Effect of cavity photons on the generation of multi-particle entanglement

Details Effect of cavity photons on the generation of multi-particle entanglement Effect of cavity photons on the generation of multi-particle entanglement

2005-01-23

arxiv.org/abs/quant-ph/0501128v2

Physics

Quantum Physics

4 pages, 2 figures

Scientific paper

A study on the cause of the multi-particle entanglement is presented in this work. We investigate how dot-like single quantum well excitons, which are independently coupled through a single microcavity mode, evolve into maximally entangled state as a series of conditional measurements are taken on the cavity field state. We first show how cavity photon affects the entanglement purity of the double-exciton Bell state and the triple-exciton W state. Generalization to multi-excitons W states is then derived analytically. Our results pave the way for studying the crucial cause of multi-particle collective effect.

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