---
_id: '798'
abstract:
- lang: eng
text: Nonreciprocal circuit elements form an integral part of modern measurement
and communication systems. Mathematically they require breaking of time-reversal
symmetry, typically achieved using magnetic materials and more recently using
the quantum Hall effect, parametric permittivity modulation or Josephson nonlinearities.
Here we demonstrate an on-chip magnetic-free circulator based on reservoir-engineered
electromechanic interactions. Directional circulation is achieved with controlled
phase-sensitive interference of six distinct electro-mechanical signal conversion
paths. The presented circulator is compact, its silicon-on-insulator platform
is compatible with both superconducting qubits and silicon photonics, and its
noise performance is close to the quantum limit. With a high dynamic range, a
tunable bandwidth of up to 30 MHz and an in situ reconfigurability as beam splitter
or wavelength converter, it could pave the way for superconducting qubit processors
with multiplexed on-chip signal processing and readout.
article_number: '1304'
article_processing_charge: Yes (in subscription journal)
author:
- first_name: Shabir
full_name: Barzanjeh, Shabir
id: 2D25E1F6-F248-11E8-B48F-1D18A9856A87
last_name: Barzanjeh
orcid: 0000-0003-0415-1423
- first_name: Matthias
full_name: Wulf, Matthias
id: 45598606-F248-11E8-B48F-1D18A9856A87
last_name: Wulf
orcid: 0000-0001-6613-1378
- first_name: Matilda
full_name: Peruzzo, Matilda
id: 3F920B30-F248-11E8-B48F-1D18A9856A87
last_name: Peruzzo
orcid: 0000-0002-3415-4628
- first_name: Mahmoud
full_name: Kalaee, Mahmoud
last_name: Kalaee
- first_name: Paul
full_name: Dieterle, Paul
last_name: Dieterle
- first_name: Oskar
full_name: Painter, Oskar
last_name: Painter
- first_name: Johannes M
full_name: Fink, Johannes M
id: 4B591CBA-F248-11E8-B48F-1D18A9856A87
last_name: Fink
orcid: 0000-0001-8112-028X
citation:
ama: Barzanjeh S, Wulf M, Peruzzo M, et al. Mechanical on chip microwave circulator.
Nature Communications. 2017;8(1). doi:10.1038/s41467-017-01304-x
apa: Barzanjeh, S., Wulf, M., Peruzzo, M., Kalaee, M., Dieterle, P., Painter, O.,
& Fink, J. M. (2017). Mechanical on chip microwave circulator. Nature Communications.
Nature Publishing Group. https://doi.org/10.1038/s41467-017-01304-x
chicago: Barzanjeh, Shabir, Matthias Wulf, Matilda Peruzzo, Mahmoud Kalaee, Paul
Dieterle, Oskar Painter, and Johannes M Fink. “Mechanical on Chip Microwave Circulator.”
Nature Communications. Nature Publishing Group, 2017. https://doi.org/10.1038/s41467-017-01304-x.
ieee: S. Barzanjeh et al., “Mechanical on chip microwave circulator,” Nature
Communications, vol. 8, no. 1. Nature Publishing Group, 2017.
ista: Barzanjeh S, Wulf M, Peruzzo M, Kalaee M, Dieterle P, Painter O, Fink JM.
2017. Mechanical on chip microwave circulator. Nature Communications. 8(1), 1304.
mla: Barzanjeh, Shabir, et al. “Mechanical on Chip Microwave Circulator.” Nature
Communications, vol. 8, no. 1, 1304, Nature Publishing Group, 2017, doi:10.1038/s41467-017-01304-x.
short: S. Barzanjeh, M. Wulf, M. Peruzzo, M. Kalaee, P. Dieterle, O. Painter, J.M.
Fink, Nature Communications 8 (2017).
date_created: 2018-12-11T11:48:33Z
date_published: 2017-10-16T00:00:00Z
date_updated: 2023-09-27T12:11:28Z
day: '16'
ddc:
- '539'
department:
- _id: JoFi
doi: 10.1038/s41467-017-01304-x
ec_funded: 1
external_id:
isi:
- '000412999700021'
file:
- access_level: open_access
checksum: b68dafa71d1834c23b742cd9987a3d5f
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:15:25Z
date_updated: 2020-07-14T12:48:06Z
file_id: '5145'
file_name: IST-2017-867-v1+1_s41467-017-01304-x.pdf
file_size: 1467696
relation: main_file
file_date_updated: 2020-07-14T12:48:06Z
has_accepted_license: '1'
intvolume: ' 8'
isi: 1
issue: '1'
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
project:
- _id: 257EB838-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '732894'
name: Hybrid Optomechanical Technologies
- _id: 258047B6-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '707438'
name: 'Microwave-to-Optical Quantum Link: Quantum Teleportation and Quantum Illumination
with cavity Optomechanics'
publication: Nature Communications
publication_identifier:
issn:
- '20411723'
publication_status: published
publisher: Nature Publishing Group
publist_id: '6855'
pubrep_id: '867'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Mechanical on chip microwave circulator
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 8
year: '2017'
...
---
_id: '791'
abstract:
- lang: eng
text: 'Consider the following random process: we are given n queues, into which
elements of increasing labels are inserted uniformly at random. To remove an element,
we pick two queues at random, and remove the element of lower label (higher priority)
among the two. The cost of a removal is the rank of the label removed, among labels
still present in any of the queues, that is, the distance from the optimal choice
at each step. Variants of this strategy are prevalent in state-of-the-art concurrent
priority queue implementations. Nonetheless, it is not known whether such implementations
provide any rank guarantees, even in a sequential model. We answer this question,
showing that this strategy provides surprisingly strong guarantees: Although the
single-choice process, where we always insert and remove from a single randomly
chosen queue, has degrading cost, going to infinity as we increase the number
of steps, in the two choice process, the expected rank of a removed element is
O(n) while the expected worst-case cost is O(n log n). These bounds are tight,
and hold irrespective of the number of steps for which we run the process. The
argument is based on a new technical connection between "heavily loaded"
balls-into-bins processes and priority scheduling. Our analytic results inspire
a new concurrent priority queue implementation, which improves upon the state
of the art in terms of practical performance.'
article_processing_charge: No
author:
- first_name: Dan-Adrian
full_name: Alistarh, Dan-Adrian
id: 4A899BFC-F248-11E8-B48F-1D18A9856A87
last_name: Alistarh
orcid: 0000-0003-3650-940X
- first_name: Justin
full_name: Kopinsky, Justin
last_name: Kopinsky
- first_name: Jerry
full_name: Li, Jerry
last_name: Li
- first_name: Giorgi
full_name: Nadiradze, Giorgi
id: 3279A00C-F248-11E8-B48F-1D18A9856A87
last_name: Nadiradze
orcid: 0000-0001-5634-0731
citation:
ama: 'Alistarh D-A, Kopinsky J, Li J, Nadiradze G. The power of choice in priority
scheduling. In: Proceedings of the ACM Symposium on Principles of Distributed
Computing. Vol Part F129314. ACM; 2017:283-292. doi:10.1145/3087801.3087810'
apa: 'Alistarh, D.-A., Kopinsky, J., Li, J., & Nadiradze, G. (2017). The power
of choice in priority scheduling. In Proceedings of the ACM Symposium on Principles
of Distributed Computing (Vol. Part F129314, pp. 283–292). Washington, WA,
USA: ACM. https://doi.org/10.1145/3087801.3087810'
chicago: Alistarh, Dan-Adrian, Justin Kopinsky, Jerry Li, and Giorgi Nadiradze.
“The Power of Choice in Priority Scheduling.” In Proceedings of the ACM Symposium
on Principles of Distributed Computing, Part F129314:283–92. ACM, 2017. https://doi.org/10.1145/3087801.3087810.
ieee: D.-A. Alistarh, J. Kopinsky, J. Li, and G. Nadiradze, “The power of choice
in priority scheduling,” in Proceedings of the ACM Symposium on Principles
of Distributed Computing, Washington, WA, USA, 2017, vol. Part F129314, pp.
283–292.
ista: 'Alistarh D-A, Kopinsky J, Li J, Nadiradze G. 2017. The power of choice in
priority scheduling. Proceedings of the ACM Symposium on Principles of Distributed
Computing. PODC: Principles of Distributed Computing vol. Part F129314, 283–292.'
mla: Alistarh, Dan-Adrian, et al. “The Power of Choice in Priority Scheduling.”
Proceedings of the ACM Symposium on Principles of Distributed Computing,
vol. Part F129314, ACM, 2017, pp. 283–92, doi:10.1145/3087801.3087810.
short: D.-A. Alistarh, J. Kopinsky, J. Li, G. Nadiradze, in:, Proceedings of the
ACM Symposium on Principles of Distributed Computing, ACM, 2017, pp. 283–292.
conference:
end_date: 2017-07-27
location: Washington, WA, USA
name: 'PODC: Principles of Distributed Computing'
start_date: 2017-07-25
date_created: 2018-12-11T11:48:31Z
date_published: 2017-07-26T00:00:00Z
date_updated: 2023-09-27T12:17:59Z
day: '26'
department:
- _id: DaAl
doi: 10.1145/3087801.3087810
external_id:
isi:
- '000462995000035'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1706.04178
month: '07'
oa: 1
oa_version: Submitted Version
page: 283 - 292
publication: Proceedings of the ACM Symposium on Principles of Distributed Computing
publication_identifier:
isbn:
- 978-145034992-5
publication_status: published
publisher: ACM
publist_id: '6864'
quality_controlled: '1'
scopus_import: '1'
status: public
title: The power of choice in priority scheduling
type: conference
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: Part F129314
year: '2017'
...
---
_id: '792'
abstract:
- lang: eng
text: The chaotic dynamics of low-dimensional systems, such as Lorenz or Rössler
flows, is guided by the infinity of periodic orbits embedded in their strange
attractors. Whether this is also the case for the infinite-dimensional dynamics
of Navier–Stokes equations has long been speculated, and is a topic of ongoing
study. Periodic and relative periodic solutions have been shown to be involved
in transitions to turbulence. Their relevance to turbulent dynamics – specifically,
whether periodic orbits play the same role in high-dimensional nonlinear systems
like the Navier–Stokes equations as they do in lower-dimensional systems – is
the focus of the present investigation. We perform here a detailed study of pipe
flow relative periodic orbits with energies and mean dissipations close to turbulent
values. We outline several approaches to reduction of the translational symmetry
of the system. We study pipe flow in a minimal computational cell at Re=2500,
and report a library of invariant solutions found with the aid of the method of
slices. Detailed study of the unstable manifolds of a sample of these solutions
is consistent with the picture that relative periodic orbits are embedded in the
chaotic saddle and that they guide the turbulent dynamics.
article_processing_charge: No
author:
- first_name: Nazmi B
full_name: Budanur, Nazmi B
id: 3EA1010E-F248-11E8-B48F-1D18A9856A87
last_name: Budanur
orcid: 0000-0003-0423-5010
- first_name: Kimberly
full_name: Short, Kimberly
last_name: Short
- first_name: Mohammad
full_name: Farazmand, Mohammad
last_name: Farazmand
- first_name: Ashley
full_name: Willis, Ashley
last_name: Willis
- first_name: Predrag
full_name: Cvitanović, Predrag
last_name: Cvitanović
citation:
ama: Budanur NB, Short K, Farazmand M, Willis A, Cvitanović P. Relative periodic
orbits form the backbone of turbulent pipe flow. Journal of Fluid Mechanics.
2017;833:274-301. doi:10.1017/jfm.2017.699
apa: Budanur, N. B., Short, K., Farazmand, M., Willis, A., & Cvitanović, P.
(2017). Relative periodic orbits form the backbone of turbulent pipe flow. Journal
of Fluid Mechanics. Cambridge University Press. https://doi.org/10.1017/jfm.2017.699
chicago: Budanur, Nazmi B, Kimberly Short, Mohammad Farazmand, Ashley Willis, and
Predrag Cvitanović. “Relative Periodic Orbits Form the Backbone of Turbulent Pipe
Flow.” Journal of Fluid Mechanics. Cambridge University Press, 2017. https://doi.org/10.1017/jfm.2017.699.
ieee: N. B. Budanur, K. Short, M. Farazmand, A. Willis, and P. Cvitanović, “Relative
periodic orbits form the backbone of turbulent pipe flow,” Journal of Fluid
Mechanics, vol. 833. Cambridge University Press, pp. 274–301, 2017.
ista: Budanur NB, Short K, Farazmand M, Willis A, Cvitanović P. 2017. Relative periodic
orbits form the backbone of turbulent pipe flow. Journal of Fluid Mechanics. 833,
274–301.
mla: Budanur, Nazmi B., et al. “Relative Periodic Orbits Form the Backbone of Turbulent
Pipe Flow.” Journal of Fluid Mechanics, vol. 833, Cambridge University
Press, 2017, pp. 274–301, doi:10.1017/jfm.2017.699.
short: N.B. Budanur, K. Short, M. Farazmand, A. Willis, P. Cvitanović, Journal of
Fluid Mechanics 833 (2017) 274–301.
date_created: 2018-12-11T11:48:32Z
date_published: 2017-12-25T00:00:00Z
date_updated: 2023-09-27T12:17:35Z
day: '25'
department:
- _id: BjHo
doi: 10.1017/jfm.2017.699
external_id:
isi:
- '000414641700001'
intvolume: ' 833'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1705.03720
month: '12'
oa: 1
oa_version: Submitted Version
page: 274 - 301
project:
- _id: 25636330-B435-11E9-9278-68D0E5697425
grant_number: 11-NSF-1070
name: ROOTS Genome-wide Analysis of Root Traits
publication: Journal of Fluid Mechanics
publication_identifier:
issn:
- '00221120'
publication_status: published
publisher: Cambridge University Press
publist_id: '6862'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Relative periodic orbits form the backbone of turbulent pipe flow
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 833
year: '2017'
...
---
_id: '796'
abstract:
- lang: eng
text: We present the fabrication and characterization of an aluminum transmon qubit
on a silicon-on-insulator substrate. Key to the qubit fabrication is the use of
an anhydrous hydrofluoric vapor process which selectively removes the lossy silicon
oxide buried underneath the silicon device layer. For a 5.6 GHz qubit measured
dispersively by a 7.1 GHz resonator, we find T1 = 3.5 μs and T∗2 = 2.2 μs. This
process in principle permits the co-fabrication of silicon photonic and mechanical
elements, providing a route towards chip-scale integration of electro-opto-mechanical
transducers for quantum networking of superconducting microwave quantum circuits.
The additional processing steps are compatible with established fabrication techniques
for aluminum transmon qubits on silicon.
acknowledgement: This work was supported by the AFOSR MURI Quantum Photonic Matter
(Grant No. 16RT0696), the AFOSR MURI Wiring Quantum Networks with Mechanical Transducers
(Grant No. FA9550-15-1-0015), the Institute for Quantum Information and Matter,
an NSF Physics Frontiers Center (Grant No. PHY-1125565) with the support of the
Gordon and Betty Moore Foundation, and the Kavli Nanoscience Institute at Caltech.
A.J.K. acknowledges the IQIM Postdoctoral Fellowship.
article_number: '042603'
article_processing_charge: No
author:
- first_name: Andrew J
full_name: Keller, Andrew J
last_name: Keller
- first_name: Paul
full_name: Dieterle, Paul
last_name: Dieterle
- first_name: Michael
full_name: Fang, Michael
last_name: Fang
- first_name: Brett
full_name: Berger, Brett
last_name: Berger
- first_name: Johannes M
full_name: Fink, Johannes M
id: 4B591CBA-F248-11E8-B48F-1D18A9856A87
last_name: Fink
orcid: 0000-0001-8112-028X
- first_name: Oskar
full_name: Painter, Oskar
last_name: Painter
citation:
ama: Keller AJ, Dieterle P, Fang M, Berger B, Fink JM, Painter O. Al transmon qubits
on silicon on insulator for quantum device integration. Applied Physics Letters.
2017;111(4). doi:10.1063/1.4994661
apa: Keller, A. J., Dieterle, P., Fang, M., Berger, B., Fink, J. M., & Painter,
O. (2017). Al transmon qubits on silicon on insulator for quantum device integration.
Applied Physics Letters. American Institute of Physics. https://doi.org/10.1063/1.4994661
chicago: Keller, Andrew J, Paul Dieterle, Michael Fang, Brett Berger, Johannes M
Fink, and Oskar Painter. “Al Transmon Qubits on Silicon on Insulator for Quantum
Device Integration.” Applied Physics Letters. American Institute of Physics,
2017. https://doi.org/10.1063/1.4994661.
ieee: A. J. Keller, P. Dieterle, M. Fang, B. Berger, J. M. Fink, and O. Painter,
“Al transmon qubits on silicon on insulator for quantum device integration,” Applied
Physics Letters, vol. 111, no. 4. American Institute of Physics, 2017.
ista: Keller AJ, Dieterle P, Fang M, Berger B, Fink JM, Painter O. 2017. Al transmon
qubits on silicon on insulator for quantum device integration. Applied Physics
Letters. 111(4), 042603.
mla: Keller, Andrew J., et al. “Al Transmon Qubits on Silicon on Insulator for Quantum
Device Integration.” Applied Physics Letters, vol. 111, no. 4, 042603,
American Institute of Physics, 2017, doi:10.1063/1.4994661.
short: A.J. Keller, P. Dieterle, M. Fang, B. Berger, J.M. Fink, O. Painter, Applied
Physics Letters 111 (2017).
date_created: 2018-12-11T11:48:33Z
date_published: 2017-07-01T00:00:00Z
date_updated: 2023-09-27T12:13:36Z
day: '01'
department:
- _id: JoFi
doi: 10.1063/1.4994661
external_id:
isi:
- '000406779700031'
intvolume: ' 111'
isi: 1
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1703.10195
month: '07'
oa: 1
oa_version: Submitted Version
publication: Applied Physics Letters
publication_identifier:
issn:
- '00036951'
publication_status: published
publisher: American Institute of Physics
publist_id: '6857'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Al transmon qubits on silicon on insulator for quantum device integration
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 111
year: '2017'
...
---
_id: '793'
abstract:
- lang: eng
text: 'Let P be a finite point set in the plane. A cordinary triangle in P is a
subset of P consisting of three non-collinear points such that each of the three
lines determined by the three points contains at most c points of P . Motivated
by a question of Erdös, and answering a question of de Zeeuw, we prove that there
exists a constant c > 0such that P contains a c-ordinary triangle, provided
that P is not contained in the union of two lines. Furthermore, the number of
c-ordinary triangles in P is Ω(| P |). '
article_processing_charge: No
author:
- first_name: Radoslav
full_name: Fulek, Radoslav
id: 39F3FFE4-F248-11E8-B48F-1D18A9856A87
last_name: Fulek
orcid: 0000-0001-8485-1774
- first_name: Hossein
full_name: Mojarrad, Hossein
last_name: Mojarrad
- first_name: Márton
full_name: Naszódi, Márton
last_name: Naszódi
- first_name: József
full_name: Solymosi, József
last_name: Solymosi
- first_name: Sebastian
full_name: Stich, Sebastian
last_name: Stich
- first_name: May
full_name: Szedlák, May
last_name: Szedlák
citation:
ama: 'Fulek R, Mojarrad H, Naszódi M, Solymosi J, Stich S, Szedlák M. On the existence
of ordinary triangles. Computational Geometry: Theory and Applications.
2017;66:28-31. doi:10.1016/j.comgeo.2017.07.002'
apa: 'Fulek, R., Mojarrad, H., Naszódi, M., Solymosi, J., Stich, S., & Szedlák,
M. (2017). On the existence of ordinary triangles. Computational Geometry:
Theory and Applications. Elsevier. https://doi.org/10.1016/j.comgeo.2017.07.002'
chicago: 'Fulek, Radoslav, Hossein Mojarrad, Márton Naszódi, József Solymosi, Sebastian
Stich, and May Szedlák. “On the Existence of Ordinary Triangles.” Computational
Geometry: Theory and Applications. Elsevier, 2017. https://doi.org/10.1016/j.comgeo.2017.07.002.'
ieee: 'R. Fulek, H. Mojarrad, M. Naszódi, J. Solymosi, S. Stich, and M. Szedlák,
“On the existence of ordinary triangles,” Computational Geometry: Theory and
Applications, vol. 66. Elsevier, pp. 28–31, 2017.'
ista: 'Fulek R, Mojarrad H, Naszódi M, Solymosi J, Stich S, Szedlák M. 2017. On
the existence of ordinary triangles. Computational Geometry: Theory and Applications.
66, 28–31.'
mla: 'Fulek, Radoslav, et al. “On the Existence of Ordinary Triangles.” Computational
Geometry: Theory and Applications, vol. 66, Elsevier, 2017, pp. 28–31, doi:10.1016/j.comgeo.2017.07.002.'
short: 'R. Fulek, H. Mojarrad, M. Naszódi, J. Solymosi, S. Stich, M. Szedlák, Computational
Geometry: Theory and Applications 66 (2017) 28–31.'
date_created: 2018-12-11T11:48:32Z
date_published: 2017-01-01T00:00:00Z
date_updated: 2023-09-27T12:15:16Z
day: '01'
department:
- _id: UlWa
doi: 10.1016/j.comgeo.2017.07.002
ec_funded: 1
external_id:
isi:
- '000412039700003'
intvolume: ' 66'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1701.08183
month: '01'
oa: 1
oa_version: Submitted Version
page: 28 - 31
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
publication: 'Computational Geometry: Theory and Applications'
publication_identifier:
issn:
- '09257721'
publication_status: published
publisher: Elsevier
publist_id: '6861'
quality_controlled: '1'
status: public
title: On the existence of ordinary triangles
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 66
year: '2017'
...