Waveguide-QED-based measurement of a reservoir spectral density

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11 Citazioni (Scopus)


The spectral density (SD) function has a central role in the study of open quantum systems (OQSs). We discover a method allowing for a "static" measurement of the SD - i.e., it requires neither the OQS to be initially excited nor its time evolution tracked in time - which is not limited to the weak-coupling regime. This is achieved through one-dimensional photon scattering for a zero-temperature reservoir coupled to a two-level OQS via the rotating wave approximation. We find that the SD profile is a universal simple function of the photon's reflectance and transmittance. As such, it can be straightforwardly inferred from the photon's reflection and transmission spectra.
Lingua originaleEnglish
Numero di pagine6
Stato di pubblicazionePublished - 2015

All Science Journal Classification (ASJC) codes

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