Hybrid mechanics of coupled qubits.

Authors

Merfat Alzomai, Dmitrii V Shalashilin

Published in

The Journal of chemical physics. Volume 165. Issue 16. Oct 28, 2026.

Abstract

We find that a technique analogous to hybrid mechanics previously developed for Gaussian coherent states and molecular vibrations, can be extended to SU(2) coherent states describing coupled qubits. This formulation reveals a sparse structure of the propagator, leading to a computationally efficient scheme while maintaining numerical accuracy. As a result, the method enables simulations of larger qubit systems on classical computers. In particular, we demonstrate accurate real-time propagation for systems of up to 21 qubits, which would be computationally demanding using straightforward quantum-dynamics approaches.

PMID:
42956347
Bibliographic data and abstract were imported from PubMed on 30 Oct 2026.

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