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arXiv · 1809.00117

Entanglement purification of nonlocal quantum-dot-confined electrons assisted by double-sided optical microcavities

Zi-Chao Liu·Jian-Song Hong·Jia-Jie Guo·Tao Li·Qing Ai·Ahmed Alsaedi·Tasawar Hayat·Fu-Guo Deng
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Abstract

We present a nondestructive parity-check detector (PCD) scheme for two single-electron quantum dots embedded in double-sided optical microcavities. Using a polarization-entangled photon pair, the PCD works in a parallel style and is robust to the phase fluctuation of the optical path length. In addition, we present an economic entanglement purification protocol for electron pairs with our nondestructive PCD. The parties in quantum communication can increase the purification efficiency and simultaneously decrease the quantum source consumed for some particular fidelity thresholds. Therefore, our protocol has good applications in the future quantum communication and distributed quantum networks.

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Zi-Chao Liu, Jian-Song Hong, Jia-Jie Guo, Tao Li, Qing Ai, Ahmed Alsaedi, Tasawar Hayat, Fu-Guo Deng. 2018-09-01. Entanglement purification of nonlocal quantum-dot-confined electrons assisted by double-sided optical microcavities. https://doi.org/10.1002/andp.201800029

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