Quantum union bounds for sequential projective measurements

被引：19
|
作者：
Gao, Jingliang [1 ]
机构：
[1] Xidian Univ, State Key Lab Integrated Serv Networks, Xian 710071, Peoples R China
来源：
PHYSICAL REVIEW A | 2015年 / 92卷 / 05期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1103/PhysRevA.92.052331
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present two quantum union bounds for sequential projective measurements. These bounds estimate the disturbance accumulation and probability of outcomes when the measurements are performed sequentially. These results are based on a trigonometric representation of quantum states and should have wide application in quantum information theory for information-processing tasks such as communication and state discrimination, and perhaps even in the analysis of quantum algorithms.
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页数：6
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