Quantum interferometer with two-mode squeezed vacuum：S^z2 measurement

Quantum interferometric strategy with input two-mode squeezed vacuum [Phys. Rev. Lett. 104 103602] is reexamined for both parity and S^z2 measurements. Unlike the previous scheme, we find that phase sensitivity obtained with the S^z2 measurement is minimized at phase origin, which may be useful to e...

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Published in中国物理B：英文版 no. 11; pp. 315 - 318
Main Author 张渊明 李昕伟 金光日
Format Journal Article
LanguageEnglish
Published 2013
Subjects
压缩真空
双模
奇偶检测
干涉仪
校验和
测量
相位灵敏度
量子干涉
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Abstract Quantum interferometric strategy with input two-mode squeezed vacuum [Phys. Rev. Lett. 104 103602] is reexamined for both parity and S^z2 measurements. Unlike the previous scheme, we find that phase sensitivity obtained with the S^z2 measurement is minimized at phase origin, which may be useful to estimate a small phase shift at high precision. For the phase deviated from zero, the sensitivity increases more slowly than that of the parity detection.
AbstractList Quantum interferometric strategy with input two-mode squeezed vacuum [Phys. Rev. Lett. 104 103602] is reexamined for both parity and S^z2 measurements. Unlike the previous scheme, we find that phase sensitivity obtained with the S^z2 measurement is minimized at phase origin, which may be useful to estimate a small phase shift at high precision. For the phase deviated from zero, the sensitivity increases more slowly than that of the parity detection.
Author 张渊明 李昕伟 金光日
AuthorAffiliation Department of Physics, Beijing Jiaotong University, Beijing 100044, China
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Notes Mach-Zehnder interferometer, phase sensitivity
Quantum interferometric strategy with input two-mode squeezed vacuum [Phys. Rev. Lett. 104 103602] is reexamined for both parity and S^z2 measurements. Unlike the previous scheme, we find that phase sensitivity obtained with the S^z2 measurement is minimized at phase origin, which may be useful to estimate a small phase shift at high precision. For the phase deviated from zero, the sensitivity increases more slowly than that of the parity detection.
11-5639/O4
Zhang Yuan-Ming, Li Xin-Wei, Jin Guang-Ri（Department of Physics, Beijing Jiaotong University, Beijing 100044, China）
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PublicationTitle 中国物理B：英文版
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Snippet Quantum interferometric strategy with input two-mode squeezed vacuum [Phys. Rev. Lett. 104 103602] is reexamined for both parity and S^z2 measurements. Unlike...
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StartPage 315
SubjectTerms 压缩真空
双模
奇偶检测
干涉仪
校验和
测量
相位灵敏度
量子干涉
Title Quantum interferometer with two-mode squeezed vacuum：S^z2 measurement
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