Quantum cloning and teleportation criteria for continuous quantum variables

被引：167

作者：

Grosshans, F ^{[1
]}

Grangier, P ^{[1
]}

机构：

[1] Inst Opt Theor & Appl, Lab Charles Fabry, F-91403 Orsay, France

来源：

PHYSICAL REVIEW A | 2001年 / 64卷 / 01期

关键词：

D O I：

10.1103/PhysRevA.64.010301

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We discuss the criteria presently used for evaluating the efficiency of quantum teleportation schemes for continuous variables. Using an argument based upon the difference between 1-to-2 quantum cloning (quantum duplication) and 1-to-infinity cloning (classical measurement), we show that a fidelity value larger than 2/3 warrants that the teleported state is the best possible remaining copy of the input state. This value has not been reached experimentally so far.

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页数：4

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