Single-photon frequency down-conversion experiment

被引：60
|
作者：
Takesue, Hiroki [1 ,2 ]
机构：
[1] NTT Corp, NTT Basic Res Labs, Kanagawa 2430198, Japan
[2] Japan Sci & Technol Agcy, CREST, Kawaguchi, Saitama 3320012, Japan
来源：
PHYSICAL REVIEW A | 2010年 / 82卷 / 01期
关键词：
KEY DISTRIBUTION EXPERIMENT; UP-CONVERSION; QUANTUM; ENTANGLEMENT; COMMUNICATION; FIBER;
D O I：
10.1103/PhysRevA.82.013833
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report a single-photon frequency down-conversion experiment. Using the difference frequency generation process in a periodically poled lithium niobate waveguide, we successfully observed the phase-preserved frequency down-conversion of a coherent pulse train with an average photon number per pulse of <1, from the 0.7 mu m visible wavelength band to the 1.3 mu m telecom band. We expect this technology to become an important tool for flexible photonic quantum networking, including the realization of quantum repeater systems over optical fiber using atom-photon entanglement sources for the visible wavelength bands.
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页数：5
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