Spectral compression of narrowband single photons

Xi Jie Yeo; Christian Kurtsiefer; Mathias A. Seidler; Alessandro Cerè

doi:10.1117/12.2594687

1 August 2021 Spectral compression of narrowband single photons

Xi Jie Yeo, Christian Kurtsiefer, Mathias A. Seidler, Alessandro Cerè

Proceedings Volume 11798, Optical Trapping and Optical Micromanipulation XVIII; 117982I (2021) https://doi.org/10.1117/12.2594687
Event: SPIE Nanoscience + Engineering, 2021, San Diego, California, United States

Conference Poster

Abstract

We report an experimental demonstration of spectral compression performed on heralded 795 nm single photons with narrow spectral bandwidths about 3 times larger than the corresponding atomic transitions, generated through four-wave mixing in cold Rubidium-87 atoms. This scheme uses an asymmetric cavity as a dispersion medium to spread out the photon temporally, and subsequently a phase modulator, to modify the spectral energy distribution of the photons. The spectral bandwidth of the photons was compressed by a factor of 2.6, from 20.6 MHz to less than 8 MHz, almost matching the corresponding atomic transition linewidth of 6 MHz. The spectral compression scheme can potentially be adapted to a wide range of wavelengths and spectral widths.

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Xi Jie Yeo, Christian Kurtsiefer, Mathias A. Seidler, and Alessandro Cerè "Spectral compression of narrowband single photons", Proc. SPIE 11798, Optical Trapping and Optical Micromanipulation XVIII, 117982I (1 August 2021); https://doi.org/10.1117/12.2594687

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