| 三能级Tonks-Girardeau气体的Ramsey干涉的研究 |
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| 引用本文： | 刘先锋,韩玖荣,张首刚.三能级Tonks-Girardeau气体的Ramsey干涉的研究[J].时间频率学报,2010,33(2). |
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| 作者姓名： | 刘先锋 韩玖荣 张首刚 |
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| 作者单位： | 1. 扬州大学物理科学与技术学院,扬州,225002
2. 中国科学院国家授时中心,西安,710600;中国科学院时间频率基准重点实验室,西安,710600 |
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| 基金项目： | 国家自然科学基金重点资助项目(10834007);国家自然科学基金专项类资助项目(10647144); 中国科学院重要方向资助项目(KJCX2-SW-T12); 扬州大学自然科学基金资助项目(GK0513102) |
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| 摘 要： | 采用Ramsey分离振荡场方法,研究了紧束缚一维强相互作用的超冷玻色气体在Tonks-Girardeau区的Ramsey干涉。在等失谐情况下,干涉条纹宽度随着原子与分离场作用时间和拉比(Rabi)频率的增大而变窄。对量子投影噪声的研究表明,相比二能级Tonks-Girardeau气体,对于三能级模型,通过控制原子总数和调节外场可以降低量子噪声,有效地减少噪声对Tonks-Girardeau气体系统的干扰。原子干涉的探索对提高量子频率标准的精度具有重要理论指导意义。
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| 关 键 词： | Tonks-Girardeau气体 Ramsey干涉 量子投影噪声 |
Study of Ramsey Interferometry with Three-level Tonks-Girardeau Gas |
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| LIU Xian-feng,HAN Jiu-rong,ZHANG Shou-gang.Study of Ramsey Interferometry with Three-level Tonks-Girardeau Gas[J].Journal of Time and Frequency,2010,33(2). |
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| Authors: | LIU Xian-feng HAN Jiu-rong ZHANG Shou-gang |
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| Institution: | LIU Xian-feng1,HAN Jiu-rong1,ZHANG Shou-gang2,3(1.College of Physics Science and Technology,Yangzhou University,Yangzhou 225002,China,2.National Time Service Center,Chinese Academy of Sciences,Xi'an 710600,3.Key Laboratory of Time and Frequency Primary Standards,China) |
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| Abstract: | The Ramsey's method of separated oscillatory fields is applied to study Ramsey interferometry but using a Tonks-Girardeau model that describes a coherent one-dimensional gas of ultracold bosons with strong interactions.Under the equal detuning,the interference fringes width can be narrowed by increasing the Rabi frequency and the field-crossing time.Moreover,we gain further insight into the quantum projection noise.In contrast to a two-level TG gas,our results illustrate that the modulation of the total num... |
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| Keywords: | Tonks-Girardeau gas Ramsey interferometry quantum projection noise |
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