Precision measurements on a tunable Mott insulator of ultracold atoms

M. Mark, E. Haller, K. Lauber, J.G. Danzl, A. Daley, H. Nägerl, Physical Review Letters 107 (2011).


Journal Article | Published | English
Author
Mark, Manfred; Haller, Elmar; Lauber, Katharina; Danzl, Johann GIST Austria ; Daley, Andrew; Nägerl, Hanns
Abstract
We perform precision measurements on a Mott-insulator quantum state of ultracold atoms with tunable interactions. We probe the dependence of the superfluid-to-Mott-insulator transition on the interaction strength and explore the limits of the standard Bose-Hubbard model description. By tuning the on-site interaction energies to values comparable to the interband separation, we are able to quantitatively measure number-dependent shifts in the excitation spectrum caused by effective multibody interactions.
Publishing Year
Date Published
2011-10-18
Journal Title
Physical Review Letters
Acknowledgement
We are indebted to R. Grimm for generous support. We thank D. Boyanovsky, H. Büchler, P. Johnson, W. Niedenzu, and E. Tiesinga for fruitful discussions. We gratefully acknowledge funding by the Austrian Science Fund (FWF) within project I153-N16 and within the framework of the European Science Foundation (ESF) EuroQUASAR collective research project QuDeGPM.
Volume
107
Issue
17
IST-REx-ID

Cite this

Mark M, Haller E, Lauber K, Danzl JG, Daley A, Nägerl H. Precision measurements on a tunable Mott insulator of ultracold atoms. Physical Review Letters. 2011;107(17). doi:10.1103/PhysRevLett.107.175301
Mark, M., Haller, E., Lauber, K., Danzl, J. G., Daley, A., & Nägerl, H. (2011). Precision measurements on a tunable Mott insulator of ultracold atoms. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.107.175301
Mark, Manfred, Elmar Haller, Katharina Lauber, Johann G Danzl, Andrew Daley, and Hanns Nägerl. “Precision Measurements on a Tunable Mott Insulator of Ultracold Atoms.” Physical Review Letters. American Physical Society, 2011. https://doi.org/10.1103/PhysRevLett.107.175301.
M. Mark, E. Haller, K. Lauber, J. G. Danzl, A. Daley, and H. Nägerl, “Precision measurements on a tunable Mott insulator of ultracold atoms,” Physical Review Letters, vol. 107, no. 17. American Physical Society, 2011.
Mark M, Haller E, Lauber K, Danzl JG, Daley A, Nägerl H. 2011. Precision measurements on a tunable Mott insulator of ultracold atoms. Physical Review Letters. 107(17).
Mark, Manfred, et al. “Precision Measurements on a Tunable Mott Insulator of Ultracold Atoms.” Physical Review Letters, vol. 107, no. 17, American Physical Society, 2011, doi:10.1103/PhysRevLett.107.175301.
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