Journal
PHYSICAL REVIEW LETTERS
Volume 107, Issue 8, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.107.080404
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Funding
- Slovenian Research Agency [J1-2208]
- CONACyT [57334]
- [P1-0044]
- [UNAM-PAPIITIN117310]
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The channel induced by a complex system interacting strongly with a qubit is calculated exactly under the assumption of randomness of its eigenvectors. The resulting channel is represented as an isotropic time-dependent oscillation of the Bloch ball, leading to non-Markovian behavior, even in the limit of infinite environments. Two contributions are identified: one due to the density of states and the other due to correlations in the spectrum. Prototype examples, one for chaotic and the other for regular dynamics are explored.
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