Decoherence dynamics of a qubit coupled
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S. Ashhab; J.R. Johansson; Franco Nori
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Article
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2006
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Elsevier Science
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English
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We study the decoherence dynamics of a qubit coupled to a quantum two-level system (TLS) in addition to its weak coupling to a background environment. We analyze the different regimes of behaviour that arise as the values of the different parameters are varied. We classify those regimes as two weak-