107 citations · 545 across the 19 of their papers we have counts for
11 papers · 1 filter
Work exchange between quantum systems: the spin-oscillator model
Heiko Schröder, Günter Mahler
With the development of quantum thermodynamics it has been shown that relaxation to thermal equilibrium and with it the concept of heat flux may emerge directly from quantum mechan…
The Clausius inequality beyond the weak coupling limit: The quantum Brownian oscillator revisited
ILki Kim, Guenter Mahler
We consider a quantum linear oscillator coupled at an arbitrary strength to a bath at an arbitrary temperature. We find an exact closed expression for the oscillator density operat…
Transport in anisotropic model systems analyzed by a correlated projection superoperator technique
Hendrik Weimer, Mathias Michel, Jochen Gemmer +1
By using a correlated projection operator, the time-convolutionless (TCL) method to derive a quantum master equation can be utilized to investigate the transport behavior of quantu…
Cavity-induced temperature control of a two-level system
Hendrik Weimer, Günter Mahler
We consider a two-level atom interacting with a single mode of the electromagnetic field in a cavity within the Jaynes-Cummings model. Initially, the atom is thermal while the cavi…
Non Thermal Equilibrium States of Closed Bipartite Systems
Harry Schmidt, Guenter Mahler
We investigate a two-level system in resonant contact with a larger environment. The environment typically is in a canonical state with a given temperature initially. Depending on…
Control of Local Relaxation Behavior in Closed Bipartite Quantum Systems
Harry Schmidt, Guenter Mahler
We investigate the decoherence of a spin 1/2 subsystem weakly coupled to an environment of many spins 1/2 with and without mutual coupling. The total system is closed, its state is…
Local Versus Global Thermal States: Correlations and the Existence of Local Temperatures
M. Hartmann, G. Mahler, O. Hess
We consider a quantum system consisting of a regular chain of elementary subsystems with nearest neighbor interactions and assume that the total system is in a canonical state with…
Existence of temperature on the nanoscale
Michael Hartmann, Guenter Mahler, Ortwin Hess
We consider a regular chain of quantum particles with nearest neighbour interactions in a canonical state with temperature . We analyse the conditions under which the state fact…
Failure of Effective Potential Approach: Nucleus-Electron Entanglement in the He-Ion
J. Gemmer, G. Mahler
Entanglement may be considered a resource for quantum-information processing, as the origin of robust and universal equilibrium behaviour, but also as a limit to the validity of an…
Delayed-choice measurement and temporal nonlocality
Ilki Kim, Guenter Mahler
We study for a composite quantum system with a quantum Turing architecture the temporal non-locality of quantum mechanics by using the temporal Bell inequality, which will be deriv…
Correlation between Correlations: Process and Time in Quantum Networks
Guenter Mahler, Ilki Kim
We study a special inhomogeneous quantum network consisting of a ring of pseudo-spins (here ) sequentially coupled to one and the same central spin under the influence o…