Mitigation of crosstalk based on CSO-ICA in free space orbital angular momentum multiplexing systems

2018 ◽  
Vol 423 ◽  
pp. 200-206
Author(s):  
Dengke Xing ◽  
Jianfei Liu ◽  
Xiangye Zeng ◽  
Jia Lu ◽  
Ziyao Yi
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Free Space ◽  
Multiplexing Systems

scholarly journals Perspectives on advances in high-capacity, free-space communications using multiplexing of orbital-angular-momentum beams

APL Photonics ◽  
2021 ◽  
Vol 6 (3) ◽  
pp. 030901
Author(s):  
Alan E. Willner ◽  
Zhe Zhao ◽  
Cong Liu ◽  
Runzhou Zhang ◽  
Haoqian Song ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Free Space ◽  
High Capacity ◽  
Space Communications

scholarly journals Origins and demonstrations of electrons with orbital angular momentum

2017 ◽  
Vol 375 (2087) ◽  
pp. 20150434 ◽  
Author(s):  
Benjamin J. McMorran ◽  
Amit Agrawal ◽  
Peter A. Ercius ◽  
Vincenzo Grillo ◽  
Andrew A. Herzing ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Free Space ◽  
Rest Mass ◽  
Wave Functions ◽  
Matter Wave ◽  
Optical Manipulation ◽  
Electron Wave ◽  
Mechanical Wave ◽  
Twisted Light

The surprising message of Allen et al. (Allen et al. 1992 Phys. Rev. A 45 , 8185 ( doi:10.1103/PhysRevA.45.8185 )) was that photons could possess orbital angular momentum in free space, which subsequently launched advancements in optical manipulation, microscopy, quantum optics, communications, many more fields. It has recently been shown that this result also applies to quantum mechanical wave functions describing massive particles (matter waves). This article discusses how electron wave functions can be imprinted with quantized phase vortices in analogous ways to twisted light, demonstrating that charged particles with non-zero rest mass can possess orbital angular momentum in free space. With Allen et al. as a bridge, connections are made between this recent work in electron vortex wave functions and much earlier works, extending a 175 year old tradition in matter wave vortices. This article is part of the themed issue ‘Optical orbital angular momentum’.

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