Ultra-Cold Bosons in Optical Lattice: Time-of-Flight Imaging of Atom-Atom Correlations

• Authors: T. Zaleski , T. Kopeć
• Languages of publication: EN

Abstracts

EN

In the present paper, we investigate a system of strongly interacting bosons confined in two-dimensional optical lattice. We propose a combination of the Bogoliubov method with the quantum rotor approach and determine the spatial atom-atom correlations. This allows us to calculate time-of-flight absorption images, which exhibit all the characteristic features present in experimental results, namely transition from superfluid peaks to Mott insulating blob.

Keywords

EN

03.75.Kk; 05.30.Jp; 67.85.Hj

Discipline

• 03.75.Kk: Dynamic properties of condensates; collective and hydrodynamic excitations, superfluid flow
• 67.85.Hj: Bose-Einstein condensates in optical potentials
• 05.30.Jp: Boson systems(for static and dynamic properties of Bose-Einstein condensates, see 03.75.Hh and 03.75.Kk; see also 67.10.Ba Boson degeneracy in quantum fluids)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 121
• Issue: 4
• Pages: 796-800

Dates

published

2012-04

Contributors

author

T. Zaleski

• Institute of Low Temperature and Structure Research, Polish Academy of Sciences , POB 1410, 50-950 Wrocław 2, Poland

author

T. Kopeć

• Institute of Low Temperature and Structure Research, Polish Academy of Sciences , POB 1410, 50-950 Wrocław 2, Poland

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Identifiers

DOI

10.12693/APhysPolA.121.796