Efficient conditional preparation of high-fidelity single photon states for fiber-optic quantum networks

被引：145
作者：
U'Ren, AB
Silberhorn, C
Banaszek, K
Walmsley, IA
机构：
[1] Univ Oxford, Clarendon Lab, Oxford OX1 3PU, England
[2] Univ Rochester, Inst Opt, Rochester, NY 14627 USA
来源：
PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 09期
关键词：
D O I：
10.1103/PhysRevLett.93.093601
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Highly correlated photons or, accordingly, high-fidelity single-photon states are a prerequisite for closing detection loopholes in experimental tests of local realism and implementing scalable linear optical quantum computation. We demonstrate a parametric down-conversion source exhibiting a conditional detection efficiency of 51% (with corresponding preparation efficiency of 85%) and extraordinarily high detection rates of up to 8.5x10(5) coincidences/(s mW). We exploit a novel type-II phase matching configuration in a microstructured waveguide in conjunction with an ultrashort pump.
引用
收藏
页码：093601 / 1
页数：4
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