Dual-resonance enhanced quantum light-matter interactions in deterministically coupled quantum-dot-micropillars

Optical microcavities have widely been employed to enhance either the optical excitation or the photon emission processes for boosting light-matter interactions at the nanoscale. When both the excitation and emission processes are simultaneously facilitated by the optical resonances provided by the...

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Veröffentlicht in:Light, science & applications science & applications, 2021-07, Vol.10 (1), p.158-7, Article 158
Hauptverfasser: Liu, Shunfa, Wei, Yuming, Li, Xueshi, Yu, Ying, Liu, Jin, Yu, Siyuan, Wang, Xuehua
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Sprache:eng
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Zusammenfassung:Optical microcavities have widely been employed to enhance either the optical excitation or the photon emission processes for boosting light-matter interactions at the nanoscale. When both the excitation and emission processes are simultaneously facilitated by the optical resonances provided by the microcavities, as referred to the dual-resonance condition in this article, the performances of many nanophotonic devices approach to the optima. In this work, we present versatile accessing of dual-resonance conditions in deterministically coupled quantum-dot (QD)-micropillars, which enables emission from neutral exciton (X)—charged exciton (CX) transition with improved single-photon purity. In addition, the rarely observed up-converted single-photon emission process is achieved under dual-resonance conditions. We further exploit the vectorial nature of the high-order cavity modes to significantly improve the excitation efficiency under the dual-resonance condition. The dual-resonance enhanced light-matter interactions in the quantum regime provide a viable path for developing integrated quantum photonic devices based on cavity quantum electrodynamics (QED) effect, e.g., highly efficient quantum light sources and quantum logical gates.
ISSN:2047-7538
2095-5545
2047-7538
DOI:10.1038/s41377-021-00604-8