Engineered optical nonlinearity for quantum light sources

被引：110

作者：

Branczyk, Agata M. ^{[1
]}

Fedrizzi, Alessandro ^{[1
]}

Stace, Thomas M.

Ralph, Tim C. ^{[1
]}

White, Andrew G. ^{[1
]}

机构：

[1] Univ Queensland, Dept Phys, Ctr Quantum Comp Technol, Brisbane, Qld 4072, Australia

来源：

OPTICS EXPRESS | 2011年 / 19卷 / 01期

关键词：

GENERATION; ENTANGLEMENT; STATE; INTERFERENCE;

D O I：

10.1364/OE.19.000055

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Many applications in optical quantum information processing benefit from careful spectral shaping of single-photon wave-packets. In this paper we tailor the joint spectral wave-function of photons created in parametric downconversion by engineering the nonlinearity profile of a poled crystal. We design a crystal with an approximately Gaussian nonlinearity profile and confirm successful wave-packet shaping by two-photon interference experiments. We numerically show how our method can be applied for attaining one of the currently most important goals of single-photon quantum optics, the creation of pure single photons without spectral correlations. (C) 2010 Optical Society of America

引用

页码：55 / 65

页数：11

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