Year: 2026
Type: preprint
Abstract: Compact states embedded in a propagating band can carry quantum information, but finite-time transfer can populate modes outside their subspace. We show that a remote flux can refocus this amplitude without changing the transfer states or the motion-induced coupling out of their subspace. In a resonator ring, this separation is exact because both endpoints of the flux-bearing bond are nodes of every compact transfer state. For the same pulse, zero and refocusing flux both produce substantial excursions, but only the latter yields near-complete logical transfer. Interference between matrix amplitudes associated with different windings suppresses the endpoint error. Under matched control bounds, numerical optimization yields higher worst-input fidelity at the refocusing flux, providing a route to accurate transfer through coherent return.
Source: arXiv (Cornell University)
Authors: Meng, X. S., Liu, Y. S., Zhang, X. Z.
Institution: Tianjin Normal University
Language: English
Subfield: Artificial Intelligence
Field: Computer Science
Domain: Physical Sciences
Open Access status: green
Award: G5523828629
OpenAlex ID: W7212052601