Full-mode characterization of correlated photon pairs generated in spontaneous downconversion

被引：13

作者：

D'Errico, Alessio ^{[1
]}

Hufnagel, Felix ^{[1
]}

Miatto, Filippo ^{[1
,2
]}

Rezaee, Mohammadreza ^{[1
]}

Karimi, Ebrahim ^{[1
]}

机构：

[1] Univ Ottawa, Phys Dept, Adv Res Complex,25 Templeton, Ottawa, ON K1N 6N5, Canada

[2] Xanadu, 777 Bay St, Toronto, ON M5G 2C8, Canada

来源：

OPTICS LETTERS | 2021年 / 46卷 / 10期

关键词：

QUANTUM CORRELATIONS; STATES;

D O I：

10.1364/OL.424619

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Spontaneous parametric downconversion is the primary source to generate entangled photon pairs in quantum photonics laboratories. Depending on the experimental design, the generated photon pairs can be correlated in the frequency spectrum, polarization, position-momentum, and spatial modes. Exploring the spatial modes' correlation has hitherto been limited to the polar coordinates' azimuthal angle, and a few attempts to study Walsh mode's radial states. Here, we study the full-mode correlation, on a Laguerre-Gauss basis, between photon pairs generated in a type-I crystal. Furthermore, we explore the effect of a structured pump beam possessing different spatial modes onto bi-photon spatial correlation. Finally, we use the capability to project over arbitrary spatial mode superpositions to perform the bi-photon state's full quantum tomography in a 16-dimensional subspace. (C) 2021 Optical Society of America

引用

页码：2388 / 2391

页数：4