文献类型：期刊文献

英文题名：Davies theory for teleportation of quantum Fisher information under decoherence

作者：Guo, You-Neng[1,2,3];Peng, Hu-Ping[1];Yang, Cheng[1];Xie, Qin[4];Zeng, Ke[1]

机构：[1]Changsha Univ, Dept Elect & Commun Engn, Changsha 410022, Hunan, Peoples R China;[2]Hunan Normal Univ, Key Lab Low Dimens Quantum Struct & Quantum Contr, Minist Educ, Changsha 410081, Hunan, Peoples R China;[3]Hunan Normal Univ, Dept Phys, Changsha 410081, Hunan, Peoples R China;[4]Guangdong Ocean Univ, Phys & Photoelect Sci Dept, Zhanjiang 524088, Peoples R China

年份：2019

卷号：16

期号：12

外文期刊名：LASER PHYSICS LETTERS

收录：SCI-EXPANDED(收录号：WOS:000499951900001)、、Scopus(收录号：2-s2.0-85077932467)、WOS

基金：This work is supported by the National Natural Science Foundation of China under Grant No. 11747107, the Natural Science Foundation of Hunan Province (Grant No. 2017JJ3346), the Project of Science and Technology Plan of Changsha (K1705022 and kc1809023), the Scientific Research Project of Hunan Province Department of Education (Grant No. 18A373) and the Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education (QSQC1810).

语种：英文

外文关键词：quantum teleportation; quantum Fisher information (QFI); Davies-type Markovian environment

外文摘要：We have investigated the teleportation of quantum Fisher information (QFI) for a single-qubit system by using two different maximally entangled pure states as resources influenced by a Davies-type Markovian environment. According to the definition of QFI, we first derive the explicit analytical results of QFI with respect to the weight parameter and phase parameter under decoherence. Our analytical results show that the teleportation of QFI is seriously affected by two classes of environment, including dissipative and pure dephasing, depending on the parameter of the teleported state during the teleportation process. In particular, for the optimal precision of estimating the weight parameter is only affected by a dissipative environment with temperature, while the precision of estimating the phase parameter is merely influenced by the dephasing environment.