Quantum copying: A network

被引：171

作者：

Buzek, V

Braunstein, SL

Hillery, M

Bruss, D

机构：

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

[2] UNIV WALES, BANGOR LL57 1UT, GWYNEDD, WALES

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

[4] UNIV OXFORD, DEPT PHYS, CLARENDON LAB, OXFORD OX1 3PU, ENGLAND

来源：

PHYSICAL REVIEW A | 1997年 / 56卷 / 05期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevA.56.3446

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a network consisting of quantum gates that produces two imperfect copies of an arbitrary qubit. The quality of the copies does not depend on the input qubit. We also show that for a restricted class of inputs it is possible to use a very similar network to produce three copies instead of two. For qubits in this class, the copy quality is again independent of the input and is the-same as the quality of the copies produced by the two-copy network. [S1050-2947(97)09510-3].

引用

页码：3446 / 3452

页数：7

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