28 citations · 47 across the 10 of their papers we have counts for
7 papers · 1 filter
Tensor network methods for non-perturbative dynamics of open quantum systems
Thibaut Lacroix, Adam Burgess, Nicola Lorenzoni +11
The description of open quantum system dynamics beyond the perturbative treatment (usually associated with Markovian master equations) is a computationally challenging task due to…
Permutation-symmetric quantum trajectories
Elliot W. Lloyd, Aleksandra A. Ziolkowska, Jonathan Keeling
We show how one may perform a stochastic unravelling which respects weak permutation symmetry for general models of emitters coupled to a common system (e.g. a cavity mode). Ou…
Efficient construction of time-invariant process tensors for simulating high-dimensional non-Markovian open quantum systems
Émile Cochin, Jonathan Keeling, Brendon W. Lovett +1
Numerical methods for obtaining exact dynamics of non-Markovian open quantum systems are mostly limited to either small systems or to short-time evolution only. Here, we propose a…
Theory of dynamical superradiance in organic materials
Lukas Freter, Piper Fowler-Wright, Javier Cuerda +3
We develop the theory of dynamical superradiance -- the collective exchange of energy between an ensemble of initially excited emitters and a single-mode cavity -- for organic mate…
OQuPy: A Python package to efficiently simulate non-Markovian open quantum systems with process tensors
Gerald E. Fux, Piper Fowler-Wright, Joel Beckles +11
Non-Markovian dynamics arising from the strong coupling of a system to a structured environment is essential in many applications of quantum mechanics and emerging technologies. De…
Tree-like process tensor contraction for automated compression of environments
Moritz Cygorek, Brendon W. Lovett, Jonathan Keeling +1
The algorithm "automated compression of environments" (ACE) [Nat. Phys. 18, 662 (2022)] provides a versatile way of simulating an extremely broad class of open quantum systems. Thi…
Process tensor approaches to modeling two-dimensional spectroscopy
Roosmarijn de Wit, Jonathan Keeling, Brendon W. Lovett +1
Problems in the field of open quantum systems often involve an environment that strongly influences the dynamics of excited states. Here we present a numerical method to model opti…