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Creation of entanglement between two electron spins induced by many spin ensemble excitations
Ai, Q.; Li, Y.; Long, G. L.; Sun, C. P.; Ai, Q , Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China
2008
发表期刊EUROPEAN PHYSICAL JOURNAL D
ISSN1434-6060
卷号48期号:2页码:293-300
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.
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
关键词Radiation-pressure Quantum Dots Micromirror Resonator
学科领域Physics
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收录类别SCI
WOS记录号WOS:000256663500017
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被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5511
专题理论物理所SCI论文
通讯作者Ai, Q , Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China
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GB/T 7714
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.
APA Ai, Q.,Li, Y.,Long, G. L.,Sun, C. P.,&Ai, Q , Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China.(2008).Creation of entanglement between two electron spins induced by many spin ensemble excitations.EUROPEAN PHYSICAL JOURNAL D,48(2),293-300.
MLA Ai, Q.,et al."Creation of entanglement between two electron spins induced by many spin ensemble excitations".EUROPEAN PHYSICAL JOURNAL D 48.2(2008):293-300.
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