Statistics of Narrow-Band Single Photons for Quantum Memories Generated by Ultrabright Cavity-Enhanced Parametric Down-Conversion

被引：102
|
作者：
Scholz, Matthias [1 ]
Koch, Lars [1 ]
Benson, Oliver [1 ]
机构：
[1] Humboldt Univ, Dept Phys, Nanoopt Grp, D-10117 Berlin, Germany
来源：
PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 06期
关键词：
LINEAR OPTICS; OSCILLATION;
D O I：
10.1103/PhysRevLett.102.063603
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Narrow-band single photons represent an important resource for quantum memories due to their efficient interaction with atomic resonances. In this Letter, we report on the generation of photons with 3 MHz linewidth by cavity-enhanced parametric down-conversion and demonstrate direct proof of their single-photon character by detection of heralding idler photons. Compared to a Poissonian source, a suppression of higher-order photon numbers by nearly 2 orders of magnitude could be achieved. Moreover, the brightness of our source exceeds previous realizations by more than a factor of 100.
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页数：4
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