2012/75490350/75490350.pdf month: '03' oa: 1 oa_version: Preprint page: 346 - 365 project: - _id: 258C570E-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '259668' name: Provable Security for Physical Cryptography publication: ' Conference proceedings FSE 2012' publication_status: published publisher: Springer publist_id: '5002' quality_controlled: '1' scopus_import: 1 status: public title: 'Lapin: An efficient authentication protocol based on ring-LPN' type: conference user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 7549 year: '2012' ...