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Plug and Play Fiber-Coupled 73 kHz Single-Photon Source Operating in the Telecom O-Band
Citation key 2020_05_Musial
Author Musiał, Anna and Żołnacz, Kinga and Srocka, Nicole and Kravets, Oleh and Große, Jan and Olszewski, Jacek and Poturaj, Krzysztof and Wójcik, Grzegorz and Mergo, Paweł and Dybka, Kamil and Dyrkacz, Mariusz and Dłubek, Michał and Lauritsen, Kristian and Bülter, Andreas and Schneider, Philipp-Immanuel and Zschiedrich, Lin and Burger, Sven and Rodt, Sven and Urbańczyk, Wacław and Sęk, Grzegorz and Reitzenstein, Stephan
Pages 2000018
Year 2020
DOI 10.1002/qute.202000018
Journal Advanced Quantum Technologies
Month May
How Published 1912.10351
Abstract Abstract A user-friendly, fiber-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. This great challenge is tackled by developing a ready-to-use semiconductor quantum-dot-based device that launches single photons at a wavelength of 1.3 µm directly into a single-mode optical fiber. In the proposed approach, the quantum dot is deterministically integrated into a nanophotonic structure to ensure efficient on-chip coupling into a fiber. The whole arrangement is integrated into a 19ʺ compatible housing to enable stand-alone operation by cooling via a compact Stirling cryocooler. The realized source delivers single photons with a multiphoton events probability as low as 0.15 and a single-photon emission rate of up to 73 kHz into a standard telecom single-mode fiber.
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