Quantum noise of a Bose-Einstein condensate in an optical cavity, correlations and entanglement

Details Quantum noise of a Bose-Einstein condensate in an optical cavity, correlations and entanglement Quantum noise of a Bose-Einstein condensate in an optical cavity, correlations and entanglement

2010-01-12

arxiv.org/abs/1001.1818v2

Phys. Rev. A 81, 043639 (2010)

Physics

Quantum Physics

15 pages, 8 figures, extended discussion on experimental connections

Scientific paper

10.1103/PhysRevA.81.043639

A Bose-Einstein condensate of ultracold atoms inside the field of a laser-driven optical cavity exhibits dispersive optical bistability. We describe this system by using mean-field approximation and by analyzing the correlation functions of the linearized quantum fluctuations around the mean-field solution. The entanglement and the statistics of the atom-field quadratures are given in the stationary state. It is shown that the mean-field solution, i.e. the Bose-Einstein condensate is robust against entanglement generation for most part of the phase diagram.

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