9 papers
Quantum Contact Processes on a Topological Lattice
Julius Bohm, Richard Schmidt, Michael Fleischhauer +1
Contact processes play an important role in classical non-equilibrium dynamics, describing the spreading of diseases, the dynamics of earthquakes and forest fires, and the distribu…
Dephasing in Rydberg Facilitation Due to State-Dependent Dipole Forces
Tom Schlegel, Evangelia Konstantinidou, Michael Fleischhauer +1
Rydberg atoms allow for the experimental study of open many-body systems and nonequilibrium phenomena. High dephasing rates are a generic feature of these systems, and therefore th…
VibrantLeaves: A principled parametric image generator for training deep restoration models
Raphael Achddou, Yann Gousseau, Saïd Ladjal +1
In this paper, we introduce a synthetic image generator relying on a few simple principles, specifically focusing on geometric modeling, textures, and a simple modeling of image ac…
Nonequilibrium Universality of Rydberg-Excitation Spreading on a Dynamic Network
Simon Ohler, Daniel Brady, Patrick Mischke +6
Understanding the universal properties of non-equilibrium phase transitions of spreading processes is a challenging problem. This applies in particular to irregular and dynamically…
Anomalous Directed Percolation on a Dynamic Network using Rydberg Facilitation
Daniel Brady, Simon Ohler, Johannes Otterbach +1
The facilitation of Rydberg excitations in a gas of atoms provides an ideal model system to study epidemic evolution on (dynamic) networks and self organization of complex systems…
Mean-field approach to Rydberg facilitation in a gas of atoms at high and low temperatures
Daniel Brady, Michael Fleischhauer
The excitation spread caused by Rydberg facilitation in a gas of laser driven atoms is an interesting model system for studying epidemic dynamics. We derive a mean-field approach t…
Griffiths Phase in a Facilitated Rydberg Gas at Low Temperature
Daniel Brady, Jana Bender, Patrick Mischke +3
The spread of excitations by Rydberg facilitation bears many similarities to epidemics. Such systems can be modeled with Monte-Carlo simulations of classical rate equations to grea…
Towards Learning Self-Organized Criticality of Rydberg Atoms using Graph Neural Networks
Simon Ohler, Daniel Brady, Winfried Lötzsch +2
Self-Organized Criticality (SOC) is a ubiquitous dynamical phenomenon believed to be responsible for the emergence of universal scale-invariant behavior in many, seemingly unrelate…
Hamiltonian active particles in an environment
Timo Eichmann, Diego Fieguth, Daniel Brady +1
We examine a Hamiltonian system which represents an active Brownian particle that can move against an external force by drawing energy from an internal depot while immersed in a no…