Decoherence induced by a fluctuating Aharonov-Casher phase

Details Decoherence induced by a fluctuating Aharonov-Casher phase Decoherence induced by a fluctuating Aharonov-Casher phase

2005-08-22

arxiv.org/abs/quant-ph/0508157v1

Physics

Quantum Physics

13 pages, 3 figures. To appear in Phys. Rev. A

Scientific paper

Dipoles interference is studied when atomic systems are coupled to classical electromagnetic fields. The interaction between the dipoles and the classical fields induces a time-varying Aharonov-Casher phase. Averaging over the phase generates a suppression of fringe visibility in the interference pattern. We show that, for suitable experimental conditions, the loss of contrast for dipoles can be observable and almost as large as the corresponding one for coherent electrons. We analyze different trajectories in order to show the dependence of the decoherence factor with the velocity of the particles.

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