Graduate theses
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Current Record: 7 of 196
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Title |
Dynamics of qubit chains coupled to non-Markovian reservoirs |
Alternative Title |
Δυναμική αλυσίδων qubit που συνδέονται με μη Μαρκοβιανές δεξαμενές |
Author
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Στέργου, Ιωάννης
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Thesis advisor
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Λαμπρόπουλος, Πέτρος
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Abstract |
We offer a comprehensive assessment of non-Markovianity (DNM) within an XX
chain of interacting qubits linked to a reservoir. Our investigation incorporates di-
verse quantum state distance (QSD) measures and considers various non-Markovian
spectral densities, including the Lorentzian squared. This approach aims to pro-
vide a robust evaluation of DNM. By constructing the density matrix of the open
chain without relying on a master equation, we analyze the dynamics of QSD mea-
sures between Markovian and non-Markovian damping scenarios. Recognizing that
conventional QSD measures often presume trace-preserving density matrices, we
adapt them to accommodate damped traces in open systems. Our findings not only
demonstrate consistent outcomes across different QSD measures but also reveal in-
tricate interactions between qubit-qubit coupling, non-Markovian damping, and en-
tanglement dynamics, particularly notable when exploring the implications of the
Lorentzian squared spectral density.
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Language |
English |
Issue date |
2024-07-11 |
Collection
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School/Department--School of Sciences and Engineering--Department of Physics--Graduate theses
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Type of Work--Graduate theses
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Permanent Link |
https://elocus.lib.uoc.gr//dlib/c/e/c/metadata-dlib-1718787339-852565-29346.tkl
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Views |
531 |