858 citations · 3.5k across the 77 of their papers we have counts for
3 papers · 1 filter
Quantum phase transition of Ising-coupled Kondo impurities
Markus Garst, Stefan Kehrein, Thomas Pruschke +2
We investigate a model of two Kondo impurities coupled via an Ising interaction. Exploiting the mapping to a generalized single-impurity Anderson model, we establish that the model…
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.…
Flow equation renormalization of a spin-boson model with a structured bath
Silvia Kleff, Stefan Kehrein, Jan von Delft
We discuss the dynamics of a spin coupled to a damped harmonic oscillator. This system can be mapped to a spin-boson model with a structured bath, i.e. the spectral function of the…