278 citations · 1.6k across the 52 of their papers we have counts for
5 papers · 1 filter
Non-Markovian random unitary qubit dynamics
Dariusz Chruściński, Filip A. Wudarski
We compare two approaches to non-Markovian quantum evolution: one based on the concept of divisible maps and the other one based on distinguishability of quantum states. The former…
Quantum-correlation breaking channels, quantum conditional probability and Perron-Frobenius theory
Dariusz Chruściński
Using the quantum analog of conditional probability and classical Bayes theorem we discuss some aspects of quantum-classical and classical-classical channels in connection to the r…
New tools for investigating positive maps in matrix algebras
Justyna Pytel Zwolak, Dariusz Chruściński
We provide a novel tool which may be used to construct new examples of positive maps in matrix algebras (or, equivalently, entanglement witnesses). It turns out that this can be us…
Markovianity criteria for quantum evolution
Dariusz Chruściński, Andrzej Kossakowski
We characterize a class of Markovian dynamics using the concept of divisible dynamical map. Moreover we provide a family of criteria which can distinguish Markovian and non-Markovi…
A class of exposed indecomposable positive maps
Gniewomir Sarbicki, Dariusz Chruściński
Exposed positive maps in matrix algebras define a dense subset of extremal maps. We provide a class of indecomposable positive maps in the algebra of 2n x 2n complex matrices with…