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Hybrid entanglement concentration using quantum dot and microcavity coupled system

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Abstract

We present two hybrid entanglement concentration protocols based on quantum dots (QDs) and optical microcavity coupled systems. The system is theoretically analyzed and used for photon and electron hybrid entanglement generation. Also, the proposed system can be further used for parity check that allows a quantum nondemolition measurement on the spin parity. By performing parity check process on electron spins, the entangled state can be concentrated into maximally entangled state efficiently.

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Acknowledgments

This work is supported by the National Fundamental Research Program Grant No. 2010CB923202, China National Natural Science Foundation Grant No. 61205117, Beijing Higher Education Young Elite Teacher Project No. YETP0456 and the Open Research Fund Program of the State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University Grant No. KF201301.

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Authors and Affiliations

  1. State Key Laboratory of Information Photonics and Optical Communications, School of Science, Beijing University of Posts and Telecommunications, Beijing, 100876, China

    Chuan Wang

  2. School of Science, Beijing University of Posts and Telecommunications, Beijing, 100876, China

    Cong Cao, Ling-yan He & Chuan-lin Zhang

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  1. Chuan Wang
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  2. Cong Cao
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  3. Ling-yan He
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  4. Chuan-lin Zhang
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Correspondence to Chuan Wang.

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Wang, C., Cao, C., He, Ly. et al. Hybrid entanglement concentration using quantum dot and microcavity coupled system. Quantum Inf Process 13, 1025–1034 (2014). https://doi.org/10.1007/s11128-013-0707-5

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