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Effect of vacuum-induced coherence in a four-level atomic system via quantum interference

Fang Hui-Juan Chen Jun Liu Zheng-Dong Zheng Jun

Effect of vacuum-induced coherence in a four-level atomic system via quantum interference

Fang Hui-Juan, Chen Jun, Liu Zheng-Dong, Zheng Jun
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  • Abstract views:  4326
  • PDF Downloads:  950
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Publishing process
  • Received Date:  03 March 2007
  • Accepted Date:  03 April 2007
  • Published Online:  20 November 2007

Effect of vacuum-induced coherence in a four-level atomic system via quantum interference

  • 1. (1)南昌大学近代物理研究所,南昌 330031; (2)南昌大学近代物理研究所,南昌 330031;广东工业大学实验中心,广州 510090; (3)南昌大学近代物理研究所,南昌 330031;南昌大学纳米技术工程研究中心,南昌 330047; (4)南昌大学纳米技术工程研究中心,南昌 330047

Abstract: In this paper,we report the effects of vacuum-induced coherence in a laser-driven four-level atom consisting of three near-degenerate upper levels having an additional coherence term due to interaction with the vacuum of the radiation field. We show that such coherence preserves the electromagnetically induced transparency and optical bistability phenomena. The dynamical behavior of the population distribution via vacuum-induced coherence was also analyzed numerically.

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