摘要We examine the effects of cross correlated phase fluctuations on the coherent population trapping (CPT) induced by a pair of phase-modulated fields with equal modulation frequencies in a three-level Λ system. The maximal coherence of -0.5, which appears when CPT occurs for equal modulation indices, is preserved in the presence of the critically cross-correlated fluctuations. Unexpectedly, the non-maximal coherence, which is established when CPT is obtained for different modulation indices, is significantly enhanced due to the critically cross-correlated fluctuations.
Abstract：We examine the effects of cross correlated phase fluctuations on the coherent population trapping (CPT) induced by a pair of phase-modulated fields with equal modulation frequencies in a three-level Λ system. The maximal coherence of -0.5, which appears when CPT occurs for equal modulation indices, is preserved in the presence of the critically cross-correlated fluctuations. Unexpectedly, the non-maximal coherence, which is established when CPT is obtained for different modulation indices, is significantly enhanced due to the critically cross-correlated fluctuations.
(Coherent control of atomic interactions with photons)
引用本文:
WANG Jian;HU Xiang-Ming. Coherent Population Trapping Induced by Phase Modulated and Fluctuating Fields[J]. 中国物理快报, 2007, 24(2): 424-427.
WANG Jian, HU Xiang-Ming. Coherent Population Trapping Induced by Phase Modulated and Fluctuating Fields. Chin. Phys. Lett., 2007, 24(2): 424-427.
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2007, Vol. 24 
