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Pure dephasing due to damped bistable quantum impurities (Articolo in rivista)
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- Label
- Pure dephasing due to damped bistable quantum impurities (Articolo in rivista) (literal)
- Anno
- 2006-01-01T00:00:00+01:00 (literal)
- Alternative label
Paladino, E; Sassetti, M; Falci, G; Weiss, U (2006)
Pure dephasing due to damped bistable quantum impurities
in Chemical physics (Print)
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- Paladino, E; Sassetti, M; Falci, G; Weiss, U (literal)
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- ISI Web of Science (WOS) (literal)
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- Ist Nazl Fis Mat, MATIS, Catania, Italy; Univ Catania, Dipartimento Metodol Fis & Chim, DMFCI, I-95125 Catania, Italy; Univ Genoa, INFM Lamia, Dipartimento Fis, I-16146 Genoa, Italy; Univ Stuttgart, Inst Theoret Phys 2, D-7000 Stuttgart, Germany (literal)
- Titolo
- Pure dephasing due to damped bistable quantum impurities (literal)
- Abstract
- We study the dynamics of a spin (qubit) coupled to a bistable quantum impurity interacting with a Gaussian bath modeled by a ohmic spin boson model. For white noise the complete dynamics in the four-dimensional Hilbert space is analyzed within a Lindblad formalism. For ohmic damping at finite temperatures we resort to a functional integral approach. We show how different dynamical regimes and crossover of the nonlinear spin boson system are probed by the qubit dynamics. (c) 2005 Elsevier B.V. All rights reserved. (literal)
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