Dissipative dynamics of a biased qubit coupled to a harmonic oscillator: Analytical results beyond the rotating wave approximation

URN to cite this document:: urn:nbn:de:bvb:355-epub-90094
DOI to cite this document:: 10.5283/epub.9009

Hausinger, Johannes ; Grifoni, Milena

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Date of publication of this fulltext: 13 Aug 2009 09:23

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Abstract

We study the dissipative dynamics of a biased two-level system (TLS) coupled to a harmonic oscillator (HO), the latter interacting with an Ohmic environment. Using Van-Vleck perturbation theory and going to second order in the coupling between TLS and HO, we show how the Hamiltonian of the TLS-HO system can be diagonalized analytically. Our model represents an improvement to the usually used ...