High-Dimensional Two-Photon Interference Effects in Spatial Modes

被引：54
作者：
Hiekkamaki, Markus [1 ]
Fickler, Robert [1 ]
机构：
[1] Tampere Univ, Phys Unit, Photon Lab, FI-33720 Tampere, Finland
来源：
PHYSICAL REVIEW LETTERS | 2021年 / 126卷 / 12期
基金：
芬兰科学院;
关键词：
ORBITAL ANGULAR-MOMENTUM; QUANTUM; ENTANGLEMENT; PHOTONS; STATES; LIGHT;
D O I：
10.1103/PhysRevLett.126.123601
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Two-photon interference is a fundamental quantum optics effect with numerous applications in quantum information science. Here, we study two-photon interference in multiple transverse-spatial modes along a single beam-path. Besides implementing the analog of the Hong-Ou-Mandel interference using a two-dimensional spatial-mode splitter, we extend the scheme to observe coalescence and anticoalescence in different three- and four-dimensional spatial-mode multiports. The operation within spatial modes, along a single beam path, lifts the requirement for interferometric stability and opens up new pathways of implementing linear optical networks for complex quantum information tasks.
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页数：7
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