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Consistent approach for quantum measurement
Zhang, P; Liu, XF; Sun, CP; Zhang, P , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
2002
发表期刊PHYSICAL REVIEW A
ISSN1050-2947
卷号66期号:4页码:-
摘要In a close form without referring the time-dependent Hamiltonian to the total system, a consistent approach for quantum measurement is proposed based on Zurek's triple model of quantum decoherence [W. Zurek, Phys. Rev. D 24, 1516 (1981)]. An exactly solvable model based on the intracavity system is dealt with in detail to demonstrate the central idea in our approach: by peeling off one collective variable of the measuring apparatus from its many degrees of freedom, as the pointer of the apparatus, the collective variable decouples with the internal environment formed by the effective internal variables, but still interacts with the measured system to form a triple entanglement among the measured system, the pointer, and the internal environment. As another mechanism to cause decoherence, the uncertainty of relative phase and its many-particle amplification can be summed up to an ideal entanglement or a Shmidt decomposition with respect to the preferred basis.
部门归属Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China; Peking Univ, Dept Math, Beijing 100871, Peoples R China
关键词Wave-function Collapse Current Situation Packet Collapse Decoherence Superposition States Environment Mechanics Model
学科领域Physics
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收录类别SCI
WOS记录号WOS:000179502200014
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被引频次:15[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/311006/13424
专题理论物理所1978-2010年知识产出
通讯作者Zhang, P , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
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Zhang, P,Liu, XF,Sun, CP,et al. Consistent approach for quantum measurement[J]. PHYSICAL REVIEW A,2002,66(4):-.
APA Zhang, P,Liu, XF,Sun, CP,&Zhang, P , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China..(2002).Consistent approach for quantum measurement.PHYSICAL REVIEW A,66(4),-.
MLA Zhang, P,et al."Consistent approach for quantum measurement".PHYSICAL REVIEW A 66.4(2002):-.
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