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  • Received: Mar. 31, 2018

    Accepted: Jun. 6, 2018

    Posted: Jan. 17, 2019

    Published Online: Aug. 2, 2018

    The Author Email: Hong Gao (honggao@xjtu.edu.cn)

    DOI: 10.3788/COL201816.082701

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    Chengyuan Wang, Yan Gu, Ya Yu, Dong Wei, Pei Zhang, Hong Gao, Fuli Li. Efficient generation of non-classical photon pairs in a hot atomic ensemble[J]. Chinese Optics Letters, 2018, 16(8): 082701

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Chinese Optics Letters, Vol. 16, Issue 8, 082701 (2018)

Efficient generation of non-classical photon pairs in a hot atomic ensemble

Chengyuan Wang, Yan Gu, Ya Yu, Dong Wei, Pei Zhang, Hong Gao*, and Fuli Li

Author Affiliations

  • Shaanxi Key Laboratory of Quantum Information and Quantum Optoelectronic Devices, School of Science, Xi'an Jiaotong University, Xi'an 710049, China

Abstract

We demonstrate the generation of non-classical photon pairs in a warm Rb87 atomic vapor cell with no buffer gas or polarization preserving coatings via spontaneous four-wave mixing. We obtain the photon pairs with a 1/e correlation time of 40 ns and the violation of Cauchy–Schwartz inequality by a factor of 23±3. This provides a convenient and efficient method to generate photon pair sources based on an atomic ensemble.