High-storage efficiency EIT-based optical memory

Yi-Hsin Chen; Meng-Jung Lee; I-Chung Wang; Shengwang Du; Yong-Fan Chen; Ying-Cheng Chen; Ite A. Yu

doi:10.1117/12.2047551

21 February 2014 High-storage efficiency EIT-based optical memory

Yi-Hsin Chen, Meng-Jung Lee, I-Chung Wang, Shengwang Du, Yong-Fan Chen, Ying-Cheng Chen, Ite A. Yu

Author Affiliations +

Proceedings Volume 8998, Advances in Slow and Fast Light VII; 89981Q (2014) https://doi.org/10.1117/12.2047551
Event: SPIE OPTO, 2014, San Francisco, California, United States

Abstract

A high-storage efficiency and long-live quantum memory for photons is an essential component for the information processing in long-distance quantum communication and optical quantum computation. We demonstrated a 78% storage efficiency (SE) of coherent light pulses with a cold atomic medium based on the effect of electromagnetically induced transparency (EIT). We also obtained a large fractional delay of 74 at 50% SE, which is the best record to date. The measured fidelity of the memory is better than 90%. The results suggest the EIT light-matter interface can be readily applied to single-photon quantum states. Our work greatly advances the technology of EIT-based quantum memory for the practical quantum information applications.

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Yi-Hsin Chen, Meng-Jung Lee, I-Chung Wang, Shengwang Du, Yong-Fan Chen, Ying-Cheng Chen, and Ite A. Yu "High-storage efficiency EIT-based optical memory", Proc. SPIE 8998, Advances in Slow and Fast Light VII, 89981Q (21 February 2014); https://doi.org/10.1117/12.2047551

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