Magic Entropy in Hybrid Spin-Boson Systems
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866908482153742336 |
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| author | Crew, Samuel Li, Ying-Lin Li, Heng-Hsi Chang, Po-Yao |
| author_facet | Crew, Samuel Li, Ying-Lin Li, Heng-Hsi Chang, Po-Yao |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_06018 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Magic Entropy in Hybrid Spin-Boson Systems Crew, Samuel Li, Ying-Lin Li, Heng-Hsi Chang, Po-Yao Strongly Correlated Electrons Quantum Physics 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. |
| title | Magic Entropy in Hybrid Spin-Boson Systems |
| topic | Strongly Correlated Electrons Quantum Physics |
| url | https://arxiv.org/abs/2508.06018 |