title: Fano-Liouville spectral signatures in open quantum systems.
abstract: The scattering amplitude from a set of discrete states coupled to a continuum became known as the Fano profile, characteristic for its asymmetric line shape and originally investigated in the context of photoionization. The generality of the model and the proliferation of engineered nanostructures with confined states gives immense success to the Fano line shape, which is invoked whenever an asymmetric line shape is encountered. However, many of these systems do not conform to the initial model worked out by Fano in that (i) they are subject to dissipative processes and (ii) the observables are not entirely analogous to the ones measured in the original photoionization experiments. In this Letter, we work out the full optical response of a Fano model with dissipation. We find that the exact result for the excited population, Raman, Rayleigh, and fluorescence emission is a modified Fano profile where the typical line shape has an additional Lorentzian contribution. Expressions to extract model parameters from a set of relevant observables are given.
authors.affiliation: Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85282, USA.|Sorbonne Universités, UPMC Université Paris 06, UMR 7616, Laboratoire de Chimie Théorique, F-75005 Paris, France.|CNRS, UMR 7616, Laboratoire de Chimie Théorique, F-75005 Paris, France.
authors.forename: Daniel
authors.initials: D
authors.lastname: Finkelstein-Shapiro
authors.affiliation: Sorbonne Universités, UPMC Université Paris 06, UMR 7616, Laboratoire de Chimie Théorique, F-75005 Paris, France.|CNRS, UMR 7616, Laboratoire de Chimie Théorique, F-75005 Paris, France.|Institut des Sciences Moléculaires d'Orsay, Bâtiment 350, UMR8214, CNRS-Université Paris-Sud, 91405 Orsay, France.
authors.forename: Ines
authors.initials: I
authors.lastname: Urdaneta
authors.affiliation: Sorbonne Universités, UPMC Université Paris 06, UMR 7616, Laboratoire de Chimie Théorique, F-75005 Paris, France.|CNRS, UMR 7616, Laboratoire de Chimie Théorique, F-75005 Paris, France.|Institut Universitaire de France, France.
authors.forename: Monica
authors.initials: M
authors.lastname: Calatayud
authors.affiliation: Institut des Sciences Moléculaires d'Orsay, Bâtiment 350, UMR8214, CNRS-Université Paris-Sud, 91405 Orsay, France.
authors.forename: Osman
authors.initials: O
authors.lastname: Atabek
authors.affiliation: Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85282, USA.
authors.forename: Vladimiro
authors.initials: V
authors.lastname: Mujica
authors.affiliation: Institut des Sciences Moléculaires d'Orsay, Bâtiment 350, UMR8214, CNRS-Université Paris-Sud, 91405 Orsay, France.
authors.forename: Arne
authors.initials: A
authors.lastname: Keller