Two-photon coincident-frequency entanglement via extended phase matching -: art. no. 083601

被引：92

作者：

Kuzucu, O ^{[1
]}

Fiorentino, M ^{[1
]}

Albota, MA ^{[1
]}

Wong, FNC ^{[1
]}

Kärtner, FX ^{[1
]}

机构：

[1] MIT, Elect Res Lab, Cambridge, MA 02139 USA

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.94.083601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate a new class of frequency-entangled states generated via spontaneous parametric down-conversion under extended phase-matching conditions. Biphoton entanglement with coincident signal and idler frequencies is observed over a broad bandwidth in periodically poled KTiOPO4. We demonstrate high visibility in Hong-Ou-Mandel interferometric measurements under pulsed pumping without spectral filtering, which indicates excellent frequency indistinguishability between the down-converted photons. The coincident-frequency entanglement source is useful for quantum information processing and quantum measurement applications.

引用

页数：4

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