Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Rose, Dominic C."'
Topological order offers possibilities for processing quantum information which can be immune to imperfections. However, the question of its stability out of equilibrium is relevant for experiments, where coupling to an environment is unavoidable. In
Externí odkaz:
http://arxiv.org/abs/2310.09406
Existence of Anderson localization is considered a manifestation of coherence of classical and quantum waves in disordered systems. Signatures of localization have been observed in condensed matter and cold atomic systems where the coupling to the en
Externí odkaz:
http://arxiv.org/abs/2303.07070
We present a framework to integrate tensor network (TN) methods with reinforcement learning (RL) for solving dynamical optimisation tasks. We consider the RL actor-critic method, a model-free approach for solving RL problems, and introduce TNs as the
Externí odkaz:
http://arxiv.org/abs/2209.14089
In machine learning, there is renewed interest in neural network ensembles (NNEs), whereby predictions are obtained as an aggregate from a diverse set of smaller models, rather than from a single larger model. Here, we show how to define and train a
Externí odkaz:
http://arxiv.org/abs/2209.11116
We consider the effects of strong dissipation in quantum systems with a notion of locality, which induces a hierarchy of many-body relaxation timescales as shown in [Phys. Rev. Lett. 124, 100604 (2020)]. If the strength of the dissipation varies stro
Externí odkaz:
http://arxiv.org/abs/2110.13158
Publikováno v:
J. Chem. Phys. 155, 134105 (2021)
We present a method to probe rare molecular dynamics trajectories directly using reinforcement learning. We consider trajectories that are conditioned to transition between regions of configuration space in finite time, like those relevant in the stu
Externí odkaz:
http://arxiv.org/abs/2105.04321
We study in detail an open quantum generalisation of a classical kinetically constrained model -- the East model -- known to exhibit slow glassy dynamics stemming from a complex hierarchy of metastable states with distinct lifetimes. Using the recent
Externí odkaz:
http://arxiv.org/abs/2010.15304
Publikováno v:
Phys. Rev. A 103, 042204 (2021)
We consider Markovian dynamics of a finitely dimensional open quantum system featuring a weak unitary symmetry, i.e., when the action of a unitary symmetry on the space of density matrices commutes with the master operator governing the dynamics. We
Externí odkaz:
http://arxiv.org/abs/2010.08492
Publikováno v:
Phys. Rev. Research 3, 033047 (2021)
We present a general theory of classical metastability in open quantum systems. Metastability is a consequence of a large separation in timescales in the dynamics, leading to the existence of a regime when states of the system appear stationary, befo
Externí odkaz:
http://arxiv.org/abs/2006.01227
Publikováno v:
New J. Phys. (2020)
Very often when studying non-equilibrium systems one is interested in analysing dynamical behaviour that occurs with very low probability, so called rare events. In practice, since rare events are by definition atypical, they are often difficult to a
Externí odkaz:
http://arxiv.org/abs/2005.12890