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arXiv · 1206.5664

Efficient W state entanglement concentration using quantum-dot and optical microcavities

Yu-Bo Sheng·Lan Zhou·Chuan Wang·Sheng-Mei Zhao
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Abstract

We present an entanglement concentration protocols (ECPs) for less-entangled W state with quantum-dot and microcavity coupled system. The present protocol uses the quantum nondemolition measurement on the spin parity to construct the parity check gate. Different from other ECPs, this less-entangled W state with quantum-dot and microcavity coupled system can be concentrated with the help of some single photons. The whole protocol can be repeated to get a higher success probability. It may be useful in current quantum information processing.

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Yu-Bo Sheng, Lan Zhou, Chuan Wang, Sheng-Mei Zhao. 2012-06-25. Efficient W state entanglement concentration using quantum-dot and optical microcavities. https://doi.org/10.1364/josab.30.000678

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