title: Frequency-domain stimulated and spontaneous light emission signals at molecular junctions.
abstract: 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.
authors.affiliation: Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India.
authors.forename: Upendra
authors.initials: U
authors.lastname: Harbola
authors.affiliation: Department of Chemistry, University of California, Irvine, California 92697, USA.
authors.forename: Bijay Kumar
authors.initials: BK
authors.lastname: Agarwalla
authors.affiliation: Department of Chemistry, University of California, Irvine, California 92697, USA.
authors.forename: Shaul
authors.initials: S
authors.lastname: Mukamel