Broadcasting of entanglement via local copying

被引：98

作者：

Buzek, V

Vedral, V

Plenio, MB

Knight, PL

Hillery, M

机构：

[1] SLOVAK ACAD SCI, INST PHYS, BRATISLAVA 84228, SLOVAKIA

[2] CUNY HUNTER COLL, DEPT PHYS & ASTRON, NEW YORK, NY 10021 USA

来源：

PHYSICAL REVIEW A | 1997年 / 55卷 / 05期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevA.55.3327

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We show that inseparability of quantum states can be partially broadcasted (copied or cloned) with the help of local operations, i.e., distant parties sharing an entangled pair of spin-1/2 states can generate two pairs of partially nonlocally entangled states using only local operations. This procedure can be viewed as an inversion of quantum purification procedures.

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页码：3327 / 3332

页数：6

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