Background atoms and decoherence in optical lattices
Source: Phys. Rev. A 81, 013620 (2010); doi:10.1103/PhysRevA.81.013620
Published 20 January 2010
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Entanglement and decoherence in Bose-Einstein condensates - YEAR: 2010
PUBLICATION DATA
APS
Krzysztof Paw
owski1 and Kazimierz Rzą
ewski1,2
1Center for Theoretical Physics, Polish Academy of Sciences, Al. Lotników 32/46, PL-02-668 Warsaw, Poland
2Faculty of Mathematics and Sciences, Cardinal Stefan Wyszyński University, ul. Dewajtis 5, PL-01-815, Warsaw, Poland
owski1 and Kazimierz Rząewski1,21Center for Theoretical Physics, Polish Academy of Sciences, Al. Lotników 32/46, PL-02-668 Warsaw, Poland
2Faculty of Mathematics and Sciences, Cardinal Stefan Wyszyński University, ul. Dewajtis 5, PL-01-815, Warsaw, Poland
All experiments with ultracold atoms are performed in the presence of background residual gas. With the help of a suitable master equation we investigate a role of these fast atoms on the loss of coherence in optical lattices. We present an exact solution of the master equation and give the analytic formulas for all correlation functions in the presence of one-body losses. Additionally we discuss the existence of a Schrödinger cat state predicted in this system in Greiner et al. [Nature 419, 51 (2002)].
©2010 The American Physical Society
| History: | Received 11 September 2009; published 20 January 2010 |
| Permalink: |
http://link.aps.org/abstract/PRA/v81/e013620 |
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