Fast entanglement distribution with atomic ensembles and fluorescent detection

被引:17
作者
Brask, J. B. [1 ]
Jiang, L. [2 ,3 ]
Gorshkov, A. V. [2 ]
Vuletic, V. [4 ]
Sorensen, A. S. [1 ]
Lukin, M. D. [2 ]
机构
[1] Univ Copenhagen, Niels Bohr Inst, QUANTOP, DK-2100 Copenhagen O, Denmark
[2] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA
[3] CALTECH, Inst Quantum Informat, Pasadena, CA 91125 USA
[4] MIT, Harvard MIT Ctr Ultracold Atoms, Dept Phys, Cambridge, MA 02139 USA
来源
PHYSICAL REVIEW A | 2010年 / 81卷 / 02期
基金
美国国家科学基金会; 新加坡国家研究基金会;
关键词
D O I
10.1103/PhysRevA.81.020303
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Quantum repeaters based on atomic ensemble quantum memories are promising candidates for achieving scalable distribution of entanglement over long distances. Recently, important experimental progress has been made toward their implementation. However, the entanglement rates and scalability of current approaches are limited by relatively low retrieval and single-photon detector efficiencies. We propose a scheme which makes use of fluorescent detection of stored excitations to significantly increase the efficiency of connection and hence the rate. Practical performance and possible experimental realizations of the new protocol are discussed.
引用
收藏
页数:4
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