Efficient entanglement concentration for partially entangled electrons using a quantum-dot and microcavity coupled system

被引：85

作者：

Wang, Chuan ^{[1
,2
]}

机构：

[1] Beijing Univ Posts & Telecommun, Sch Sci, Beijing 100876, Peoples R China

[2] Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China

来源：

PHYSICAL REVIEW A | 2012年 / 86卷 / 01期

关键词：

Particle beams - Spin dynamics - Electrons - Quantum entanglement - Magnetic moments - Electrospinning - Nanocrystals - Semiconductor quantum dots;

D O I：

10.1103/PhysRevA.86.012323

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present an efficient entanglement concentration protocol (ECP) for electron spins based on quantum-dot and microcavity coupled systems. In our ECP, each two-electron spin system in a partially entangled state can be concentrated with the assistance of an ancillary quantum dot and a single photon, not two copies of two-electron spin systems. With current and near-future technology, the locally maximal entanglement of electron spins can be achieved, and our ECP can be used in long-distance quantum communications.

引用

页数：5

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