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A single-photon source is presented using a single quantum dot in an open microcavity. The performance metrics are promising for applications in quantum technology. In particular, the coherence of the photons is high (two-photon interference visbility 98%) and is maintained over long strings of photons. The end-to-end efficiency, the probability of creating a photon at the output of the device's final optical fibre, is above 50%.
Richard J. Warburton
"A low-noise quantum dot in an open microcavity", Proc. SPIE PC12633, Photonics for Quantum 2023, PC126330I (19 July 2023); https://doi.org/10.1117/12.2673625
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Richard J. Warburton, "A low-noise quantum dot in an open microcavity," Proc. SPIE PC12633, Photonics for Quantum 2023, PC126330I (19 July 2023); https://doi.org/10.1117/12.2673625