Time-resolved single-photon detection by femtosecond upconversion

被引：61

作者：

Kuzuc, Onur ^{[1
]}

Wong, Franco N. C. ^{[1
]}

Kurimura, Sunao ^{[2
]}

Tovstonog, Sergey ^{[2
]}

机构：

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

[2] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050044, Japan

来源：

OPTICS LETTERS | 2008年 / 33卷 / 19期

关键词：

D O I：

10.1364/OL.33.002257

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate a time-resolved single-photon detection technique based on ultrafast sum-frequency generation, providing femtosecond measurement capability for single photons in photonic quantum information processing. Noncollinear broadband upconversion in periodically poled MgO-doped stoichiometric lithium tantalate with all ultrafast pump and detection with a Si single-photon counter enable efficient detection of IR photons and temporal resolution of similar to 1.50 fs. We utilize the timing resolution to map the generation of efficiency profile along the propagation axis of a periodically poled KTiOPO4 crystal, revealing its local grating quality with millimeter resolution. We also apply the technique to two-photon coincidence measurements and directly demonstrate time anticorrelation between coincident-frequency entangled photons that are parametrically generated under extended phase-matching conditions. (C) 2008 Optical Society of America

引用

页码：2257 / 2259

页数：3

共 8 条

[1] Efficient single-photon counting at 1.55 μm by means of frequency upconversion [J].