Entanglement distillation using particle statistics

Details Entanglement distillation using particle statistics Entanglement distillation using particle statistics

2005-10-25

arxiv.org/abs/quant-ph/0510189v1

Chin. Phys. Lett. 23, 772(2006).

Physics

Quantum Physics

3 pages, 1 figure

Scientific paper

10.1088/0256-307X/23/4/003

We extend the idea of entanglement concentration for pure states(Phys. Rev. Lett. {\bf 88}, 187903) to the case of mixed states. The scheme works only with particle statistics and local operations, without the need of any other interactions. We show that the maximally entangled state can be distilled out when the initial state is pure, otherwise the entanglement of the final state is less than one. The distillation efficiency is a product of the diagonal elements of the initial state, it takes the maximum 50%, the same as the case for pure states.

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