Conditional preparation of high-fidelity single-photon wavepackets

被引：0
|
作者：
U'Ren, AB [1 ]
Silberhorn, C [1 ]
Banaszek, K [1 ]
Ball, J [1 ]
Achilles, D [1 ]
Walmsley, IA [1 ]
机构：
[1] Univ Oxford, Clarendon Lab, Oxford OX1 3BU, England
来源：
QUANTUM COMMUNICATION, MEASUREMENT AND COMPUTING | 2004年 / 734卷
关键词：
D O I：
暂无
中图分类号：
TP301 [理论、方法];
学科分类号：
081202 ;
摘要：
The reliable generation of true single-photon wavepackets with well-defined modal structure is a crucial ingredient for the realization of linear optical quantum computing. We have implemented a highly efficient waveguided parametric downconversion source pumped by ultrashort pulses, which is characterized by the spatial decoupling of the signal and idler photon while exhibiting a conditional detection efficiency of 51%, corresponding to a preparation efficiency of 85%. We have performed various tests to confirm the single-photon character of the conditionally prepared state.
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页码：358 / 361
页数：4
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