ITP OpenIR  > 理论物理所2014年知识产出
Dynamics of quantum zeno and anti-zeno effects in an open system
Zhang, P; Ai, Q; Li, Y; Xu, DZ; Sun, CP; Sun, CP (reprint author), Beijing Computat Sci Res Ctr, Beijing 100084, Peoples R China.
2014
发表期刊SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
ISSN1674-7348
卷号57期号:2页码:194-207
摘要We provide a general dynamical approach for the quantum Zeno and anti-Zeno effects in an open quantum system under repeated non-demolition measurements. In our approach the repeated measurements are described by a general dynamical model without the wave function collapse postulation. Based on that model, we further study both the short-time and long-time evolutions of the open quantum system under repeated non-demolition measurements, and derive the measurement-modified decay rates of the excited state. In the cases with frequent ideal measurements at zero-temperature, we re-obtain the same decay rate as that from the wave function collapse postulation (Nature, 2000, 405: 546). The correction to the ideal decay rate is also obtained under the non-ideal measurements. Especially, we find that the quantum Zeno and anti-Zeno effects are possibly enhanced by the non-ideal natures of measurements. For the open system under measurements with arbitrary period, we generally derive the rate equation for the long-time evolution for the cases with arbitrary temperature and noise spectrum, and show that in the long-time evolution the noise spectrum is effectively tuned by the repeated measurements. Our approach is also able to describe the quantum Zeno and anti-Zeno effects given by the phase modulation pulses, as well as the relevant quantum control schemes.
部门归属[Zhang Peng] Renmin Univ China, Dept Phys, Beijing 100190, Peoples R China; [Ai Qing] Natl Taiwan Univ, Dept Chem, Taipei 106, Taiwan; [Ai Qing] Natl Taiwan Univ, Ctr Quantum Sci & Engn, Taipei 106, Taiwan; [Li Yong; Sun ChangPu] Beijing Computat Sci Res Ctr, Beijing 100084, Peoples R China; [Xu DaZhi; Sun ChangPu] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China
关键词Projection Postulate Paradox Collapse Decay Atom
学科领域Physics
资助者National Natural Science Foundation of China [11074305, 10935010, 11074261, 11121403]; National Basic Research Program of China [2012CB922104, 2014CB921402] ; National Natural Science Foundation of China [11074305, 10935010, 11074261, 11121403]; National Basic Research Program of China [2012CB922104, 2014CB921402] ; National Natural Science Foundation of China [11074305, 10935010, 11074261, 11121403]; National Basic Research Program of China [2012CB922104, 2014CB921402] ; National Natural Science Foundation of China [11074305, 10935010, 11074261, 11121403]; National Basic Research Program of China [2012CB922104, 2014CB921402]
DOI10.1007/s11433-013-5377-x
URL查看原文
收录类别SCI
语种英语
资助者National Natural Science Foundation of China [11074305, 10935010, 11074261, 11121403]; National Basic Research Program of China [2012CB922104, 2014CB921402] ; National Natural Science Foundation of China [11074305, 10935010, 11074261, 11121403]; National Basic Research Program of China [2012CB922104, 2014CB921402] ; National Natural Science Foundation of China [11074305, 10935010, 11074261, 11121403]; National Basic Research Program of China [2012CB922104, 2014CB921402] ; National Natural Science Foundation of China [11074305, 10935010, 11074261, 11121403]; National Basic Research Program of China [2012CB922104, 2014CB921402]
WOS记录号WOS:000329997700002
引用统计
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/311006/15489
专题理论物理所2014年知识产出
通讯作者Sun, CP (reprint author), Beijing Computat Sci Res Ctr, Beijing 100084, Peoples R China.
推荐引用方式
GB/T 7714
Zhang, P,Ai, Q,Li, Y,et al. Dynamics of quantum zeno and anti-zeno effects in an open system[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2014,57(2):194-207.
APA Zhang, P,Ai, Q,Li, Y,Xu, DZ,Sun, CP,&Sun, CP .(2014).Dynamics of quantum zeno and anti-zeno effects in an open system.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,57(2),194-207.
MLA Zhang, P,et al."Dynamics of quantum zeno and anti-zeno effects in an open system".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 57.2(2014):194-207.
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