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Open Access Publications from the University of California

Frequency-domain stimulated and spontaneous light emission signals at molecular junctions.

  • Author(s): Harbola, Upendra
  • Agarwalla, Bijay Kumar
  • Mukamel, Shaul
  • et al.

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Using a diagrammatic superoperator formalism we calculate optical signals at molecular junctions where a single molecule is coupled to two metal leads which are held at different chemical potentials. The molecule starts in a nonequilibrium steady state whereby it continuously exchanges electrons with the leads with a constant electron flux. Expressions for frequency domain optical signals measured in response to continuous laser fields are derived by expanding the molecular correlation functions in terms of its many-body states. The nonunitary evolution of molecular states is described by the quantum master equation.

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