Interference-exact radiative transfer equation

Publication: Research - peer-reviewJournal article – Annual report year: 2017

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The Purcell effect, i.e., the modification of the spontaneous emission rate by optical interference, profoundly affects the light-matter coupling in optical resonators. Fully describing the optical absorption, emission, and interference of light hence conventionally requires combining the full Maxwell's equations with stochastic or quantum optical source terms accounting for the quantum nature of light. We show that both the nonlocal wave and local particle features associated with interference and emission of propagating fields in stratified geometries can be fully captured by local damping and scattering coefficients derived from the recently introduced quantized fluctuational electrodynamics (QFED) framework. In addition to describing the nonlocal optical interference processes as local directionally resolved effects, this allows reformulating the well known and widely used radiative transfer equation (RTE) as a physically transparent interference-exact model that extends the useful range of computationally efficient and quantum optically accurate interference-aware optical models from simple structures to full optical devices.

Original languageEnglish
Article number11534
JournalScientific Reports
Volume7
Issue number1
Number of pages6
ISSN2045-2322
DOIs
StatePublished - 1 Dec 2017
CitationsWeb of Science® Times Cited: 0
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