Zobrazeno 1 - 10
of 8 966
pro vyhledávání: '"Walter, T. A."'
Autor:
Beyer, Konstantin, Strunz, Walter T.
The classical Jarzynski equality establishes an exact relation between the stochastic work performed on a system driven out of thermal equilibrium and the free energy difference in a corresponding quasi-static process. This fluctuation theorem bears
Externí odkaz:
http://arxiv.org/abs/2408.13417
We provide a new perspective on quantum dynamical phase transitions (DPTs) by explaining their origin in terms of caustics that form in the Fock space representation of the many-body state over time, using the fully connected transverse field Ising m
Externí odkaz:
http://arxiv.org/abs/2407.10529
Gradient descent algorithms on Riemannian manifolds have been used recently for the optimization of quantum channels. In this contribution, we investigate the influence of various regularization terms added to the cost function of these gradient desc
Externí odkaz:
http://arxiv.org/abs/2404.19659
We present a fully quantum dynamical treatment of a quantum heat engine and its baths based on the Hierarchy of Pure States (HOPS), an exact and general method for open quantum system dynamics. We show how the change of the bath energy and the intera
Externí odkaz:
http://arxiv.org/abs/2402.06039
Publikováno v:
ANNALEN DER PHYSIK 2023, 2300304
In classical stochastic theory, the joint probability distributions of a stochastic process obey by definition the Kolmogorov consistency conditions. Interpreting such a process as a sequence of physical measurements with probabilistic outcomes, thes
Externí odkaz:
http://arxiv.org/abs/2312.06545
Non-Markovian processes may arise in physics due to memory effects of environmental degrees of freedom. For quantum non-Markovianity, it is an ongoing debate to clarify whether such memory effects have a verifiable quantum origin, or whether they mig
Externí odkaz:
http://arxiv.org/abs/2310.01205
Approaching the long-time dynamics of non-Markovian open quantum systems presents a challenging task if the bath is strongly coupled. Recent proposals address this problem through a representation of the so-called process tensor in terms of a tensor
Externí odkaz:
http://arxiv.org/abs/2307.01802
Publikováno v:
Journal of Chemical Physics; 11/14/2024, Vol. 161 Issue 18, p1-9, 9p
We introduce an exact open system method to describe the dynamics of quantum systems that are strongly coupled to specific types of environments comprising of spins, such as central spin systems. Our theory is similar to the established non-Markovian
Externí odkaz:
http://arxiv.org/abs/2203.02417
Autor:
Link, Valentin, Müller, Kai, Lena, Rosaria G., Luoma, Kimmo, Damanet, François, Strunz, Walter T., Daley, Andrew J.
An important challenge in non-Markovian open quantum systems is to understand what information we gain from continuous measurement of an output field. For example, atoms in multimode cavity QED systems provide an exciting platform to study many-body
Externí odkaz:
http://arxiv.org/abs/2112.09499