Compare Quantum Operation Sensitivity for Different Distance Measures  

作　　者：麻志浩 王渺寅 

机构地区：[1]Department of Mathematics, Shanghai Jiaotong University [2]Department of Physics, Shanghai Jiaotong University

出　　处：《Communications in Theoretical Physics》2010年第4期635-636,共2页理论物理通讯（英文版）

基　　金：Supported by National Natural Science Foundation of China under Grant No. 10901103;the New Teacher Foundation of Ministry of Education of China under Grant No. 20070248087;Supported by a Grant of Science and Technology Commission of Shanghai Municipality (STCSM No. 09XD1402500)

摘　　要：In this paper, we compare the quantum operation sensitivity for different distance measures. We find that, among all usual distance measures, Bures fidelity is more sensitive to quantum operation than others. This may explain in some sense why fidelity is so useful in quantum information theory.

关 键 词：FIDELITY quantum operation 

分 类 号：O413[理学—理论物理] O157.5[理学—物理]