On quantum coding for ensembles of mixed states

被引：28

作者：

Barnum, H

Caves, CM

Fuchs, CA

Jozsa, R

Schumacher, B

机构：

[1] Univ Bristol, Dept Comp Sci, Bristol BS8 1UB, Avon, England

[2] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA

[3] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[4] Kenyon Coll, Dept Phys, Gambier, OH 43022 USA

来源：

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL | 2001年 / 34卷 / 35期

关键词：

D O I：

10.1088/0305-4470/34/35/304

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We consider the problem of optimal asymptotically faithful compression for ensembles of mixed quantum states. Although the optimal rate is unknown, we prove upper and lower bounds and describe a series of illustrative examples of compression of mixed states. We also discuss a classical analogue of the problem.

引用

页码：6767 / 6785

页数：19

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[21] CONVEX TRACE FUNCTIONS AND WIGNER-YANASE-DYSON CONJECTURE [J].