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Dynamics of a qubit coupled to a dissipative nonlinear quantum oscillator: An effective-bath approach

URN to cite this document:
urn:nbn:de:bvb:355-epub-192511
Vierheilig, Carmen ; Bercioux, Dario ; Grifoni, Milena
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Date of publication of this fulltext: 26 May 2011 07:34


Abstract

We consider a qubit coupled to a nonlinear quantum oscillator, the latter coupled to an Ohmic bath, and investigate the qubit dynamics. This composed system can be mapped onto that of a qubit coupled to an effective bath. An approximate mapping procedure to determine the spectral density of the effective bath is given. Specifically, within a linear response approximation the effective spectral ...

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