Heralded generation of ultrafast single photons in pure quantum states

被引：506

作者：

Mosley, Peter J. ^{[1
]}

Lundeen, Jeff S. ^{[1
]}

Smith, Brian J. ^{[1
]}

Wasylczyk, Piotr ^{[1
,2
]}

U'Ren, Alfred B. ^{[3
]}

Silberhorn, Christine ^{[4
]}

Walmsley, Ian A. ^{[1
]}

机构：

[1] Univ Oxford, Clarendon Lab, Oxford OX1 3PU, England

[2] Univ Warsaw, Inst Expt Phys, PL-00681 Warsaw, Poland

[3] Ctr Invest Cient & Educ Super Ensenada, Div Fis Aplicada, Ensenada 22800, Baja California, Mexico

[4] Max Planck Forsch Grp Opt, D-91058 Erlangen, Germany

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 13期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1103/PhysRevLett.100.133601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present an experimental demonstration of heralded single photons prepared in pure quantum states from a parametric down-conversion source. It is shown that, through controlling the modal structure of the photon pair emission, one can generate pairs in factorable states and thence eliminate the need for spectral filters in multiple-source interference schemes. Indistinguishable heralded photons were generated in two independent spectrally engineered sources and Hong-Ou-Mandel interference observed between them without spectral filters. The measured visibility of 94.4% sets a minimum bound on the mean photon purity.

引用

页数：4

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