17 citations · 64 across the 6 of their papers we have counts for
5 papers · 1 filter
Stückelberg-Interferometry with ultra-cold atoms
Patrick Plötz, Sandro Wimberger
We show that and how ultra-cold atoms in an accelerated two-band lattice are a controlled realization of Landau--Zener--Stückelberg interferometry.
Effective spin model for interband transport in a Wannier-Stark lattice system
Patrick Plötz, Peter Schlagheck, Sandro Wimberger
We show that the interband dynamics in a tilted two-band Bose-Hubbard model can be reduced to an analytically accessible spin model in the case of resonant interband oscillations.…
On Rabi oscillations between Bloch bands
Patrick Plötz
We study Rabi oscillations between the bands of an arbitrary biased superlattice in a tight-binding model. We reduce the problem to an equation of Whittaker--Hill type and, in abse…
Collapse and revival in inter-band oscillations of a two-band Bose-Hubbard model
Patrick Plötz, Javier Madronero, Sandro Wimberger
We study the effect of a many-body interaction on inter-band oscillations in a two-band Bose-Hubbard model with external Stark force. Weak and strong inter-band oscillations are ob…
Detection of avoided crossings by fidelity
Patrick Plötz, Michael Lubasch, Sandro Wimberger
The fidelity, defined as overlap of eigenstates of two slightly different Hamiltonians, is proposed as an efficient detector of avoided c rossings in the energy spectrum. This new…