General coarsened measurement references for revelation of a classical world

doi:10.1088/1674-1056/25/11/110302

中国物理B ›› 2016, Vol. 25 ›› Issue (11): 110302-110302.doi: 10.1088/1674-1056/25/11/110302

General coarsened measurement references for revelation of a classical world

Dong Xie(谢东), Chunling Xu(徐春玲), Anmin Wang(王安民)

1 National Earthquake Infrastructure Service, China Earthquake Administration, Beijing 100045, China;
2 Institute of High Energy Physics, Chinese Academic Sciences, Beijing 100049, China;
3 Peking University, Beijing 100871, China;
4 Department of Physics, University of Texas at Dallas, Richardson, Texas, USA

收稿日期:2016-06-17 修回日期:2016-07-13 出版日期:2016-11-05 发布日期:2016-11-05
通讯作者: Dong Xie E-mail:xiedong@mail.ustc.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 11375168).

General coarsened measurement references for revelation of a classical world

Dong Xie(谢东)¹, Chunling Xu(徐春玲)¹, Anmin Wang(王安民)²

1 National Earthquake Infrastructure Service, China Earthquake Administration, Beijing 100045, China;
2 Institute of High Energy Physics, Chinese Academic Sciences, Beijing 100049, China;
3 Peking University, Beijing 100871, China;
4 Department of Physics, University of Texas at Dallas, Richardson, Texas, USA

Received:2016-06-17 Revised:2016-07-13 Online:2016-11-05 Published:2016-11-05
Contact: Dong Xie E-mail:xiedong@mail.ustc.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 11375168).

摘要/Abstract

摘要： It has been found that for a fixed degree of fuzziness in the coarsened references of measurements, the quantum-to-classical transition can be observed independent of the macroscopicity of the quantum state. We explore a general situation that the degree of fuzziness can change with the rotation angle between two states (different rotation angles represent different references). The fuzziness of reference comes from two kinds of fuzziness:the Hamiltonian (rotation frequency) and the timing (rotation time). For the fuzziness of the Hamiltonian alone, the degree of fuzziness for the reference will change with the rotation angle between two states, and the quantum effects can still be observed with any degree of fuzziness of Hamiltonian. For the fuzziness of timing, the degree of the coarsening reference is unchanged with the rotation angle. During the rotation of the measurement axis, the decoherence environment can also help the classical-to-quantum transition due to changing the direction of the measurement axis.

关键词: coarsened references, quantum-to-classical transition, decoherence

Abstract: It has been found that for a fixed degree of fuzziness in the coarsened references of measurements, the quantum-to-classical transition can be observed independent of the macroscopicity of the quantum state. We explore a general situation that the degree of fuzziness can change with the rotation angle between two states (different rotation angles represent different references). The fuzziness of reference comes from two kinds of fuzziness:the Hamiltonian (rotation frequency) and the timing (rotation time). For the fuzziness of the Hamiltonian alone, the degree of fuzziness for the reference will change with the rotation angle between two states, and the quantum effects can still be observed with any degree of fuzziness of Hamiltonian. For the fuzziness of timing, the degree of the coarsening reference is unchanged with the rotation angle. During the rotation of the measurement axis, the decoherence environment can also help the classical-to-quantum transition due to changing the direction of the measurement axis.

Key words: coarsened references, quantum-to-classical transition, decoherence

中图分类号: (Foundations of quantum mechanics; measurement theory)

03.65.Ta

03.65.Ud (Entanglement and quantum nonlocality) 03.67.Mn (Entanglement measures, witnesses, and other characterizations) 42.50.Dv (Quantum state engineering and measurements)

谢东, 徐春玲, 王安民. General coarsened measurement references for revelation of a classical world[J]. 中国物理B, 2016, 25(11): 110302-110302.

Dong Xie(谢东), Chunling Xu(徐春玲), Anmin Wang(王安民). General coarsened measurement references for revelation of a classical world[J]. Chin. Phys. B, 2016, 25(11): 110302-110302.

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General coarsened measurement references for revelation of a classical world

General coarsened measurement references for revelation of a classical world

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