Highly Efficient Coherent Optical Memory Based on Electromagnetically Induced Transparency

Physical Review Letters
Ya-Fen HsiaoYing-Cheng Chen

Abstract

Quantum memory is an important component in the long-distance quantum communication based on the quantum repeater protocol. To outperform the direct transmission of photons with quantum repeaters, it is crucial to develop quantum memories with high fidelity, high efficiency and a long storage time. Here, we achieve a storage efficiency of 92.0 (1.5)% for a coherent optical memory based on the electromagnetically induced transparency scheme in optically dense cold atomic media. We also obtain a useful time-bandwidth product of 1200, considering only storage where the retrieval efficiency remains above 50%. Both are the best record to date in all kinds of schemes for the realization of optical memory. Our work significantly advances the pursuit of a high-performance optical memory and should have important applications in quantum information science.

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Citations

Jul 28, 2019·Physical Review Letters·Rong WenWeiping Zhang
Mar 4, 2020·Optics Express·Thorsten PetersThomas Halfmann
Jan 13, 2019·Nature Communications·Jinxian GuoWeiping Zhang
Mar 2, 2019·Physical Review Letters·Michał ParniakWojciech Wasilewski
Oct 2, 2019·Physical Review Letters·Mohammadsadegh KhazaliThomas Pohl
Jul 18, 2018·Scientific Reports·Byoung S Ham
Feb 3, 2019·The Review of Scientific Instruments·Yue JiangShengwang Du
Oct 24, 2020·Physical Review Letters·Wei LiPatrick Windpassinger
Feb 3, 2021·Optics Letters·Chin-Yao ChengYong-Fan Chen
Mar 23, 2021·Physical Review Letters·Xu-Jie WangJian-Wei Pan
Mar 28, 2021·Optics Express·Zhiming Chen, Jianhua Zeng
Apr 7, 2021·Optics Express·Chong ShouGuoxiang Huang
Jul 11, 2021·The Review of Scientific Instruments·Jun ChenWeiping Zhang

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