Physics

One-hour coherent optical storage in an atomic frequency comb memory

Y. Ma, Y. Ma, et al.

This remarkable research, conducted by Yu Ma, You-Zhi Ma, Zong-Quan Zhou, Chuan-Feng Li, and Guang-Can Guo, showcases the ability to store light coherently in an atomic frequency comb memory for over an hour. This groundbreaking achievement significantly outstrips previous records and holds promise for the future of large-scale quantum communication.

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Abstract

Long-distance quantum information distribution is hindered by photon loss in optical fibers. While quantum repeaters are proposed as a solution, their complexity limits communication distance. This paper demonstrates coherent storage of light in an atomic frequency comb memory for over one hour using a zero-first-order-Zeeman magnetic field and dynamical decoupling, significantly exceeding previous records (~1 minute). This breakthrough paves the way for large-scale quantum communication using long-lived solid-state quantum memories.

Publisher

Nature Communications

Published On

Apr 22, 2021

Authors

Yu Ma, You-Zhi Ma, Zong-Quan Zhou, Chuan-Feng Li, Guang-Can Guo