Observation of non-diffracting behavior at the single-photon level

被引：21

作者：

Cruz-Ramirez, Hector ^{[1
]}

Ramirez-Alarcon, Roberto ^{[1
,2
]}

Morelos, Francisco J. ^{[1
]}

Quinto-Su, Pedro A. ^{[1
]}

Gutierrez-Vega, Julio C. ^{[3
]}

U'Ren, Alfred B. ^{[1
]}

机构：

[1] Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Mexico City 04510, DF, Mexico

[2] Univ Guanajuato, Div Ciencias & Ingn, Guanajuato 37150, Mexico

[3] Tecnol Monterrey, Photon & Math Opt Grp, Monterrey 64849, Mexico

来源：

OPTICS EXPRESS | 2012年 / 20卷 / 28期

关键词：

PARAMETRIC DOWN-CONVERSION; ANGULAR SPECTRUM; BEAMS;

D O I：

10.1364/OE.20.029761

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate the generation of non-diffracting heralded single photons, i.e. which are characterized by a single-photon transverse intensity distribution which remains essentially unchanged over a significant propagation distance. For this purpose we have relied on the process of spontaneous parametric downconversion (SPDC) for the generation of signal and idler photon pairs, where our SPDC crystal is pumped by a Bessel-Gauss (BG) beam. Our experiment shows that the well-understood non-diffracting behavior of a BG beam may be directly mapped to the signal-mode, single photons heralded by the detection of a single idler photon. In our experiment, the heralded single photon is thus arranged to be non-diffracting without the need for projecting its single-photon transverse amplitude, post-generation, in any manner. (C)2012 Optical Society of America

引用

页码：29761 / 29768

页数：8

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