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题名: Advantages of nonclassical pointer states in postselected weak measurements
作者: Turek, Y;  Maimaiti, W;  Shikano, Y;  Sun, CP;  Al-Amri, M
刊名: PHYSICAL REVIEW A
出版日期: 2015
卷号: 92, 期号:2, 页码:22109
学科分类: Optics ;  Physics
DOI: http://dx.doi.org/10.1103/PhysRevA.92.022109
通讯作者: Turek, Y (reprint author), King Abdulaziz City Sci & Technol, NCAP, Riyadh 11442, Saudi Arabia.
文章类型: Article
英文摘要: We investigate, within the weak measurement theory, the advantages of nonclassical pointer states over semiclassical ones for coherent, squeezed vacuum, and Schrodinger cat states. These states are utilized as pointer states for the system operator (A) over cap with property (A) over cap (2) = (I) over cap, where (I) over cap represents the identity operator. We calculate the ratio between the signal-to-noise ratio of nonpostselected and postselected weak measurements. The latter is used to find the quantum Fisher information for the above pointer states. The average shifts for those pointer states with arbitrary interaction strength are investigated in detail. One key result is that we find the postselected weak measurement scheme for nonclassical pointer states to be superior to semiclassical ones. This can improve the precision of the measurement process.
类目[WOS]: Optics ;  Physics, Atomic, Molecular & Chemical
关键词[WOS]: VALUES ;  LIGHT ;  SPIN ;  INTERFEROMETER ;  REALIZATION ;  INEQUALITY ;  VIOLATION ;  PRECISION ;  PHOTONS
收录类别: SCI
项目资助者: Center for the Promotion of Integrated Sciences (CPIS) of Sokendai ;  ICRR Joint Research from The University of Tokyo ;  NINS Youth Collaborative Project ;  King Abdulaziz City for Science and Technology (KACST)
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/20896
Appears in Collections:理论物理所2015年知识产出_期刊论文

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Recommended Citation:
Turek, Y,Maimaiti, W,Shikano, Y,et al. Advantages of nonclassical pointer states in postselected weak measurements[J]. PHYSICAL REVIEW A,2015,92(2):22109.
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