Light storage in a cold atomic ensemble with a high optical depth

被引：0
|
作者：
Kwang-Kyoon Park
Young-Tak Chough
Yoon-Ho Kim
机构：
[1] Pohang University of Science and Technology (POSTECH),Department of Physics
[2] Gwangju University,Department of Medical Technology
来源：
Journal of the Korean Physical Society | 2017年 / 70卷
关键词：
Quantum memory; Light storage; Cold atoms; Electromagnetically induced transparency;
D O I：
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中图分类号：
学科分类号：
摘要：
A quantum memory with a high storage efficiency and a long coherence time is an essential element in quantum information applications. Here, we report our recent development of an optical quantum memory with a rubidium-87 cold atom ensemble. By increasing the optical depth of the medium, we have achieved a storage efficiency of 65% and a coherence time of 51 μs for a weak laser pulse. The result of a numerical analysis based on the Maxwell-Bloch equations agrees well with the experimental results. Our result paves the way toward an efficient optical quantum memory and may find applications in photonic quantum information processing.
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页码：1007 / 1010
页数：3
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