High dimension quantum information qudit instead of qubit: photon orbital angular momentum adjusts phase through holograms

https://www.eurekalert.org/news-releases/1065510

"quantum computing Variational Quantum Eigensolver algorithm combines Quantum Processing Unit/ Classical Processing Unit for faster computations... estimates interatomic bond distances/ ground state energies using fewer resources... overcomes error issues limiting scaling... implemented by 1 photon, reducing errors without complex quantum gates... superconductors, trapped-ion systems: development of new drugs/ materials... more accurate quantum computing without need for error-correction technique"

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https://www.miragenews.com/3d-printed-vortex-beam-generators-unveiled-1377320/