Purification of entangled coherent states

Details Purification of entangled coherent states Purification of entangled coherent states

2001-11-02

arxiv.org/abs/quant-ph/0111015v2

Quantum Information and Computation, Vol.2, No.3, 208-221 (2002)

Physics

Quantum Physics

14 pages, 3 figures. The content has been modified

Scientific paper

We suggest an entanglement purification scheme for mixed entangled coherent states using 50-50 beam splitters and photodetectors. This scheme is directly applicable for mixed entangled coherent states of the Werner type, and can be useful for general mixed states using additional nonlinear interactions. We apply our scheme to entangled coherent states decohered in a vacuum environment and find the decay time until which they can be purified.

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