Quantum Printing of Non-collinear Magnetic Textures Generation by the Laguerre–Gaussian Beam

Quantum printing enables light-matter interaction writing of topological spin textures, using structured light. We show that Laguerre–Gaussian pulses imprint non-collinear magnetic textures by printing the quantum numbers, e.g., spin and orbital angular momentum, via the beam’s full vector magnetic field. Unlike approaches that require interfacial or bulk chirality, current-driven torques, or thermal quenching, our route works without anisotropic interactions and offers spatial selectivity set by the optical phase mask. Micromagnetic simulations resolve topological charge density emerging during the pulse and reveal control through the beam’s topological properties and polarization. The process is THz ultrafast, nonthermal, and reversible, enabling optical erasure and rewriting. These results position structured-light quantum printing as a materials-agnostic write head for magnonics and motivate pump–probe imaging and threshold studies toward reconfigurable topological textures memories.