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4 October 2022 Efficient semiconductor quantum light sources at telecom wavelength based on hybrid circular Bragg gratings (Conference Presentation)
Andrea Barbiero
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Proceedings Volume PC12206, Quantum Nanophotonic Materials, Devices, and Systems 2022; PC122060H (2022) https://doi.org/10.1117/12.2632375
Event: SPIE Nanoscience + Engineering, 2022, San Diego, California, United States
Abstract
We fabricate multiple circular Bragg gratings (CBGs) operating in the telecom O-band for Purcell-enhanced single photon emission and investigate the reproducibility with a rigorous characterization. Furthermore, we present a design optimization of CBGs operating around 1550 nm and propose a modified device design directly compatible with electric field control, reporting Purcell factors up to 20 and collection efficiency in NA=0.65 close to 70% for the whole telecom C-band. These results pave the way for the large-scale fabrication of highly efficient semiconductor quantum light sources for long-distance quantum communication systems.
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Andrea Barbiero "Efficient semiconductor quantum light sources at telecom wavelength based on hybrid circular Bragg gratings (Conference Presentation)", Proc. SPIE PC12206, Quantum Nanophotonic Materials, Devices, and Systems 2022, PC122060H (4 October 2022); https://doi.org/10.1117/12.2632375
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KEYWORDS
Semiconductors
Bragg gratings
Light sources
Quantum efficiency
Quantum communications
Quantum dots
Single photon
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