Abstract

We experimentally establish a non-classical correlation between a single Stokes photon and the collective spin excited state of a cold atomic ensemble by using a spontaneous Raman scattering process. The correlation between them can be proved by transferring the spin excited state of the atomic ensemble into an anti-Stokes photon and checking the Cauchy-Schwarz inequality between the Stokes and the anti-Stokes photons. The non-classical correlation can be kept for at least 300 ns.

© 2009 Chinese Optics Letters

Non-degenerate nonclassical photon pairs in a hot atomic ensemble

Qun-Feng Chen, Bao-Sen Shi, Min Feng, Yong-Sheng Zhang, and Guang-Can Guo
Opt. Express 16(26) 21708-21713 (2008)

Generation of non-classical correlated photon pairs via a ladder-type atomic configuration: theory and experiment

Dong-Sheng Ding, Zhi-Yuan Zhou, Bao-Sen Shi, Xu-Bo Zou, and Guang-Can Guo
Opt. Express 20(10) 11433-11444 (2012)

Quantum noise of cold atomic spins illuminated with non-classical light

J. Hald, J. L. Sørensen, L. Leich, and E. S. Polzik
Opt. Express 2(3) 93-99 (1998)

Experimental realization of narrowband four-photon Greenberger–Horne–Zeilinger state in a single cold atomic ensemble

Ming-Xin Dong, Wei Zhang, Zhi-Bo Hou, Yi-Chen Yu, Shuai Shi, Dong-Sheng Ding, and Bao-Sen Shi
Opt. Lett. 42(22) 4691-4694 (2017)

Generation of entanglement between a highly wave-packet-tunable photon and a spin-wave memory in cold atoms

Ya Li, Yafei Wen, Shengzhi Wang, Chao Liu, Hailong Liu, Minjie Wang, Can Sun, Yan Gao, Shujing Li, and Hai Wang
Opt. Express 30(2) 2792-2802 (2022)