Canonical quantum teleportation

被引：31

作者：

Yu, SX ^{[1
]}

Sun, CP ^{[1
]}

机构：

[1] Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China

来源：

PHYSICAL REVIEW A | 2000年 / 61卷 / 02期

关键词：

D O I：

10.1103/PhysRevA.61.022310

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Canonically conjugated observables such as position and momentum and phase and number an found to play a threefold role in quantum teleportation. First, the common eigenstate of two commuting canonical observables like phase difference and number sum provides the quantum channel between two systems. Second, a similar pair of canonical observables from another two systems is measured in the Bell-operator measurements. Finally, two translations generated by the canonically conjugated observables of a single system constitute the local unitary operation to recover the unknown state. In addition, the necessary and sufficient condition is presented for a reliable quantum teleportation of finite-level systems.

引用

页数：4

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