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Condensed Matter > Strongly Correlated Electrons

arXiv:2508.06018 (cond-mat)
[Submitted on 8 Aug 2025]

Title:Magic Entropy in Hybrid Spin-Boson Systems

Authors:Samuel Crew, Ying-Lin Li, Heng-Hsi Li, Po-Yao Chang
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Abstract:We introduce entropic measures to quantify non-classical resource in hybrid spin-boson systems. We discuss the stabilizer Rényi 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.
Comments: 15 pages, 3 figures
Subjects: Strongly Correlated Electrons (cond-mat.str-el); Quantum Physics (quant-ph)
Cite as: arXiv:2508.06018 [cond-mat.str-el]
  (or arXiv:2508.06018v1 [cond-mat.str-el] for this version)
  https://doi.org/10.48550/arXiv.2508.06018

Submission history

From: Samuel Crew [view email]
[v1] Fri, 8 Aug 2025 05:07:40 UTC (261 KB)
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