| 基于双光子的超辐射高精度位移测量 |
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| 引用本文： | 夏立新,胡琳兰.基于双光子的超辐射高精度位移测量[J].喀什师范学院学报,2014(6):17-19. |
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| 作者姓名： | 夏立新 胡琳兰 |
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| 作者单位： | 1. 喀什师范学院 物理系,新疆 喀什,844008
2. 乌鲁木齐八一中学,新疆 乌鲁木齐,830000 |
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| 基金项目： | 国家自然基金资助项目，喀什师范学院人才培养基金项目 |
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| 摘 要： | 通过将多个光动量变换到三能级原子系综,提出了基于双光子达到海森堡极限超辐射高精度的位移测量方案.利用2N个相干脉冲可制备双激发狄拉克态的叠加态,每个狄拉克态由包含4N个分立光动量的超辐射态构成.结果表明,两态间的相位差与原子系综整体位移有关,其测量精度可高达1/8N.同时,利用拉姆齐干涉仪,简单说明了在晶体中本方案实现的可行性.
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| 关 键 词： | 超辐射 高精度 海森堡极限 位移测量 |
Super-radiant Super-resolving Displacement Measurement by Using Two Photons |
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| XIA Li-xin,HU Lin-lan.Super-radiant Super-resolving Displacement Measurement by Using Two Photons[J].Journal of Kashgar Teachers College,2014(6):17-19. |
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| Authors: | XIA Li-xin HU Lin-lan |
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| Institution: | XIA Li-xin,HU Lin-lan ( 1 .Department of Physics, Kashgar Teachers College, Kashgar 844008, Xinjiang, China; 2.Bayi Middle School of Ummqi, Urumqi 830000, Xinjiang, China) |
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| Abstract: | By encoding multiple light momenta into a three-level atomic ensemble,we propose a super-radiant metrology scheme to achieve Heisenberg limit super-resolving displacement measurement. We use coherent-pulse groups to prepare a two excitation super-radiant state in a superposition of two timed Dicke states that are light momenta apart in the momentum space. The phase difference between these two states induced by a uniform displacement of the atomic ensemble hassensitivity. Experiments based on Ramsey interferometry are proposed in crystal. |
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| Keywords: | Super-radiant Super-resolving Heisenberg Limit Displacement Measurement |
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