Eternal non-Markovianity of qubit maps
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arXiv
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866918107515191296 |
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| author | Jagadish, Vinayak Srikanth, R. |
| author_facet | Jagadish, Vinayak Srikanth, R. |
| contents | As is well known, unital Pauli maps can be eternally non-CP-divisible. In contrast, here we show that in the case of non-unital maps, eternal non-Markovianity in the non-unital part is ruled out. In the unital case, the eternal non-Markovianity can be obtained by a convex combination of two dephasing semigroups, but not all three of them. We study these results and ramifications arising from them. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_06846 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Eternal non-Markovianity of qubit maps Jagadish, Vinayak Srikanth, R. Quantum Physics As is well known, unital Pauli maps can be eternally non-CP-divisible. In contrast, here we show that in the case of non-unital maps, eternal non-Markovianity in the non-unital part is ruled out. In the unital case, the eternal non-Markovianity can be obtained by a convex combination of two dephasing semigroups, but not all three of them. We study these results and ramifications arising from them. |
| title | Eternal non-Markovianity of qubit maps |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2501.06846 |