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arXiv · 1509.03159

Simultaneous generation of two spin-wave-photon entangled states in an atomic ensemble

Yuelong Wu·Long Tian·Zhongxiao Xu·Wei Ge·Lirong Chen·Shujing Li·Haoxiang Yuan·Yafei Wen·Hai Wang·Changde Xie·Kunchi Peng
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Abstract

The generation and storage of entangled photons play important roles in quantum information technique. Spontaneous Raman scattering (SRS) in atomic ensembles provides a promising method to generate entangled photons capable of storage. In the past experiments, a spin-wave-photon entangled state is produced via SRS in an atomic ensemble, with which a pair of entangled photons is obtained. Here, we report a scheme of simultaneously generating two spin-wave-photon entangled states in an atomic ensemble by collecting Stokes photons at two different directions. Based on the obtained two atom-photon entangled sources, we generate a three-photon GHZ polarization-entangled state and conditionally prepare a polarization-entangled photon pair, respectively.

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Yuelong Wu, Long Tian, Zhongxiao Xu, Wei Ge, Lirong Chen, Shujing Li, Haoxiang Yuan, Yafei Wen, Hai Wang, Changde Xie, Kunchi Peng. 2015-09-10. Simultaneous generation of two spin-wave-photon entangled states in an atomic ensemble. https://doi.org/10.1103/physreva.93.052327

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