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Among the optical degrees of freedom, the orbital angular momentum of light provides unique properties, including mechanical torque action with applications for light manipulation, enhanced sensitivity in imaging techniques and potential…

Quantum Physics · Physics 2014-03-03 A. Nicolas , L. Veissier , L. Giner , E. Giacobino , D. Maxein , J. Laurat

We report on an imaging-inspired measurement of orbital angular momentum (OAM) using only a simple tilted lens and an Intensified Charged Coupled Device (ICCD) camera, allowing us to monitor the propagation of OAM structured photons over…

We introduce a new method to generate and tune the optical orbital angular momentum of a focused Gaussian beam passing through the optical superlattice under the electro-optic effect. The orbital angular momentum (OAM) arises from the curl…

Optics · Physics 2011-08-29 Jie Wang , Jianhong Shi , Linghao Tian , Xianfeng Chen

We show that optical beams with orbital angular momentum (OAM) can be generated even with incomplete computer generated holograms (CGH). These holograms are made such that random portions of it do not contain any information. We observe…

Orbital angular momentum associated with the helical phase-front of optical beams provides an unbounded \qo{space} for both classical and quantum communications. Among the different approaches to generate and manipulate orbital angular…

In this letter, we investigate the effect of orbital angular momentum (OAM) on elastic photon-photon scattering in vacuum for the first time. We define exact solutions to the vacuum electro-magnetic wave equation which carry OAM. Using…

Quantum entanglement shared between more than two particles is essential to foundational questions in quantum mechanics, and upcoming quantum information technologies. So far, up to 14 two-dimensional qubits have been entangled, and an open…

Quantum Physics · Physics 2016-02-18 B. C. Hiesmayr , M. J. A. de Dood , W. Löffler

The problem of light waves interaction with charged particles becomes more and more complex starting with the case of plane waves, where the analytical solution is well known, to more natural, though more complicated situations which…

Plasma Physics · Physics 2024-07-22 Egor Dmitriev , Philipp Korneev

The spatial modes of light, carrying a quantized amount of orbital angular momentum (OAM), is one of the excellent candidates that provides access to high-dimensional quantum states, which essentially makes it promising towards building…

Quantum Physics · Physics 2021-07-27 Chengyuan Wang , Ya Yu , Yun Chen , Jinwen Wang , Xin Yang , Shuwei Qiu , Dong Wei , Mingtao Cao , Hong Gao , Fuli Li

There is recurrent interest in the orbital angular momentum (OAM) conveyed by optical vortices, which are structured beams with a helically twisted wavefront. Particular significance is attached to the issue of how, in its interactions with…

Optics · Physics 2019-02-27 Kayn A. Forbes , David L. Andrews

We explore the evolution of vortex light in the presence of gravitational waves (GWs) and demonstrate that the quantized orbital angular momentum (OAM) states can make transitions to other states due to the GWs. The interaction is…

General Relativity and Quantum Cosmology · Physics 2026-04-08 Haorong Wu , Xilong Fan , Lixiang Chen

We implement an interferometric method using two angular slits to measure the orbital angular momentum (OAM) mode spectrum of a partially coherent field. As the angular separation of the slits changes, an interference pattern for a…

Optics · Physics 2012-12-06 Mehul Malik , Sangeeta Murugkar , Jonathan Leach , Robert W. Boyd

Recent advancements in wavefront shaping techniques have facilitated the study of complex structured light's propagation with orbital angular momentum (OAM) within various media. The introduction of a spiral phase modulation to the…

Optics · Physics 2024-10-02 Igor Meglinski , Ivan Lopushenko , Anton Sdobnov , Alexander Bykov

The orbital angular momentum (OAM) of photons is a promising degree of freedom for high-dimensional quantum key distribution (QKD). However, effectively mitigating the adverse effects of atmospheric turbulence is a persistent challenge in…

Signal Processing · Electrical Eng. & Systems 2020-06-24 Jiapeng Zhao , Yiyu Zhou , Boris Braverman , Cong Liu , Kai Pang , Nicholas K. Steinhoff , Glenn A. Tyler , Alan E. Willner , Robert W. Boyd

On-chip photon sources carrying orbital angular momentum (OAM) are in demand for high-capacity optical information processing in both classical and quantum regimes. However, currently-exploited integrated OAM sources have been primarily…

Dynamic generation of obitial angular momentum (OAM) of light has enabled complex manipulation of micro-particles, high-dimension quantum entanglement and optical communication. We report an analog vortex transmitter made of one bilaterally…

Optics · Physics 2015-04-09 Kun Huang , Hong Liu , M. Q. Mehmood , S. Mei , A. Danner , Jinghua Teng , Chengwei Qiu

We present a dynamic interferometry to measure the orbital angular momentum (OAM) of beams. An opaque screen with two air slits is employed, which can be regarded as the Youngs double-pinhole interference. When the OAM beams with an annular…

Optics · Physics 2014-10-08 Dong Jianji , Zhou Hailong , Zhang Xinliang

Light carrying orbital angular momentum (OAM) has been shown to be of use in a disparate range of fields ranging from astronomy to optical trapping, and as a promising new dimension for multiplexing signals in optical communications and…

Optics · Physics 2017-04-07 Shibiao Wei , Stuart K. Earl , Xiao-Cong Yuan , Shan Shan Kou , Jiao Lin

We address the possibility of using even/odd states of orbital angular momentum (OAM) of photons for the quantum information tasks. Single photon qubit states and two photon entangled states in even/odd basis of OAM are considered. We…

Quantum Physics · Physics 2017-05-24 Chithrabhanu Perumangatt , Nijil Lal , Ali Anwar , Salla Gangi Reddy , R. P. Singh

We developed a method to characterize arbitrary superpositions of light orbital angular momentum (OAM) with high fidelity by using astigmatic tomography and machine learning processing. In order to define each superposition unequivocally,…

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