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Entanglement distillation for W class states

Zhuo-Liang Cao·Ming Yang
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Abstract

In this paper, we first propose a general entanglement distillation protocol for three-particle W class state, which can concentrate the state (non-maximally entangled W state). The general protocol is mainly based on the unitary transformations on the auxiliary particles and the entangled particles, and a feasible physical scheme is suggested based on the cavity QED techniques. The protocol and scheme can be extended to the entanglement concentration of N-particle case.

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Zhuo-Liang Cao, Ming Yang. 2003-07-17. Entanglement distillation for W class states. https://doi.org/10.1016/j.physa.2004.02.016

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