Photon total angular momentum manipulation

Lang Li; Yingchi Guo; Zhichao Zhang; Zijun Shang; Chen Li; Jiaqi Wang; Liliang Gao; Lan Hai; Chunqing Gao; Shiyao Fu

doi:10.1117/1.AP.5.5.056002

Photon total angular momentum manipulation

Lang Li, Yingchi Guo, Zhichao Zhang, Zijun Shang, Chen Li, Jiaqi Wang, Liliang Gao, Lan Hai, Chunqing Gao, Shiyao Fu^*

^*Corresponding author for this work

School of Optics and Photonics

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

As an inherent degree of freedom, total angular momentum (TAM) of photons consisting of spin angular momentum and orbital angular momentum has inspired many advanced applications and attracted much attention in recent years. Probing TAM and tailoring beam's TAM spectrum on demand are of great significance for TAM-based scenarios. We propose both theoretically and experimentally a TAM processor enabling tunable TAM manipulation. Such a processor consists of a set of quasi-symmetric units, and each unit is composed of a couple of diffraction optical elements fabricated through polymerized liquid crystals. Forty-two single TAM states are experimentally employed to prove the concept. The favorable results illustrate good TAM state selection performance, which makes it particularly attractive for high-speed large-capacity data transmission, optical computing, and high-security photon encryption systems.

Original language	English
Article number	056002
Journal	Advanced Photonics
Volume	5
Issue number	5
DOIs	https://doi.org/10.1117/1.AP.5.5.056002
Publication status	Published - 1 Sept 2023

Keywords

orbital angular momentum
spin angular momentum
total angular momentum tailoring
vortex beams

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title = "Photon total angular momentum manipulation",

abstract = "As an inherent degree of freedom, total angular momentum (TAM) of photons consisting of spin angular momentum and orbital angular momentum has inspired many advanced applications and attracted much attention in recent years. Probing TAM and tailoring beam's TAM spectrum on demand are of great significance for TAM-based scenarios. We propose both theoretically and experimentally a TAM processor enabling tunable TAM manipulation. Such a processor consists of a set of quasi-symmetric units, and each unit is composed of a couple of diffraction optical elements fabricated through polymerized liquid crystals. Forty-two single TAM states are experimentally employed to prove the concept. The favorable results illustrate good TAM state selection performance, which makes it particularly attractive for high-speed large-capacity data transmission, optical computing, and high-security photon encryption systems.",

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AU - Li, Lang

AU - Guo, Yingchi

AU - Zhang, Zhichao

AU - Shang, Zijun

AU - Li, Chen

AU - Wang, Jiaqi

AU - Gao, Liliang

AU - Hai, Lan

AU - Gao, Chunqing

AU - Fu, Shiyao

N1 - Publisher Copyright: © The Authors. Published by SPIE and CLP under a Creative Commons Attribution 4.0 International License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

PY - 2023/9/1

Y1 - 2023/9/1

N2 - As an inherent degree of freedom, total angular momentum (TAM) of photons consisting of spin angular momentum and orbital angular momentum has inspired many advanced applications and attracted much attention in recent years. Probing TAM and tailoring beam's TAM spectrum on demand are of great significance for TAM-based scenarios. We propose both theoretically and experimentally a TAM processor enabling tunable TAM manipulation. Such a processor consists of a set of quasi-symmetric units, and each unit is composed of a couple of diffraction optical elements fabricated through polymerized liquid crystals. Forty-two single TAM states are experimentally employed to prove the concept. The favorable results illustrate good TAM state selection performance, which makes it particularly attractive for high-speed large-capacity data transmission, optical computing, and high-security photon encryption systems.

AB - As an inherent degree of freedom, total angular momentum (TAM) of photons consisting of spin angular momentum and orbital angular momentum has inspired many advanced applications and attracted much attention in recent years. Probing TAM and tailoring beam's TAM spectrum on demand are of great significance for TAM-based scenarios. We propose both theoretically and experimentally a TAM processor enabling tunable TAM manipulation. Such a processor consists of a set of quasi-symmetric units, and each unit is composed of a couple of diffraction optical elements fabricated through polymerized liquid crystals. Forty-two single TAM states are experimentally employed to prove the concept. The favorable results illustrate good TAM state selection performance, which makes it particularly attractive for high-speed large-capacity data transmission, optical computing, and high-security photon encryption systems.

KW - orbital angular momentum

KW - spin angular momentum

KW - total angular momentum tailoring

KW - vortex beams

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Photon total angular momentum manipulation

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Keywords

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