Driving a many-body spin system periodically opens up control over the geometry of its quasienergy landscape that undriven models simply don’t have. This paper shows that singularities can be engineered into the density of quasienergy states by tuning an external control parameter, with …

This paper studies bosonic transport through one-dimensional spin systems, induced by coupling them to bosonic reservoirs held at different temperatures. Using the quantum-optical master equation in the weak-coupling limit, it calculates the energy transmitted from source to drain and shows that, at …

The kicked top — a periodically driven quantum spin system — shows precursors of critical behavior in its quasienergy spectrum that stem from dynamical instability rather than a conventional equilibrium phase transition. Using a semiclassical approach, this paper derives a logarithmic divergence in …

My PhD dissertation, completed at the Technische Universität Berlin in March 2013, on collective and critical effects in bosonic transport — quantum effects in heat transport at atomic scales. It looks at how higher cumulants of a transport process can reveal collectivity more sensitively than the …

This paper considers thermal transport between two reservoirs coupled by a quantum Ising chain, as a model for non-equilibrium physics induced in quantum-critical many-body systems. By deriving rate equations from exact expressions for the quasiparticle pairs generated during transport, it finds …

For the multi-mode Dicke model in a transport setting that shows collective boson transmissions, this paper constructs an equation of motion for the cumulant generating function directly, rather than starting from the full master equation. Approximating the resulting system at the level of the …