Scalable unitary computing using time-parallelized photonic lattices.

ABSTRACT: Exploiting alternative physical dimensions beyond the spatial domain has been intensively explored to improve the scalability in photonic computing. One approach leverages dynamical systems for time-domain computation, enabling universal and reconfigurable unitary operations. Although this method yields O(N) scaling in both device footprint and gate count, the required computation time increases by O(N ²), which hinders practical implementation due to limitations in quality factors and modulation speeds of optical elements. Here, we propose time-parallelized photonic lattices that achieve O(N) time scalability while preserving the O(N) spatial scaling. We devise a pseudospinor buffer operation that temporally stores the opt

SUBMITTER: Park H 

PROVIDER: S-EPMC12717889 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature