Thermal emission in the ultrastrong-coupling regime

Alessandro Ridolfo, M. Leib, S. Savasta, Michael J. Hartmann

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


We have studied the thermal emission of a cavity quantum electrodynamic system in the ultrastrong-coupling regime, where the atom-cavity coupling rate becomes comparable with the cavity resonance frequency. In this regime, the standard descriptions of photodetection and dissipation fail. By following an approach that was recently put forward by Ridolfo et al (2012 Phys. Rev. Lett. 109 193602), we were able to calculate the emission of systems with arbitrary strength of light-matter interaction, by expressing the electric-field operator in the cavity-emitter dressed basis. In this paper, we present thermal photoluminescence spectra, calculated for given temperatures and for different couplings, in particular, for available circuit quantum electrodynamics parameters.

Original languageEnglish
Article number014053
JournalPhysica Scripta
Issue numberT153
Publication statusPublished - 28 Mar 2013

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Mathematical Physics
  • Condensed Matter Physics


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