• Chinese Journal of Quantum Electronics
  • Vol. 35, Issue 4, 451 (2018)
Jiaqiang ZHAO*, Lianzhen CAO, Yang YANG, and Huaixin LU
Author Affiliations
  • [in Chinese]
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    DOI: 10.3969/j.issn.1007-5461. 2018.04.011 Cite this Article
    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 Copy Citation Text show less

    Abstract

    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.
    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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