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Proceedings Paper

High-storage efficiency EIT-based optical memory
Author(s): Yi-Hsin Chen; Meng-Jung Lee; I-Chung Wang; Shengwang Du; Yong-Fan Chen; Ying-Cheng Chen; Ite A. Yu
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Paper 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.

Paper Details

Date Published: 21 February 2014
PDF: 9 pages
Proc. SPIE 8998, Advances in Slow and Fast Light VII, 89981Q (21 February 2014); doi: 10.1117/12.2047551
Show Author Affiliations
Yi-Hsin Chen, National Tsing Hua Univ. (Taiwan)
Meng-Jung Lee, National Tsing Hua Univ. (Taiwan)
I-Chung Wang, National Tsing Hua Univ. (Taiwan)
Shengwang Du, The Hong Kong Univ. of Science and Technology (Hong Kong, China)
Yong-Fan Chen, National Cheng Kung Univ. (Taiwan)
Ying-Cheng Chen, National Tsing Hua Univ. (Taiwan)
Institute of Atomic and Molecular Sciences (Taiwan)
Ite A. Yu, National Tsing Hua Univ. (Taiwan)


Published in SPIE Proceedings Vol. 8998:
Advances in Slow and Fast Light VII
Selim M. Shahriar; Frank A. Narducci, Editor(s)

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