Fluctuation-dissipation relation in a resonantly driven quantum medium.

  title={Fluctuation-dissipation relation in a resonantly driven quantum medium.},
  author={Maria Erukhimova and Mikhail Tokman},
  journal={Optics letters},
  volume={40 12},
Noise associated with the spontaneous emission in a coherently driven medium is calculated. The significant field-induced modification of relation between the noise power and damping constant in a thermal reservoir is obtained. The nonlinear noise exchange between different atomic frequencies leads to violation of standard relations dictated by the fluctuation-dissipation theorem. The developed general method is applied to the EIT system, attractive for realization of different quantum… 
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