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题名: Quantum statistics of the collective excitations of an atomic ensemble inside a cavity
作者: Huang, JF ;  Ai, Q ;  Deng, YG ;  Sun, CP ;  Nori, F
刊名: PHYSICAL REVIEW A
出版日期: 2012
卷号: 85, 期号:2, 页码:23801
关键词: BODY APPROXIMATION METHODS ;  DIMENSIONAL HILBERT-SPACE ;  SMALL TUNNEL-JUNCTIONS ;  SOLVABLE MODEL ;  PERTURBATION THEORY ;  RYDBERG BLOCKADE ;  OPTICAL STATES ;  2-LEVEL ATOMS ;  SINGLE ATOMS ;  VALIDITY
学科分类: Physics
通讯作者: Huang, JF (reprint author), Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China.
部门归属: [Huang, Jin-Feng; Ai, Qing; Sun, C. P.] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China; [Deng, Yuangang] Henan Normal Univ, Dept Phys, Xinxiang, Peoples R China; [Nori, Franco] RIKEN, Adv Sci Inst, Wako, Saitama 3510198, Japan; [Nori, Franco] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA
英文摘要: We study the quantum statistical properties of the collective excitations of an atomic ensemble inside a high-finesse cavity. In the large-detuning regime, it is found that the virtual photon exchange can induce a long-range interaction between atoms, which results in correlated excitations. In particular, the atomic blockade phenomenon occurs when the induced long-range interaction effectively suppresses the double atomic excitation, when the average photon number takes certain values, which makes the two nearest energy levels degenerate. We also show that quantum phase transitions occur in the indirectly interacting atomic ensemble when the average photon number reaches several critical points. In this sense, the quantum statistical properties of the collective excitations are very sensitive to the change of the average photon number. Our model exhibits quantum phase transitions similar to the ones in the Lipkin-Meshkov-Glick model. Our proposal could be implemented in a variety of systems including cavity quantum electrodynamics (QED), Bose-Einstein condensates, and circuit QED.
资助者: National Natural Science Foundation of China [10935010, 11074261]; Laboratory of Physical Sciences, National Security Agency, Army Research Office, National Science Foundation [0726909]; MEXT Kakenhi on Quantum Cybernetics; JSPS-FIRST
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000299846000006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15165
Appears in Collections:理论物理所2012年知识产出_期刊论文

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Recommended Citation:
Huang, JF,Ai, Q,Deng, YG,et al. Quantum statistics of the collective excitations of an atomic ensemble inside a cavity[J]. PHYSICAL REVIEW A,2012,85(2):23801.
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