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Quantum Simulation
Robustness of Off-Axis Electron Vortices in Nonuniform Magnetic Fields
arXiv
Authors: Hui-Dong Huang, Qi Meng, Zhi-Bin Wang, Liang Lu, Jian Chen, Li-Ping Zou
Year
2026
Paper ID
74133
Status
Preprint
Abstract Read
~2 min
Abstract Words
59
Citations
N/A
Abstract
Rotational symmetry protects the topological charge of on-axis electron vortices but not of off-axis vortices. We identify an additional SU(1,1) dynamical invariant that guarantees conservation of their intrinsic orbital angular momentum within the near-axis approximation. First-principles simulations of an off-axis electron vortex traversing a Glaser lens confirm this prediction, establishing a robust transport mechanism in axisymmetric nonuniform magnetic fields.
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- This paper contributes to the Quantum Simulation research area in the Quantum Articles archive.
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- Rotational symmetry protects the topological charge of on-axis electron vortices but not of off-axis vortices.
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