Broadening the bandwidth of entangled photons: A step towards the generation of extremely short biphotons

被引：48

作者：

Hendrych, M. ^{[1
]}

Shi, Xiaojuan ^{[1
,2
]}

Valencia, A. ^{[1
]}

Torres, Juan P. ^{[1
,2
]}

机构：

[1] ICFO Inst Ciencies Foton, Barcelona 08860, Spain

[2] Univ Politecn, Dept Signal Theory & Commun, Barcelona 080340, Spain

来源：

PHYSICAL REVIEW A | 2009年 / 79卷 / 02期

关键词：

high-speed optical techniques; nonlinear optics; quantum entanglement; quantum optics; PARAMETRIC DOWN-CONVERSION; NARROW-BAND; PULSE-COMPRESSION; DISPERSION;

D O I：

10.1103/PhysRevA.79.023817

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate a technique that allows full control of the bandwidth of entangled photons independently of the frequency band of interest and of the nonlinear crystal. We theoretically show that this technique allows generating nearly transform-limited biphotons with almost one octave of bandwidth (hundreds of terahertz) which corresponds to correlation times of just a few femtoseconds. The presented method becomes an enabling tool for attosecond entangled-photons quantum optics. The technique can also be used to generate paired photons with a very high degree of entanglement.

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页数：4

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