33 citations · 72 across the 8 of their papers we have counts for
8 papers
Exact non-Markovian master equations: a generalized derivation for Gaussian systems
Antonio D'Abbruzzo, Vittorio Giovannetti, Vasco Cavina
We derive an exact master equation that captures the dynamics of a quadratic quantum system linearly coupled to a Gaussian environment of the same statistics: the Gaussian Master E…
Unifying quantum stochastic methods using Wick's theorem on the Keldysh contour
Vasco Cavina, Antonio D'Abbruzzo, Vittorio Giovannetti
We present a method, based on the Keldysh formalism, for deriving stochastic master equations that describe the non-Markovian dynamics of a quantum system coupled to a Gaussian env…
Steady-state entanglement scaling in open quantum systems: A comparison between several master equations
Antonio D'Abbruzzo, Davide Rossini, Vittorio Giovannetti +1
We investigate the scaling of the fermionic logarithmic negativity (FLN) between complementary intervals in the steady state of a driven-dissipative tight-binding critical chain, c…
Recovering complete positivity of non-Markovian quantum dynamics with Choi-proximity regularization
Antonio D'Abbruzzo, Donato Farina, Vittorio Giovannetti
A relevant problem in the theory of open quantum systems is the lack of complete positivity of dynamical maps obtained after weak-coupling approximations, a famous example being th…
A time-dependent regularization of the Redfield equation
Antonio D'Abbruzzo, Vasco Cavina, Vittorio Giovannetti
We introduce a new regularization of the Redfield equation based on a replacement of the Kossakowski matrix with its closest positive semidefinite neighbor. Unlike most of the exis…
Logarithmic entanglement scaling in dissipative free-fermion systems
Antonio D'Abbruzzo, Vincenzo Alba, Davide Rossini
We study the quantum information spreading in one-dimensional free-fermion systems in the presence of localized thermal baths. We employ a nonlocal Lindblad master equation to desc…
Topological signatures in a weakly dissipative Kitaev chain of finite length
Antonio D'Abbruzzo, Davide Rossini
We construct a global Lindblad master equation for a Kitaev quantum wire of finite length, weakly coupled to an arbitrary number of thermal baths, within the Born-Markov and secula…
Self-consistent microscopic derivation of Markovian master equations for open quadratic quantum systems
Antonio D'Abbruzzo, Davide Rossini
We provide a rigorous construction of Markovian master equations for a wide class of quantum systems that encompass quadratic models of finite size, linearly coupled to an environm…