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题名: Quantum Zeno and anti-Zeno effects measured by transition probabilities
作者: Zhang, WX ;  Kofman, AG ;  Zhuang, J ;  You, JQ ;  Nori, F
刊名: PHYSICS LETTERS A
出版日期: 2013
卷号: 377, 期号:31-33, 页码:1837-1843
关键词: ELECTRON-SPIN DECOHERENCE ;  SUPPRESSION ;  FREQUENCY ;  DECAY ;  STATE ;  DOT
学科分类: Physics
通讯作者: Zhang, WX (reprint author), Wuhan Univ, Sch Phys & Technol, Wuhan 430072, Hubei, Peoples R China.
部门归属: [Zhang, Wenxian] Wuhan Univ, Sch Phys & Technol, Wuhan 430072, Hubei, Peoples R China; [Zhang, Wenxian; Zhuang, Jun] Fudan Univ, Dept Opt Sci & Engn, Shanghai 200433, Peoples R China; [Zhang, Wenxian; Kofman, A. G.; You, J. Q.; Nori, Franco] RIKEN, CEMS, Saitama 3510198, Japan; [Zhang, Wenxian] Chinese Acad Sci, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China; [Kofman, A. G.; Nori, Franco] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA; [You, J. Q.] Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China; [You, J. Q.] Beijing Computat Sci Res Ctr, Beijing 10084, Peoples R China
英文摘要: Using numerical calculations, we compare the transition probabilities of many spins in random magnetic fields, subject to either frequent projective measurements, frequent phase modulations, or a mix of modulations and measurements. For various distribution functions, we find the transition probability under frequent modulations is suppressed most if the pulse delay is short and the evolution time is larger than a critical value. Furthermore, decay freezing occurs only under frequent modulations as the pulse delay approaches zero. In the large pulse-delay region, however, the transition probabilities under frequent modulations are highest among the three control methods. (C) 2013 Elsevier B.V. All rights reserved.
资助者: National Basic Research Program of China [2009CB929300]; National Natural Science Foundation of China [10904017, 11275139]; NCET; Specialized Research Fund for the Doctoral Program of Higher Education of China [20090071120013]; Shanghai Pujiang Program [10PJ1401300]; Army Research Office, JSPS-RFBR [12-02-92100]; MEXT Kakenhi on Quantum Cybernetics; Funding Program for Innovative R&D on ST (FIRST)
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000320908700013
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15258
Appears in Collections:理论物理所2013年知识产出 _期刊论文

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Recommended Citation:
Zhang, WX,Kofman, AG,Zhuang, J,et al. Quantum Zeno and anti-Zeno effects measured by transition probabilities[J]. PHYSICS LETTERS A,2013,377(31-33):1837-1843.
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