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arXiv · 1912.10351

Plug&play fibre-coupled 73 kHz single-photon source operating in the telecom O-band

Anna Musial·Kinga Zolnacz·Nicole Srocka·Oleh Kravets·Jan Große·Jacek Olszewski·Krzysztof Poturaj·Grzegorz Wojcik·Pawel Mergo·Kamil Dybka·Mariusz Dyrkacz·Michal Dlubek·Kristian Lauritsen·Andreas Bülter·Philipp-Immanuel Schneider·Lin Zschiedrich·Sven Burger·Sven Rodt·Waclaw Urbanczyk·Grzegorz Sek·Stephan Reitzenstein
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Abstract

A user-friendly fibre-coupled single-photon source operating at telecom wavelengths is a key component of photonic quantum networks providing long-haul ultra-secure data exchange. To take full advantage of quantum-mechanical data protection and to maximize the transmission rate and distance, a true quantum source providing single-photons on demand is highly desirable. We tackle this great challenge by developing a ready to use semiconductor quantum dot (QD)-based device that launches single photons at a wavelength of 1.3 um directly into a single-mode optical fibre. In our approach the QD is deterministically integrated into a nanophotonic structure to ensure efficient on-chip coupling into a fibre. The whole arrangement is integrated into a 19" compatible housing to enable stand-alone operation by cooling via a compact Stirling cryocooler. The realized source delivers single photons with multiphoton events probability as low as 0.15 and single-photon emission rate up to 73 kHz into a standard telecom single-mode fibre.

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Anna Musial, Kinga Zolnacz, Nicole Srocka, Oleh Kravets, Jan Große, Jacek Olszewski, Krzysztof Poturaj, Grzegorz Wojcik, Pawel Mergo, Kamil Dybka, Mariusz Dyrkacz, Michal Dlubek, Kristian Lauritsen, Andreas Bülter, Philipp-Immanuel Schneider, Lin Zschiedrich, Sven Burger, Sven Rodt, Waclaw Urbanczyk, Grzegorz Sek, Stephan Reitzenstein. 2019-12-21. Plug&play fibre-coupled 73 kHz single-photon source operating in the telecom O-band. https://doi.org/10.1002/qute.202000018

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