Luminescence Spectra of Quantum Dots in Microcavities. I. Bosons

Abstract

We provide a unified theory of luminescence spectra of coupled light-matter systems realized with semiconductor heterostructures in microcavities, encompassing: i) the spontaneous emission case, where the system decays from a prepared (typically pure) initial state, and ii) luminescence in the presence of a continuous, incoherent pump. While the former case has been amply discussed in the literature (albeit mainly for the case of resonance), no consideration has been given to the influence of the incoherent pump. We show how, by provoking a self-consistent quantum state, the pump considerably alters the emission spectra, even at vanishing intensities. The main outcome of our analysis is to unambiguously identify strong-coupling in situations where it appears in disguise or only seems to appear. Here, we consider bosonic matter fields, in which case fully analytical solutions can be obtained. This describes the case of quantum wells or large quantum dots, or the limit of low excitation where the average populations remain much smaller than one.

References in corpus (6)

• Quantum nature of a strongly-coupled single quantum dot-cavity system
• Strong-coupling of quantum dots in microcavities
• Luminescence Spectra of Quantum Dots in Microcavities. II. Fermions
• Influence of Pure Dephasing on Emission Spectra from Single Photon Sources
• Spontaneous emission spectrum of a two-level atom in a very high Q cavity
• Optical spectra of a quantum dot in a microcavity in the nonlinear regime

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