Hybrid entanglement concentration using quantum dot and microcavity coupled system

Authors:
Chuan Wang;Cong Cao;Ling-Yan He;Chuan-Lin Zhang
Affiliations:
State Key Laboratory of Information Photonics and Optical Communications, School of Science, Beijing University of Posts and Telecommunications, Beijing, China 100876;School of Science, Beijing University of Posts and Telecommunications, Beijing, China 100876;School of Science, Beijing University of Posts and Telecommunications, Beijing, China 100876;School of Science, Beijing University of Posts and Telecommunications, Beijing, China 100876
Venue:
Quantum Information Processing
Year:
2014

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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.