Evolution of the macroscopically entangled states in optical lattices

Details Evolution of the macroscopically entangled states in optical lattices Evolution of the macroscopically entangled states in optical lattices

2003-03-30

arxiv.org/abs/cond-mat/0303629v3

Phys. Rev. A, 68 (3), 033609 (2003)

Physics

Condensed Matter

Statistical Mechanics

14 pages, 10 figures, Discussion of reversibility of entanglement is added

Scientific paper

10.1103/PhysRevA.68.033609

We consider dynamics of boson condensates in finite optical lattices under a slow external perturbation which brings the system to the unstable equilibrium. It is shown that quantum fluctuations drive the condensate into the maximally entangled state. We argue that the truncated Wigner approximation being a natural generalization of the Gross-Pitaevskii classical equations of motion is adequate to correctly describe the time evolution including both collapse and revival of the condensate.

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