The role of phonon scattering in the indistinguishability of photons emitted from semiconductor cavity QED systems

Per Kær Nielsen, Niels Gregersen, Jesper Mørk

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Abstract

A solid-state single-photon source emitting indistinguishable photons on-demand is an essential component of linear optics quantum computing schemes. However, the emitter will inevitably interact with the solid-state environment causing decoherence and loss of indistinguishability. In this paper, we present a comprehensive theoretical treatment of the influence of phonon scattering on the coherence properties of single photons emitted from semiconductor quantum dots. We model decoherence using a full microscopic theory and compare with standard Markovian approximations employing Lindblad-type relaxation terms. Significant differences between the two approaches are found.
Original languageEnglish
JournalNew Journal of Physics
Volume15
Issue number3
Pages (from-to)035027
Number of pages25
ISSN1367-2630
DOIs
Publication statusPublished - 2013

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