Measurement of the efficiency of a bright quantum-dot-based single-photon source

Nadia O. Antoniadis; Natasha Tomm; Alisa Javadi; Rüdiger Schott; Sascha R. Valentin; Andreas D. Wieck; Arne Ludwig; Richard J. Warburton

doi:10.1117/12.2657247

8 March 2023 Measurement of the efficiency of a bright quantum-dot-based single-photon source

Nadia O. Antoniadis, Natasha Tomm, Alisa Javadi, Rüdiger Schott, Sascha R. Valentin, Andreas D. Wieck, Arne Ludwig, Richard J. Warburton

Author Affiliations +

Proceedings Volume 12446, Quantum Computing, Communication, and Simulation III; 124460S (2023) https://doi.org/10.1117/12.2657247
Event: SPIE Quantum West, 2023, San Francisco, California, United States

Abstract

A single-photon source has been developed using a single quantum dot to mimic a two-level atom. Low noise is achieved by operation at low temperature, the use of very high quality material, and by embedding the quantum dots in a diode structure. A single quantum dot is tuned into resonance with an open microcavity, a highly miniaturised Fabry-Perot cavity. The Purcell factor is approximately ten resulting in a radiative lifetime of just 50 ps. An end-to-end efficiency of above 50% is achieved and the photons exhibit two-photon interference with a visibility of 98%.

Conference Presentation

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Nadia O. Antoniadis, Natasha Tomm, Alisa Javadi, Rüdiger Schott, Sascha R. Valentin, Andreas D. Wieck, Arne Ludwig, and Richard J. Warburton "Measurement of the efficiency of a bright quantum-dot-based single-photon source", Proc. SPIE 12446, Quantum Computing, Communication, and Simulation III, 124460S (8 March 2023); https://doi.org/10.1117/12.2657247

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