Chinese Journal of Quantum Electronics, Volume. 35, Issue 4, 451(2018)

Nonlocality and robustness in two-photon entangled system

Jiaqiang ZHAO*... Lianzhen CAO, Yang YANG and Huaixin LU |Show fewer author(s)
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    A high quality polarized two-photon entangled state is prepared by using the method of II type parametric down conversion and polarization post selection of nonlinear crystals. The violation of Clauser-Horne-Shimony-Holt (CHSH) and Cavalcanti-Bell (C-B) inequalities to the local realism are experimentally measured in two-photon entangled system, and the values of CHSH, C-B inequalities, 2.64±0.021 and 2.75±0.019, are obtained respectively. The bit flip noise in quantum channels is simulated by linear optical devices, and the robustness of CHSH-type inequality in bit-flipping noise environment is experimentally investigated. Results show that C-B inequality is more robust to noise than CHSH inequality in bit-flipping noise environment, which provides experimental support for further investigating the application of entanglement in quantum information processing.

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    ZHAO Jiaqiang, CAO Lianzhen, YANG Yang, LU Huaixin. Nonlocality and robustness in two-photon entangled system[J]. Chinese Journal of Quantum Electronics, 2018, 35(4): 451

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    Paper Information

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    Received: Dec. 26, 2017

    Accepted: --

    Published Online: Aug. 24, 2018

    The Author Email: Jiaqiang ZHAO (zhaojiaqiang@wfu.edu.cn)

    DOI:10.3969/j.issn.1007-5461. 2018.04.011

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