Analytic expression for the optical exciton transition rates in the polaron frame

Dominic M. Rouse, Erik M. Gauger, Brendon W. Lovett

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)
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When an optical emitter is strongly coupled to a vibrational bath the polaron transformation is often used to permit an accurate second-order Redfield master equation. However, the optical transition rates in the polaron frame are not analytic and approximations typically need to be made which result in the loss of anything other than simple additive effects of the two baths. In this paper, we derive an intuitive analytic expression for the polaron frame optical transition rates by means of a finite mode truncation of the vibrational bath. Using this technique, calculations of the transition rates converge for only a few modes in the truncated spectral density, and capture non-additive effects such as population inversion of a two-level system.
Original languageEnglish
Article number014302
JournalPhysical Review B
Issue number1
Publication statusPublished - 7 Jan 2022


  • quant-ph
  • physics.optics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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