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Efficient fiber coupling of telecom single-photons from circular Bragg gratings
Nam Tran, Pavel Ruchka, Sara Jakovljevic, Benjamin Breiholz, Peter Gier{\ss}, Ponraj Vijayan, Carlos Eduardo Jimenez, Alois Herkommer, Michael Jetter, Simone Luca Portalupi, Harald Giessen, Peter Michler
https://arxiv.org/abs/2506.01661

Efficient fiber coupling of telecom single-photons from circular Bragg gratings
Deterministic sources of quantum light are becoming increasingly relevant in the development of quantum communication, particularly in deployed fiber networks. Therefore, efficient fiber-coupled sources at telecom wavelength are highly sought after. With this goal in mind, we systematically investigate the fiber coupling performance of quantum dots in optical resonators under three experimental configurations. We quantify coupling efficiency and sensitivity to spatial displacement for single-mo…