Quantum Theory of a Bose-Einstein Condensate out of Equilibrium

Details Quantum Theory of a Bose-Einstein Condensate out of Equilibrium Quantum Theory of a Bose-Einstein Condensate out of Equilibrium

2005-01-27

arxiv.org/abs/cond-mat/0501670v1

Optics Communication, 249, 587-593 (2005)

Physics

Condensed Matter

Statistical Mechanics

Accepted for publication in Optics communication

Scientific paper

10.1016/j.optcom.2005.01.048

We consider the interaction between a single-mode quantized perturbing external field and a Bose-Einstein condensate (BEC) out of equilibrium. The usual Rabi type oscillations between the ground and the excited state of the coherent topological modes are observed with a Rabi frequency modified by the two-body atomic interactions. Taking into account the granular structure of the external perturbing field reveals the well know phenomena of collapse and revival of the Rabi oscillations. In particular we find that atomic interactions reduce the Rabi frequency and also affect the collapse and revival sequence.

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