Frequency down-conversion for efficient, low-noise quantum frequency converters

Jan Fabian Geus; Florian Elsen; Sebastian Nyga; Bernd Jungbluth; Hans-Dieter Hoffmann; Constantin Haefner

doi:10.1117/12.2607750

1 March 2022 Frequency down-conversion for efficient, low-noise quantum frequency converters

Jan Fabian Geus, Florian Elsen, Sebastian Nyga, Bernd Jungbluth, Hans-Dieter Hoffmann, Constantin Haefner

Proceedings Volume 12015, Quantum Computing, Communication, and Simulation II; 1201506 (2022) https://doi.org/10.1117/12.2607750
Event: SPIE OPTO, 2022, San Francisco, California, United States

Abstract

We present a novel device for the efficient, low-noise down-conversion of low-power light from the red visible spectrum. It can be applied to interface electronic spin-qubits in nitrogen-vacancy centers in diamond to the telecommunication wavelengths and thus offers the possibility to implement large-scale quantum networks in existing fiber infrastructure. In comparison to state-of-the-art frequency converters for this application, the device presented here generates an overall noise rate, which is one order of magnitude better than current record values. Simultaneously, an internal conversion efficiency of 50 % was measured. Furthermore, the converter serves as a feasibility demonstration of a general concept for the down-conversion of light from the sub-micron spectral range to telecommunication wavelengths.

Conference Presentation

Citation Download Citation

Jan Fabian Geus, Florian Elsen, Sebastian Nyga, Bernd Jungbluth, Hans-Dieter Hoffmann, and Constantin Haefner "Frequency down-conversion for efficient, low-noise quantum frequency converters", Proc. SPIE 12015, Quantum Computing, Communication, and Simulation II, 1201506 (1 March 2022); https://doi.org/10.1117/12.2607750

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