A sharp continuity estimate for the von Neumann entropy

被引：175

作者：

Audenaert, Koenraad M. R. ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci & Technol, Inst Math Sci, London SW7 2PG, England

来源：

JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL | 2007年 / 40卷 / 28期

关键词：

D O I：

10.1088/1751-8113/40/28/S18

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We derive an inequality relating the entropy difference between two quantum states to their trace norm distance, sharpening a well-known inequality due to Fannes. In our inequality, equality can be attained for every prescribed value of the trace norm distance.

引用

页码：8127 / 8136

页数：10

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