Details

Autor(en) / Beteiligte

• Finkelstein-Shapiro, Daniel
• Urdaneta, Ines
• Calatayud, Monica
• Atabek, Osman
• Mujica, Vladimiro
• Keller, Arne

Titel

Fano-Liouville spectral signatures in open quantum systems

Ist Teil von

• Physical review letters, 2015-09, Vol.115 (11), p.113006-113006, Article 113006

Ort / Verlag

United States

Erscheinungsjahr

2015

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• 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.