State transfer and entanglement with atomic ensembles in a one-dimensional fibre-coupled cavity chain

被引：3

作者：

Deng, Z. J. ^{[1
,2
]}

Liang, L-M ^{[1
]}

Chen, J-M ^{[1
]}

Wu, C-W ^{[1
]}

机构：

[1] Natl Univ Def Technol, Dept Phys, Changsha 410073, Hunan, Peoples R China

[2] Hunan Normal Univ, Minist Educ, Key Lab Low Dimens Quantum Struct & Quantum Contr, Changsha, Hunan, Peoples R China

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2010年 / 43卷 / 06期

关键词：

ADIABATIC PASSAGE; LINEAR OPTICS; PHASE GATE; QUANTUM;

D O I：

10.1088/0953-4075/43/6/065506

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A simple scheme is presented to realize state transfer and entanglement with atomic ensembles in a one-dimensional fibre-coupled cavity chain. It is immune to atomic spontaneous emission, cavity decay and fibre decay by adiabatic dark state evolution. Moreover, with atomic-ensemble qubits instead of single-atom qubits, the process can be speeded up, which is important in view of decoherence. The most interesting aspect is that it can realize state transfer, the two-node maximum entanglement state between any selected two nodes and the m-node W state among any selected m nodes, which might be very useful in selective participation in distributed quantum information processing.

引用

页数：6

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