Orbital angular momentum and beyond in free-space optical communications

J Wang, J Liu, S Li, Y Zhao, J Du, L Zhu - Nanophotonics, 2022 - degruyter.com
Orbital angular momentum (OAM), which describes tailoring the spatial physical dimension
of light waves into a helical phase structure, has given rise to many applications in optical …

Orbital angular momentum lasers

A Forbes, L Mkhumbuza, L Feng - Nature Reviews Physics, 2024 - nature.com
Light can be tailored to carry angular momentum well beyond the restriction of its two spin
states, left-and right-circularly polarized light, by imbuing it with orbital angular momentum …

Spin-decoupled metasurface for simultaneous detection of spin and orbital angular momenta via momentum transformation

Y Guo, S Zhang, M Pu, Q He, J **, M Xu… - Light: Science & …, 2021 - nature.com
With inherent orthogonality, both the spin angular momentum (SAM) and orbital angular
momentum (OAM) of photons have been utilized to expand the dimensions of quantum …

Ultrawideband reflection-type metasurface for generating integer and fractional orbital angular momentum

LJ Yang, S Sun, EI Wei - IEEE Transactions on Antennas and …, 2019 - ieeexplore.ieee.org
Vortex beams carrying orbital angular momentum (OAM) are extensively studied owing to its
potential to expand channel capacity of microwave and optical communication. By utilizing …

A THz-OAM wireless communication system based on transmissive metasurface

H Yang, S Zheng, H Zhang, N Li, D Shen… - … on Antennas and …, 2023 - ieeexplore.ieee.org
With the development of various emerging technologies, the capacity of current wireless
communication system is gradually saturated, and terahertz (THz) and orbital angular …

100 Tbit/s free-space data link enabled by three-dimensional multiplexing of orbital angular momentum, polarization, and wavelength

H Huang, G **e, Y Yan, N Ahmed, Y Ren, Y Yue… - Optics letters, 2014 - opg.optica.org
We investigate the orthogonality of orbital angular momentum (OAM) with other multiplexing
domains and present a free-space data link that uniquely combines OAM-, polarization-, and …

Direct measurement of a 27-dimensional orbital-angular-momentum state vector

M Malik, M Mirhosseini, MPJ Lavery, J Leach… - Nature …, 2014 - nature.com
The measurement of a quantum state poses a unique challenge for experimentalists.
Recently, the technique of 'direct measurement'was proposed for characterizing a quantum …

Quantum digital spiral imaging

L Chen, J Lei, J Romero - Light: Science & Applications, 2014 - nature.com
We demonstrate that the combination of digital spiral imaging with high-dimensional orbital
angular momentum (OAM) entanglement can be used for efficiently probing and identifying …

Metrology with a twist: probing and sensing with vortex light

M Cheng, W Jiang, L Guo, J Li, A Forbes - Light: Science & Applications, 2025 - nature.com
Optical metrology is a well-established subject, dating back to early interferometry
techniques utilizing light's linear momentum through fringes. In recent years, significant …

Diverse terahertz wavefront manipulations empowered by the spatially interleaved metasurfaces

J Li, Z Yue, J Li, C Zheng, S Wang, M Li… - Science China …, 2023 - Springer
Optical metasurfaces have advanced approaches for manipulating light information in the
spatial domain, in which the spatially interleaved metasurfaces demonstrate the ability to …