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Emission spectra and quantum efficiency of single-photon sources in the cavity-QED strong-coupling regime

Guoqiang Cui·M. G. Raymer
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Abstract

We derive analytical formulas for the forward emission and side emission spectra of cavity-modified single-photon sources, as well as the corresponding normal-mode oscillations in the cavity quantum electrodynamics (QED) strong-coupling regime. We investigate the effects of pure dephasing, treated in the phase-diffusion model based on a Wiener-Levy process, on the emission spectra and normal-mode oscillations. We also extend our previous calculation of quantum efficiency to include the pure dephasing process. All results are obtained in the Weisskopf-Wigner approximation for an impulse-excited emitter. We find that the spectra are broadened, the depths of the normal-mode oscillations are reduced and the quantum efficiency is decreased in the presence of pure dephasing.

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Guoqiang Cui, M. G. Raymer. 2008-10-30. Emission spectra and quantum efficiency of single-photon sources in the cavity-QED strong-coupling regime. https://doi.org/10.1103/physreva.73.053807

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