Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Nina Megier"'
Publikováno v:
Physical Review Research, Vol 4, Iss 4, p 043075 (2022)
A dynamical symmetry is employed to determine the structure of the quantum non-Markovian time-local master equation. Such a structure is composed from two components: scalar kinetic coefficients and the standard quantum Markovian operator form. The k
Externí odkaz:
https://doaj.org/article/6d091ebecc9c4e39a2b7564b5387d9f0
Publikováno v:
Entropy, Vol 24, Iss 2, p 304 (2022)
We critically examine the role that correlations established between a system and fragments of its environment play in characterising the ensuing dynamics. We employ a dephasing model with different initial conditions, where the state of the initial
Externí odkaz:
https://doaj.org/article/874593c631d84fef9df262375e3884af
Publikováno v:
Entropy, Vol 23, Iss 7, p 905 (2021)
Simple, controllable models play an important role in learning how to manipulate and control quantum resources. We focus here on quantum non-Markovianity and model the evolution of open quantum systems by quantum renewal processes. This class of quan
Externí odkaz:
https://doaj.org/article/c62f582b0ce045adaa875f0becea8ef7
On the connection between microscopic description and memory effects in open quantum system dynamics
Publikováno v:
Quantum, Vol 5, p 439 (2021)
The exchange of information between an open quantum system and its environment allows us to discriminate among different kinds of dynamics, in particular detecting memory effects to characterize non-Markovianity. Here, we investigate the role played
Externí odkaz:
https://doaj.org/article/ec320edd057b46a0bf4d5930d3917c4b
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
Abstract The theoretical description of quantum dynamics in an intriguing way does not necessarily imply the underlying dynamics is indeed intriguing. Here we show how a known very interesting master equation with an always negative decay rate [etern
Externí odkaz:
https://doaj.org/article/2c7cee5685594c3287a7c6de1f83d457
Publikováno v:
Physical Review Research, Vol 2, Iss 4, p 043376 (2020)
Quantum measurements and the associated state changes are properly described in the language of instruments. We investigate the properties of a time continuous family of instruments associated with the recently introduced class of general Gaussian no
Externí odkaz:
https://doaj.org/article/5cb3b7651cae4dfa819da683da720fc0
Publikováno v:
Entropy, Vol 22, Iss 7, p 796 (2020)
Using a newly introduced connection between the local and non-local description of open quantum system dynamics, we investigate the relationship between these two characterisations in the case of quantum semi-Markov processes. This class of quantum e
Externí odkaz:
https://doaj.org/article/90089de8de904caa91057a17ae092000
Publikováno v:
New Journal of Physics, Vol 22, Iss 8, p 083011 (2020)
Master equations are a useful tool to describe the evolution of open quantum systems. In order to characterize the mathematical features and the physical origin of the dynamics, it is often useful to consider different kinds of master equations for t
Externí odkaz:
https://doaj.org/article/f55a58d4acd540959a3903e54ba76ab9
Publikováno v:
Physical Review Research. 4
A dynamical symmetry is employed to determine the structure of the quantum non-Markovian time-local master equation. Such a structure is composed from two components: scalar kinetic coefficients and the standard quantum Markovian operator form. The k
The interpretation of non-Markovian effects as due to the information exchange between an open quantum system and its environment has been recently formulated in terms of properly regularized entropic quantities, as their revivals in time can be uppe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::37dd0292c494b2912f6cd0dc479fd577
http://arxiv.org/abs/2201.07812
http://arxiv.org/abs/2201.07812