31 citations · 90 across the 6 of their papers we have counts for
6 papers
Phonon spectral density in a GaAs/AlGaAs double quantum dot
Andrea Hofmann, Christian Karlewski, Andreas Heimes +6
We study phonon emission in a GaAs/AlGaAs double quantum dot by monitoring the tunneling of a single electron between the two dots. We prepare the system such that a known amount o…
Electron-assisted magnetization tunneling in single spin systems
Timofey Balashov, Christian Karlewski, Tobias Märkl +2
Magnetic excitations of single atoms on surfaces have been widely studied experimentally in the past decade. Lately, systems with unprecedented magnetic stability started to emerge…
Non-Markovian correlation functions for open quantum systems
Jinshuang Jin, Christian Karlewski, Michael Marthaler
Beyond the conventional quantum regression theorem, a general formula for non-Markovian correlation functions of arbitrary system operators both in the time- and frequency-domain i…
Lasing and transport in a multi-level double quantum dot system coupled to a microwave oscillator
Christian Karlewski, Andreas Heimes, Gerd Schön
We study a system of two quantum dots, each with several discrete levels, which are coherently coupled to a microwave oscillator. They are attached to electronic leads and coupled…
Magnetic adatoms as memory bits: A quantum master equation analysis
Christian Karlewski, Michael Marthaler, Tobias Märkl +3
Due to underlying symmetries the ground states of magnetic adatoms may be highly stable, which opens perspectives for application as single-atom memory. A specific example is a sin…
Time local master equation connecting the Born and Markov approximations
Christian Karlewski, Michael Marthaler
We present an exact expansion of the master equation for an open quantum system. The resulting equation is time local and enables us to calculate clearly defined higher order corre…