期刊
FRONTIERS IN PHYSICS
卷 9, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fphy.2021.752081
关键词
parametric down conversion; ring-core fiber; entangled photons; orbital angular momentum; perfect vortex beam
资金
- Chilean agency Fondo Nacional de Desarrollo Cientifico y Tecnologico (FONDECYT) [1190933, 1190901, 1200266, 1200859]
- Chilean agency ANID-Millennium Science Initiative Program [ICN17_012]
Research on increasing the coupling of photon pairs produced by parametric down-conversion by pumping the non-linear crystal with a perfect vortex mode with orbital angular momentum l rather than a gaussian mode has shown an almost three-fold increase in coupling and a nearly constant shape in the two-photon orbital angular momentum spectrum. This presents an interesting scenario for quantum state engineering.
The capacity of optical communication channels can be increased by space division multiplexing in structured optical fibers. Radial core optical fibers allows for the propagation of twisted light-eigenmodes of orbital angular momentum, which have attracted considerable attention for high-dimensional quantum information. Here we study the generation of entangled photons that are tailor-made for coupling into ring core optical fibers. We show that the coupling of photon pairs produced by parametric down-conversion can be increased by close to a factor of three by pumping the non-linear crystal with a perfect vortex mode with orbital angular momentum l, rather than a gaussian mode. Moreover, the two-photon orbital angular momentum spectrum has a nearly constant shape. This provides an interesting scenario for quantum state engineering, as pumping the crystal with a superposition of perfect vortex modes can be used in conjunction with the mode filtering properties of the ring core fiber to produce simple and interesting quantum states.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据