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We present a novel turn-key portable fiber laser for efficient quantum dot excitation to generate single photons. The laser combines a mode-hop-free and alignment-free tunability between 770 nm to 980 nm with a high pulse-to-pulse coherence of 98%. Second order correlation measurements demonstrate a high single photon purity. The laser shows long-term power stability with a standard deviation of less than 0.3% and wavelength stability of better than 5 pm. This development constitutes an essential step for advancing single-photon sources based on quantum dots in terms of integrability and ease of use for research applications and commercial quantum computing.
Niklas M. Lüpken,Maximilian Brinkmann,Sven Dobner, andTim Hellwig
"High-brightness narrowband tunable fiber laser for quantum dot excitation", Proc. SPIE PC12446, Quantum Computing, Communication, and Simulation III, PC124460X (9 March 2023); https://doi.org/10.1117/12.2649826
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Niklas M. Lüpken, Maximilian Brinkmann, Sven Dobner, Tim Hellwig, "High-brightness narrowband tunable fiber laser for quantum dot excitation," Proc. SPIE PC12446, Quantum Computing, Communication, and Simulation III, PC124460X (9 March 2023); https://doi.org/10.1117/12.2649826