Relating quantum privacy and quantum coherence: An operational approach

被引：83

作者：

Devetak, I

Winter, A

机构：

[1] IBM Corp, Thomas J Watson Res Ctr, Yorktown Hts, NY 10598 USA

[2] Univ Bristol, Sch Math, Bristol BS8 1TW, Avon, England

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 08期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1103/PhysRevLett.93.080501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Given many realizations of a state or a channel as a resource, two parties can generate a secret key as well as entanglement. We describe protocols to perform the secret key distillation (as it turns out, with optimal rate). Then we show how to achieve optimal entanglement generation rates by "coherent" implementation of a class of secret key agreement protocols, proving the long-conjectured "hashing inequality."

引用

页码：080501 / 1

页数：4

共 27 条

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ACIN A, QUANTPH0303053

[2] Strong converse for identification via quantum channels [J].