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
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收藏
页码：55 / 65
页数：11
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