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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/230958
Noise Simulation of a Tunable Fluxonium : Modeling and Analysis of Markovian and Non-Markovian Effects with Open Quantum Systems
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This thesis presents an open-system simulator of decoherence in a tunable fluxonium device. The simulator incorporates both standard Markovian noise channels and an additional set of near-resonant two-level-system (TLS) defects as explicit quantum degrees of freedom to capture possible memory effects.
The fluxonium is modeled as a qutrit to account for leakage, and its dynamics are simulated both at fixed flux biases and along a time-dependent annealing
schedule, with the results compared to the corresponding Markovian dynamics. At fixed bias, the effect of the explicit TLSs depends strongly on the operating point: it is negligible where the relevant charge matrix elements are suppressed, but can reduce T1 by over an order of magnitude and produce non-exponential decay where the qutrit couples strongly to the defects. Along the schedule considered here, a coherent operating window is identified in which the evolution is both adiabatic and coherence-preserving; within it, TLS memory effects do not become significant, and Markovian rate estimates suffice to choose the annealing time.
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Màster Oficial de Ciència i Tecnologia Quàntiques / Quantum Science and Technology, Facultat de Física, Universitat de Barcelona. Curs: 2025-2026. Tutors: Ana Palacios, Arnau Riera
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ARIBÓ HERRERA, Marta Xiulan. Noise Simulation of a Tunable Fluxonium : Modeling and Analysis of Markovian and Non-Markovian Effects with Open Quantum Systems. [consulted: 25 of July of 2026]. Available at: https://hdl.handle.net/2445/230958