2 papers
cond-mat.stat-mech2003
The spin-boson model with a structured environment: A comparison of approaches
F. K. Wilhelm, S. Kleff, J. von Delft
In the spin-boson model, the properties of the oscillator bath are fully characterized by the spectral density of oscillators . We study the case when this function is of Bre…
cond-mat.mes-hall2003
Exploiting environmental resonances to enhance qubit quality factors
S. Kleff, S. Kehrein, J. von Delft
We discuss dephasing times for a two-level system (including bias) coupled to a damped harmonic oscillator. This system is realized in measurements on solid-state Josephson qubits.…