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This research investigates how cavity enhancement impacts the emission rate, purity, and indistinguishability of single photons generated by InAs quantum dots across varying temperatures. The study highlights critical tradeoffs between production speed and photon quality, revealing that quantum carrier-photon correlations significantly correct mean-field predictions at high light-matter coupling strengths. These findings are essential for optimizing deterministic single-photon sources required for scalable quantum communication and computing networks.
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Cavity-QED analysis of InAs quantum-dot single photon production

arXiv1 min read

arXiv:2609.22025v1 Announce Type: new Abstract: Cavity quantum electrodynamics is used to study the extent cavity enhancement affects single photon performance of an InAs quantum dot, in terms of emission rate, purity and indistinguishability at different temperatures. Parametric studies show a tradeoff between single photon production rate and purity, as well as between indistinguishability and purity. The results indicate the importance of quantum carrier-photon correlations that yield substantial corrections to mean-field treatments, especially at high light-matter coupling strength, where cavity enhancement is most effective.

Abstract:Cavity quantum electrodynamics is used to study the extent cavity enhancement affects single photon performance of an InAs quantum dot, in terms of emission rate, purity and indistinguishability at different temperatures. Parametric studies show a tradeoff between single photon production rate and purity, as well as between indistinguishability and purity. The results indicate the importance of quantum carrier-photon correlations that yield substantial corrections to mean-field treatments, especially at high light-matter coupling strength, where cavity enhancement is most effective.

Quantum Physics (quant-ph); Optics (physics.optics)

arXiv:2609.22025 [quant-ph]

(or arXiv:2609.22025v1 [quant-ph] for this version)

https://doi.org/10.48550/arXiv.2609.22025 Focus to learn more arXiv-issued DOI via DataCite (pending registration)

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Full text under the publisher's open licence · 174 words

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