Fidelity of a Bose-Einstein Condensate

Details Fidelity of a Bose-Einstein Condensate Fidelity of a Bose-Einstein Condensate

2005-03-02

arxiv.org/abs/cond-mat/0503036v1

Phys. Rev. A 72, 063623 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages and 6 figures

Scientific paper

10.1103/PhysRevA.72.063623

We investigate fidelity, the Loschmidt echo, for a Bose-Einstein Condensate. It is found that the fidelity decays with time in various ways (exponential, Gaussian, and power-law), depending on the choice of initial coherent state as well as the parameters that determine properties of the underlying classical dynamics. Moreover, high fidelity is found for initial states lying in the regular region of a mixed-type phase space. A possible experimental scheme is suggested.

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