Efficient use of quantum resources for the transmission of a reference frame

被引：105

作者：

Chiribella, G

D'Ariano, GM

Perinotti, P

Sacchi, MF

机构：

[1] INFM, QUIT Quantum Informat Theory Grp, Unit Pavia, Dipartimento Fis A Volta, I-27100 Pavia, Italy

[2] Northwestern Univ, Ctr Photon Commun & Comp, Dept Elect & Comp Engn, Evanston, IL 60208 USA

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.93.180503

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We propose a covariant protocol for transmitting reference frames encoded on N spins, achieving sensitivity N-2 without the need of a preestablished reference frame and without using entanglement between sender and receiver. The protocol exploits the use of equivalent representations that were overlooked in the previous literature.

引用

页码：180503 / 1

页数：4

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