Physics

Noiseless single-photon isolator at room temperature

S. Zhang, Y. Zhan, et al.

Discover groundbreaking research by Shicheng Zhang, Yifan Zhan, Shangqing Gong, and Yueping Niu on a noiseless, all-optical isolator utilizing single photons in hot atoms. This innovative device achieves exceptional isolation and low insertion loss, demonstrating remarkable reversibility and robustness—all at room temperature.

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Abstract

This paper presents a room-temperature, noiseless, all-optical isolator using genuine single photons in hot atoms. The isolator achieves low insertion loss (0.6 dB) and high isolation (30.3 dB) with a bandwidth of hundreds of megahertz. Nonreciprocal direction is reversed by tuning the pump laser frequency, showcasing its reversibility and robustness.

Publisher

Communications Physics

Published On

Feb 07, 2023

Authors

Shicheng Zhang, Yifan Zhan, Shangqing Gong, Yueping Niu