Magic Entropy in Hybrid Spin-Boson Systems
Strongly Correlated Electrons
2025-08-11 v1 Quantum Physics
Abstract
We introduce entropic measures to quantify non-classical resource in hybrid spin-boson systems. We discuss the stabilizer R\'enyi entropy in the framework of phase space quantisation and define an analogous hybrid magic entropy and a mutual magic entropy that capture the distribution of quantum magic across spin and bosonic subsystems. We use these entropic measures to demonstrate two key phenomena: the detection of the superradiant phase transition in the Dicke model and the dynamics of magic in the Jaynes-Cummings model following a quench. We develop a Monte Carlo numerical scheme to enable practical computation in many-body examples.
Cite
@article{arxiv.2508.06018,
title = {Magic Entropy in Hybrid Spin-Boson Systems},
author = {Samuel Crew and Ying-Lin Li and Heng-Hsi Li and Po-Yao Chang},
journal= {arXiv preprint arXiv:2508.06018},
year = {2025}
}
Comments
15 pages, 3 figures