Precision measurements on a tunable Mott insulator of ultracold atoms

M.J. Mark, Elmar Haller, K. Lauber, J.G. Danzl, Andrew Daley, H.-C. Nägerl

Research output: Contribution to journalArticle

54 Citations (Scopus)

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.
Original languageEnglish
Article number175301
Number of pages5
JournalPhysical Review Letters
Volume107
Issue number17
DOIs
Publication statusPublished - 18 Oct 2011

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insulators
atoms
interactions
tuning
probes
shift
excitation
energy

Keywords

  • Mott insulator
  • ultracold atoms
  • precision measurements

Cite this

Mark, M.J. ; Haller, Elmar ; Lauber, K. ; Danzl, J.G. ; Daley, Andrew ; Nägerl, H.-C. / Precision measurements on a tunable Mott insulator of ultracold atoms. In: Physical Review Letters. 2011 ; Vol. 107, No. 17.
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Precision measurements on a tunable Mott insulator of ultracold atoms. / Mark, M.J.; Haller, Elmar; Lauber, K.; Danzl, J.G.; Daley, Andrew; Nägerl, H.-C.

In: Physical Review Letters, Vol. 107, No. 17, 175301, 18.10.2011.

Research output: Contribution to journalArticle

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