Entangled coherent states: Teleportation and decoherence

被引：451

作者：

van Enk, SJ

Hirota, O

机构：

[1] Bell Labs, Murray Hill, NJ 07974 USA

[2] Tamagawa Univ, Res Ctr Quantum Commun, Tokyo, Japan

来源：

PHYSICAL REVIEW A | 2001年 / 64卷 / 02期

关键词：

D O I：

10.1103/PhysRevA.64.022313

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

When a superposition (\alpha]-\-alpha]) of two coherent states with opposite phase falls upon a 50-50 beam splitter, the resulting state is entangled. Remarkably, the amount of entanglement is exactly 1 ebit, irrespective of alpha, as was recently discovered by Hirota and Sasaki [LANL e-print quant-ph/0101018]. Here we discuss decoherence properties of such states and give a simple protocol that teleports one qubit encoded in Schrodinger cat states.

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页码：1 / 6

页数：6

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