Correlated and Critical Phenomena in Multipartite Quantum Non-Markovianity
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arXiv
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| Autores principales: | , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866915174354518016 |
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| author | González, Ignacio Rivas, Ángel |
| author_facet | González, Ignacio Rivas, Ángel |
| contents | We study non-Markovianity in the exact dynamics of two two-level atoms in a resonant cavity. We find a critical behavior in the form of a Markovian to non-Markovian transition at a finite interatomic distance and a discontinuity in the limit of infinitely close atoms. Actually, in this highly correlated regime, we find that non-Markovianity always arises if the system size exceeds a critical threshold. To this end, a non-singular, additive non-Markovian measure with appropriate asymptotic behavior is formulated. These results show how inter-subsystem distance and system size can act as precise controls for modulating memory effects in multipartite open quantum systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_14674 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Correlated and Critical Phenomena in Multipartite Quantum Non-Markovianity González, Ignacio Rivas, Ángel Quantum Physics We study non-Markovianity in the exact dynamics of two two-level atoms in a resonant cavity. We find a critical behavior in the form of a Markovian to non-Markovian transition at a finite interatomic distance and a discontinuity in the limit of infinitely close atoms. Actually, in this highly correlated regime, we find that non-Markovianity always arises if the system size exceeds a critical threshold. To this end, a non-singular, additive non-Markovian measure with appropriate asymptotic behavior is formulated. These results show how inter-subsystem distance and system size can act as precise controls for modulating memory effects in multipartite open quantum systems. |
| title | Correlated and Critical Phenomena in Multipartite Quantum Non-Markovianity |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2406.14674 |