Quantum dynamical maps provide suitable mathematical representation of quantum
evolutions. When representing quantum states by density operators, the evident …

We provide a detailed discussion about the unitary and reduced evolution induced by family
of Hamiltonian models describing a multilevel system, with a ground state and a possibly …

The quantum regression formula for an open quantum system consists in an infinite
hierarchy of conditions for its multitime correlation functions, thus requiring full access to the …

In this work we consider the master equations for composite open quantum systems. We
provide purely algebraic formulae for terms of perturbation series defining such equations …

We investigate what can be concluded about a quantum system when sequential quantum
measurements of its observable–a prominent example of the so-called quantum stochastic …

We consider a well-known, exactly solvable model of an open quantum system with pure
decoherence. The aim of this paper is twofold. Firstly, decoherence is a property of open …

In the theory of open quantum systems, the Markovian approximation is very widespread.
Usually, it assumes the Gorini–Kossakowski–Sudarshan–Lindblad (GKSL) equation for …

Generalized spin-boson (GSB) models describe the interaction between a quantum
mechanical system and a structured boson environment, mediated by a family of coupling …

Dynamical decoupling is a technique aimed at suppressing the interaction between a
quantum system and its environment by applying frequent unitary operations on the system …

We study joint measurability of quantum observables in open systems governed by a master
equation of Lindblad form. We briefly review the historical perspective of open systems and …