Experimentally measuring the mode indices of Laguerre-Gaussian beams by weak measurement

被引：14

作者：

Zhu, Jing ^{[1
,2
]}

Zhang, Pei ^{[2
,3
]}

Wang, Feiran ^{[2
]}

Wang, Yunlong ^{[2
]}

Li, Qichang ^{[2
]}

Liu, Ruifeng ^{[2
]}

Wang, Jinwen ^{[2
]}

Gao, Hong ^{[2
]}

Li, Fuli ^{[2
]}

机构：

[1] Suzhou Vocat Univ, Acad Journal Ctr, Suzhou 215104, Peoples R China

[2] Xi An Jiao Tong Univ, Lab Quantum Informat & Quantum Optoelect Devices, Xian 710049, Shaanxi, Peoples R China

[3] Univ Sci & Technol China, Chinese Acad Sci, Key Lab Quantum Informat, Hefei, Peoples R China

来源：

OPTICS EXPRESS | 2021年 / 29卷 / 04期

基金：

中国国家自然科学基金;

关键词：

ORBITAL ANGULAR-MOMENTUM; LIGHT; ENTANGLEMENT; DIFFRACTION;

D O I：

10.1364/OE.416671

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

As a special experimental technique, weak measurements extract very little information from the measured system and does not cause the measured state to collapse. When coupling the Laguerre-Gaussian (LG) state with a well-defined pre- and post-selected system of a weak measurement process, there will be an indirect interconnection between the expected value of coordinate operators of the final state and the mode indices of the measured LG state. The mode of the light is impacted very slightly after the weak measurement. Based on this we propose an experiment scheme and have managed to experimentally measure the mode indices of LG beams spanning from l = -6 to l = +6, p = 0 to p = +8 accurately with the final intensity distributions approximatly at their origin. (c) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：5419 / 5426

页数：8

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