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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2510.15726 |
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| _version_ | 1866908678611795968 |
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| author | Maioli, Alan C. Curado, Evaldo M. F. Gazeau, Jean-Pierre Koide, Tomoi |
| author_facet | Maioli, Alan C. Curado, Evaldo M. F. Gazeau, Jean-Pierre Koide, Tomoi |
| contents | We present two complementary approaches to the GKSL equation for an open qubit. The first, based on linearity, yields solutions illustrated by mixed states trajectories in the Bloch ball, including non-random asymptotic fixed points, and exceptional points. The second, exploiting the SU(2) symmetry, leads to a nonlinear dynamical system that separates angular dynamics from radial dissipation. This symmetry-based perspective offers a promising route toward generalisation to open qudits. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_15726 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | The Geometry of Qubit Decoherence: Linear vs. Nonlinear Dynamics in the Bloch Ball Maioli, Alan C. Curado, Evaldo M. F. Gazeau, Jean-Pierre Koide, Tomoi Quantum Physics We present two complementary approaches to the GKSL equation for an open qubit. The first, based on linearity, yields solutions illustrated by mixed states trajectories in the Bloch ball, including non-random asymptotic fixed points, and exceptional points. The second, exploiting the SU(2) symmetry, leads to a nonlinear dynamical system that separates angular dynamics from radial dissipation. This symmetry-based perspective offers a promising route toward generalisation to open qudits. |
| title | The Geometry of Qubit Decoherence: Linear vs. Nonlinear Dynamics in the Bloch Ball |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2510.15726 |