Quantum decoherence from adiabatic entanglement with external one or a few degrees of freedom
文献类型：期刊论文
| 作者 | Sun, CP ; Zhou, DL; Yu, SX; Liu, XF; Sun, CP , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.
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| 刊名 | EUROPEAN PHYSICAL JOURNAL D
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| 出版日期 | 2001 |
| 卷号 | 13期号:1页码:145-155 |
| 关键词 | Wave-function Collapse Dissipative System Phase-factors Approximations Model Factorization Interference Realization Computation Evolution |
| ISSN号 | 1434-6060 |
| 英文摘要 | Based on the Born-Oppenhemer approximation, the concept of adiabatic quantum entanglement is introduced to account for quantum decoherence of a quantum system due to its interaction with a large system of one or a few degrees of freedom. In the adiabatic limit, it is shown that the wave function of the total system formed by the quantum system plus the large system can be factorized as an entangled state with correlation between adiabatic quantum states and quasi-classical motion configurations of the large system. In association with a novel viewpoint about quantum measurement, which has been directly verified by most recent experiments [e.g., S. Durr et al., Nature 33, 359 (1998)], it is shown that the adiabatic entanglement is indeed responsible for the quantum decoherence and thus can be regarded as a "clean" quantum measurement when the large system behaves as a classical object. By baking the large system respectively to be a macroscopically distinguishable spatial variable, a high spin system and a harmonic oscillator with a coherent initial state, three illustrations are presented with their explicit solutions in this paper. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000166418300016 |
| 公开日期 | 2012-08-29 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/12838]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Sun, CP , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Sun, CP,Zhou, DL,Yu, SX,et al. Quantum decoherence from adiabatic entanglement with external one or a few degrees of freedom[J]. EUROPEAN PHYSICAL JOURNAL D,2001,13(1):145-155. |
| APA | Sun, CP,Zhou, DL,Yu, SX,Liu, XF,&Sun, CP , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China..(2001).Quantum decoherence from adiabatic entanglement with external one or a few degrees of freedom.EUROPEAN PHYSICAL JOURNAL D,13(1),145-155. |
| MLA | Sun, CP,et al."Quantum decoherence from adiabatic entanglement with external one or a few degrees of freedom".EUROPEAN PHYSICAL JOURNAL D 13.1(2001):145-155. |
入库方式： OAI收割
来源：理论物理研究所
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