Freezing quantum coherence with weak measurement  

作　　者：杨连武 夏云杰 

机构地区：[1]Shandong Provincial Key Laboratory of Laser Polarization and Information Technology,Department of Physics,Qufu Normal University [2]Department of Physics and Information Engineering,Jining University

出　　处：《Chinese Optics Letters》2017年第5期78-81,共4页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.11204156,61178012,11304179,11247240,and 11647172);the Natural Science Foundation of Shandong Province(No.ZR2016AP09);the Specialized Research Fund for the Doctoral Program of Higher Education(No.20133705110001)

摘　　要：We show how to optimally protect quantum states and freeze coherence under incoherent channels using a quantum weak measurement and quantum measurement reversal. In particular, we present explicit formulas for the conditions for freezing quantum coherence in a given quantum state.We show how to optimally protect quantum states and freeze coherence under incoherent channels using a quantum weak measurement and quantum measurement reversal. In particular, we present explicit formulas for the conditions for freezing quantum coherence in a given quantum state.

关 键 词：FREEZING Quantum optics 

分 类 号：O413[理学—理论物理]