Chinese Optics Letters, 2016, 14 (8): 080201, Published Online: Aug. 3, 2018  

Interfering single photons retreived from collective atomic excitations in two dense cold-atom clouds Download: 817次

Author Affiliations
Department of Physics, East China Normal University, Shanghai 200241, China
Abstract
We report the Hong–Ou–Mandel (HOM) interference, with visibility of 91%, produced from two independent single photons retrieved from collective atomic excitations in two separate cold-atom clouds with high optical depths of 90. The high visibility of the HOM dip is ascribed to the pure single photon in the Fock state that was generated from a dense-cold-atom cloud pumping by a short pulse. The visibility is always the same regardless of the time response of the single-photon detectors. This result experimentally shows that the single photons retrieved are in a separable temporal state with their idler photons.

Rong Cao, Rong Wen, Zhenjie Gu, Zhiguang Han, Peng Qian, Jiefei Chen. Interfering single photons retreived from collective atomic excitations in two dense cold-atom clouds[J]. Chinese Optics Letters, 2016, 14(8): 080201.

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