Entanglement transfer from continuous variables to qubits

被引：81

作者：

Son, W ^{[1
]}

Kim, MS

Lee, J

Ahn, D

机构：

[1] Queens Univ Belfast, Sch Math & Phys, Belfast BT7 1NN, Antrim, North Ireland

[2] Seoul Natl Univ, Inst Quantum Informat Proc & Syst, Seoul, South Korea

[3] Sogang Univ, Dept Phys, Seoul 100611, South Korea

来源：

JOURNAL OF MODERN OPTICS | 2002年 / 49卷 / 10期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1080/09500340110120941

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We show that two qubits can be entangled by local interactions with an entangled two-mode continuous variable state. This is illustrated by the evolution of two two-level atoms interacting with a two-mode squeezed state. Two modes of the squeezed field are injected respectively into two spatially separate cavities and the atoms are then sent into the cavities to interact resonantly with the cavity field. We find that the atoms may be entangled even by a two-mode squeezed state which has been decohered while penetrating into the cavity.

引用

页码：1739 / 1746

页数：8