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题名: Creation of entanglement between two electron spins induced by many spin ensemble excitations
作者: Ai, Q. ;  Li, Y. ;  Long, G. L. ;  Sun, C. P.
刊名: EUROPEAN PHYSICAL JOURNAL D
出版日期: 2008
卷号: 48, 期号:2, 页码:293-300
关键词: RADIATION-PRESSURE ;  QUANTUM DOTS ;  MICROMIRROR ;  RESONATOR
学科分类: Physics
通讯作者: Ai, Q , Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China
部门归属: [Ai, Q; Long, GL] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China; [Li, Y] Univ Basel, Dept Phys, CH-4056 Basel, Switzerland; [Long, GL] Tsinghua Natl Lab Informat Sci & Technol, Beijing 100084, Peoples R China; [Sun, CP] Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: We theoretically explore the possibility of creating spin entanglement by simultaneously coupling two electronic spins to a nuclear ensemble. By microscopically modeling the spin ensemble as a single mode boson field, we use the time-dependent Frohlich transformation (TDFT) method developed recently [Y. Li, C. Bruder, C.P. Sun, Phys. Rev. A 75, 032302 (2007)] to calculate the effective coupling between the two spins. Our investigation shows that the total system realizes a solid state based architecture for cavity QED. Exchanging such kind of effective boson in a virtual process can result in an effective interaction between two spins. It is discovered that a maximum entangled state can be obtained when the velocity of the electrons matches the initial distance between them in a suitable way. Moreover, we also study how the number of collective excitations influences the entanglement. It is shown that the larger the number of excitation is, the less the two spins entangle each other.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000256663500017
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5511
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Ai, Q.,Li, Y.,Long, G. L.,et al. Creation of entanglement between two electron spins induced by many spin ensemble excitations[J]. EUROPEAN PHYSICAL JOURNAL D,2008,48(2):293-300.
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