Coherent Population Trapping Induced by Phase Modulated and Fluctuating Fields

  • Received Date: September 07, 2006
  • Published Date: January 31, 2007
  • 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.
  • Article Text

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