90 citations · 270 across the 14 of their papers we have counts for
14 papers
Classical pair of states as optimal pair for quantum distinguishability quantifiers
Bassano Vacchini, Andrea Smirne, Nina Megier
The capability to quantitatively distinguish quantum states is of great importance for a variety of tasks, and has recently played an important role in the study of quantum reduced…
On the use of total state decompositions for the study of reduced dynamics
Andrea Smirne, Nina Megier, Bassano Vacchini
The description of the dynamics of an open quantum system in the presence of initial correlations with the environment needs different mathematical tools than the standard approach…
Correlations, information backflow, and objectivity in a class of pure dephasing models
Nina Megier, Andrea Smirne, Steve Campbell +1
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 class of dep…
Holevo skew divergence for the characterization of information backflow
Andrea Smirne, Nina Megier, Bassano Vacchini
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…
Adapted projection operator technique for the treatment of initial correlations
Andrea Trevisan, Andrea Smirne, Nina Megier +1
The standard theoretical descriptions of the dynamics of open quantum systems rely on the assumption that the correlations with the environment can be neglected at some reference (…
Memory effects in quantum dynamics modelled by quantum renewal processes
Nina Megier, Manuel Ponzi, Andrea Smirne +1
Simple, controllable models play an important role to learn how to manipulate and control quantum resources. We focus here on quantum non-Markovianity and model the evolution of op…
Non-Markovian dynamics under time-translation symmetry
Roie Dann, Nina Megier, Ronnie Kosloff
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 kineti…
Entropic bounds on information backflow
Nina Megier, Andrea Smirne, Bassano Vacchini
In the dynamics of open quantum systems, the backflow of information to the reduced system under study has been suggested as the actual physical mechanism inducing memory and thus…
On the connection between microscopic description and memory effects in open quantum system dynamics
Andrea Smirne, Nina Megier, Bassano Vacchini
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 t…
Evolution equations for quantum semi-Markov dynamics
Nina Megier, Andrea Smirne, Bassano Vacchini
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…
The interplay between local and non-local master equations: exact and approximated dynamics
Nina Megier, Andrea Smirne, Bassano Vacchini
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…
Continuous quantum measurement for general Gaussian unravelings can exist
Nina Megier, Walter T. Strunz, Kimmo Luoma
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 instrument…
Parametrization and optimization of Gaussian non-Markovian unravelings for open quantum dynamics
Nina Megier, Walter T. Strunz, Carlos Viviescas +1
We derive a family of Gaussian non-Markovian stochastic Schrödinger equations for the dynamics of open quantum systems. The different unravelings correspond to different choices of…
Eternal non-Markovianity: from random unitary to Markov chain realisations
Nina Megier, Dariusz Chruściński, Jyrki Piilo +1
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 interest…