Density-Matrix approach to a Strongly Coupled Two-Component Bose-Einstein Condensate

Details Density-Matrix approach to a Strongly Coupled Two-Component Bose-Einstein Condensate Density-Matrix approach to a Strongly Coupled Two-Component Bose-Einstein Condensate

1999-11-24

arxiv.org/abs/cond-mat/9911390v2

Physics

Condensed Matter

11 Latex pages, 2 figures (Figure 3 was removed and the text chnaged accordingly)

Scientific paper

10.1103/PhysRevA.62.055602

The time evolution equations for average values of population and relative phase of a strongly coupled two component BEC is derived analytically. The two components are two hyper-fine states coupled by an external laser that drives fast Rabi oscillations between these states. Specifically, this derivation incorporates the two-mode model proposed in [1] for the strongly coupled hyper-fine states of Rb. The fast Rabi cycle is averaged out and rate equations are derived that represents the slow dynamics of the system. These include the collapse and revival of Rabi oscillations and their subsequent dependence on detuning and trap displacement as reported in experiments of [1]. A proposal to create stable vortices is also given.

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