Coherence in single photon emission from InAs/InP quantum dots in the telecom C-band

Tina Müller; Matthew Anderson; Joanna Skiba-Szymanska; Jan Huwer; Mark Stevenson; Andrey B. Krysa; Jon Heffernan; Dave Ritchie; Andrew Shields

doi:10.1117/12.2609949

9 March 2022 Coherence in single photon emission from InAs/InP quantum dots in the telecom C-band

Tina Müller, Matthew Anderson, Joanna Skiba-Szymanska, Jan Huwer, Mark Stevenson, Andrey B. Krysa, Jon Heffernan, Dave Ritchie, Andrew Shields

Author Affiliations +

Proceedings Volume PC12015, Quantum Computing, Communication, and Simulation II; PC120150T (2022) https://doi.org/10.1117/12.2609949
Event: SPIE OPTO, 2022, San Francisco, California, United States

Abstract

The ability of individual photonic qubits to interact via interference lies at the heart of many quantum networking applications. For their development, sources of highly coherent, indistinguishable photons are therefore crucial. Here, we investigate the noise sources that affect InAs/InP quantum dots and limit their coherence. We show that the droplet epitaxy growth mode leads to a quiet environment with 96% of exciton transitions having a coherence time above 100 ps, even under non-resonant excitation. Further, Hong–Ou–Mandel interference reveal a corrected two-photon interference visibility of 98.6±1.6% for these quantum dots, showing their potential for quantum networking applications.

Conference Presentation

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Tina Müller, Matthew Anderson, Joanna Skiba-Szymanska, Jan Huwer, Mark Stevenson, Andrey B. Krysa, Jon Heffernan, Dave Ritchie, and Andrew Shields "Coherence in single photon emission from InAs/InP quantum dots in the telecom C-band", Proc. SPIE PC12015, Quantum Computing, Communication, and Simulation II, PC120150T (9 March 2022); https://doi.org/10.1117/12.2609949

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