ITP OpenIR  > 理论物理所2015年知识产出
Discontinuity and Protection of Quantum Fisher Information for a Two-Qubit System*
Wang, GY; Yuan, JB; Zeng, HS; Zeng, HS (reprint author), Hunan Normal Univ, Dept Phys, Minist Educ, Key Lab Low Dimens Quantum Structures & Quantum C, Changsha 410081, Hunan, Peoples R China.
2015
发表期刊COMMUNICATIONS IN THEORETICAL PHYSICS
卷号64期号:5页码:495-500
文章类型Article
摘要We analytically investigate the dynamics of quantum Fisher information of two qubits in independent environments for both uncorrelated and entangled input states. Especially, we observe that, in the non-Markovian regime and resonant case, quantum Fisher information of uncorrelated input state vanishes only at discrete time point whereas that of entangled input state can disappear during finite time interval. It shows that quantum Fisher information, which determines the parameter estimation precision, is strongly affected by the environment memory effects, and the advantage of entanglement-enhance metrology no longer exists even for a very short time. We also note that quantum Fisher information for two kinds of input states can be preserved under appropriate qubit-reservoir detuning.
关键词Quantum Fisher Information Discontinuity Protection
学科领域Physics
资助者National Natural Science Foundation of China [11275064, 11075050] ; National Natural Science Foundation of China [11275064, 11075050] ; Specialized Research Fund for the Doctoral Program of Higher Education [20124306110003] ; Specialized Research Fund for the Doctoral Program of Higher Education [20124306110003] ; Scientific Research Foundation of the Education Department of Hunan Province [13C039] ; Scientific Research Foundation of the Education Department of Hunan Province [13C039] ; Construct Program of the National Key Discipline ; Construct Program of the National Key Discipline ; National Natural Science Foundation of China [11275064, 11075050] ; National Natural Science Foundation of China [11275064, 11075050] ; Specialized Research Fund for the Doctoral Program of Higher Education [20124306110003] ; Specialized Research Fund for the Doctoral Program of Higher Education [20124306110003] ; Scientific Research Foundation of the Education Department of Hunan Province [13C039] ; Scientific Research Foundation of the Education Department of Hunan Province [13C039] ; Construct Program of the National Key Discipline ; Construct Program of the National Key Discipline
关键词[WOS]METROLOGY ; STATES
收录类别SCI
语种英语
资助者National Natural Science Foundation of China [11275064, 11075050] ; National Natural Science Foundation of China [11275064, 11075050] ; Specialized Research Fund for the Doctoral Program of Higher Education [20124306110003] ; Specialized Research Fund for the Doctoral Program of Higher Education [20124306110003] ; Scientific Research Foundation of the Education Department of Hunan Province [13C039] ; Scientific Research Foundation of the Education Department of Hunan Province [13C039] ; Construct Program of the National Key Discipline ; Construct Program of the National Key Discipline ; National Natural Science Foundation of China [11275064, 11075050] ; National Natural Science Foundation of China [11275064, 11075050] ; Specialized Research Fund for the Doctoral Program of Higher Education [20124306110003] ; Specialized Research Fund for the Doctoral Program of Higher Education [20124306110003] ; Scientific Research Foundation of the Education Department of Hunan Province [13C039] ; Scientific Research Foundation of the Education Department of Hunan Province [13C039] ; Construct Program of the National Key Discipline ; Construct Program of the National Key Discipline
WOS类目Physics, Multidisciplinary
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/20802
专题理论物理所2015年知识产出
通讯作者Zeng, HS (reprint author), Hunan Normal Univ, Dept Phys, Minist Educ, Key Lab Low Dimens Quantum Structures & Quantum C, Changsha 410081, Hunan, Peoples R China.
推荐引用方式
GB/T 7714
Wang, GY,Yuan, JB,Zeng, HS,et al. Discontinuity and Protection of Quantum Fisher Information for a Two-Qubit System*[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2015,64(5):495-500.
APA Wang, GY,Yuan, JB,Zeng, HS,&Zeng, HS .(2015).Discontinuity and Protection of Quantum Fisher Information for a Two-Qubit System*.COMMUNICATIONS IN THEORETICAL PHYSICS,64(5),495-500.
MLA Wang, GY,et al."Discontinuity and Protection of Quantum Fisher Information for a Two-Qubit System*".COMMUNICATIONS IN THEORETICAL PHYSICS 64.5(2015):495-500.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Discontinuity and Pr(593KB)期刊论文出版稿开放获取CC BY-NC-SA请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Wang, GY]的文章
[Yuan, JB]的文章
[Zeng, HS]的文章
百度学术
百度学术中相似的文章
[Wang, GY]的文章
[Yuan, JB]的文章
[Zeng, HS]的文章
必应学术
必应学术中相似的文章
[Wang, GY]的文章
[Yuan, JB]的文章
[Zeng, HS]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。