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17 March 2023 Continuously graded CdSe quantum dots: Tomorrow’s bright single photon emitters
Christopher B. Marble, Donghyo Hahm, Zachary L. Robinson, Vladislav V. Yakovlev, Victor I. Klimov
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Proceedings Volume PC12410, Nanoscale and Quantum Materials: From Synthesis and Laser Processing to Applications 2023; PC1241008 (2023) https://doi.org/10.1117/12.2657537
Event: SPIE LASE, 2023, San Francisco, California, United States
Abstract
Single photon emitters (SPE) are essential building blocks for proposed quantum technologies. An ideal SPE emits only one photon at a time and the photons are indistinguishable. CdSe core/shell quantum dots (QDs) provide a physical system that approximates a SPE. We discuss progress to improve the SPE properties of CdSe QDs. We present synthesis and spectroscopic analysis of wurtzite-CdSe/CdS, mixed shell CdSe/Cd_0.5Zn_0.5S, and continuously graded CdSe/Cd_xZn_1-xSe/ZnSe_yS_1-y QDs. We compare their behaviors at room and cryogenic temperatures using photoluminescence spectroscopy, Michelson interferometry, and Hanbury Brown and Twiss interferometry. We also address efforts to mitigate undesirable behaviors observed in QDs such as charging.
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Christopher B. Marble, Donghyo Hahm, Zachary L. Robinson, Vladislav V. Yakovlev, and Victor I. Klimov "Continuously graded CdSe quantum dots: Tomorrow’s bright single photon emitters", Proc. SPIE PC12410, Nanoscale and Quantum Materials: From Synthesis and Laser Processing to Applications 2023, PC1241008 (17 March 2023); https://doi.org/10.1117/12.2657537
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KEYWORDS
Quantum dots
Single photon
Interferometry
Pulsed laser operation
Spectroscopy
Optical testing
Oxidation
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