| Dynamic control of retrieval contrast in a Λ-type atomic system |
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| 引用本文： | 张晓航,鲍倩倩,张岩,苏铭彻,崔淬砺,吴金辉. Dynamic control of retrieval contrast in a Λ-type atomic system[J]. 中国物理 B, 2012, 21(5): 54209-054209. DOI: 10.1088/1674-1056/21/5/054209 |
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| 作者姓名： | 张晓航 鲍倩倩 张岩 苏铭彻 崔淬砺 吴金辉 |
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| 作者单位： | 1. College of Physics, Jilin University, Changchun 130012, China;2. College of Computer Science and Technology, Jilin University, Changchun 130012, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China(Grant No.11104112);the National Foundation for Fostering Talents of Basic Science,China(Grant No.J1103202);the China Postdoctoral Science Foundation(Grant No.20110491316);the National Undergraduate Innovation Foundation of China(Grant No.2011A32045);the Basic Scientific Research Foundation of Jilin University,China |
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| 摘 要： | We propose an efficient scheme for optimizing the optical memory of a sequence of signal light pulses in a system of ultracold atoms in Λ configuration. The memory procedure consists of write-in, storage, and retrieval phases. By applying a weak microwave field in the storage stage, additional phase-dependent terms are included, and the contrast of the output signal pulses can be dynamically controlled (enhanced or suppressed) through manipulating the relative phase φ between optical and microwave fields. Our numerical analysis shows that the contrast is enhanced to the most extent when φ=1.5π. In addition, the contrast is in proportion to the Rabi frequency of the microwave field with a certain relative phase.
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| 关 键 词： | electromagnetically induced transparency optical memory relative phase |
| 收稿时间： | 2011-10-28 |
Dynamic control of retrieval contrast in a $Lambda$-type atomic system |
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| Zhang Xiao-Hang,Bao Qian-Qian,Zhang Yan,Su Ming-Che,Cui Cui-Li,Wu Jin-Hui. Dynamic control of retrieval contrast in a $Lambda$-type atomic system[J]. Chinese Physics B, 2012, 21(5): 54209-054209. DOI: 10.1088/1674-1056/21/5/054209 |
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| Authors: | Zhang Xiao-Hang Bao Qian-Qian Zhang Yan Su Ming-Che Cui Cui-Li Wu Jin-Hui |
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| Affiliation: | a. College of Physics, Jilin University, Changchun 130012, China;b. College of Computer Science and Technology, Jilin University, Changchun 130012, China |
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| Abstract: | We propose an efficient scheme for optimizing the optical memory of a sequence of signal light pulses in a system of ultracold atoms in Λ configuration. The memory procedure consists of write-in, storage, and retrieval phases. By applying a weak microwave field in the storage stage, additional phase-dependent terms are included, and the contrast of the output signal pulses can be dynamically controlled (enhanced or suppressed) through manipulating the relative phase φ between optical and microwave fields. Our numerical analysis shows that the contrast is enhanced to the most extent when φ=1.5π. In addition, the contrast is in proportion to the Rabi frequency of the microwave field with a certain relative phase. |
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| Keywords: | electromagnetically induced transparency optical memory relative phase |
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