Chinese Optics Letters, 2009, 7 (11): 1048, Published Online: Nov. 11, 2009
Non-classical correlation between a single photon and the collective spin excited state of a cold atomic ensemble Download: 567次
非经典关联 集体自旋激发态 自发拉曼散射 020.1670 Coherent optical effects 270.1670 Coherent optical effects 270.5585 Quantum information and processing
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.
Xiaosong Lu, Qunfeng Chen, Baosen Shi, Guangcan Guo. Non-classical correlation between a single photon and the collective spin excited state of a cold atomic ensemble[J]. Chinese Optics Letters, 2009, 7(11): 1048.