303 citations · 5.9k across the 109 of their papers we have counts for
34 papers · 1 filter
Quantum Algorithms for the computation of quantum thermal averages at work
Riccardo Aiudi, Claudio Bonanno, Claudio Bonati +6
Recently, a variety of quantum algorithms have been devised to estimate thermal averages on a genuine quantum processor. In this paper, we consider the practical implementation of…
Entanglement transitions and quantum bifurcations under continuous long-range monitoring
Angelo Russomanno, Giulia Piccitto, Davide Rossini
We study the asymptotic bipartite entanglement entropy of the quantum trajectories of a free-fermionic system, when subject to a continuous nonlocal monitoring. The measurements ar…
The Ising critical quantum Otto engine
Giulia Piccitto, Michele Campisi, Davide Rossini
We study a four-stroke Otto engine whose working fluid is a quantum Ising chain. The thermodynamic cycle consists in sweeps of the transverse magnetic field occurring in thermal is…
Entanglement transitions in the quantum Ising chain: A comparison between different unravelings of the same Lindbladian
Giulia Piccitto, Angelo Russomanno, Davide Rossini
We study the dynamics of entanglement in the quantum Ising chain with dephasing dissipation in a Lindblad master equation form. We consider two unravelings which preserve the Gauss…
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…
Discrete time crystal in a finite chain of Rydberg atoms without disorder
Chuhui Fan, D. Rossini, Han-Xiao Zhang +3
We study the collective dynamics of a clean Floquet system of cold atoms, numerically simulating two realistic set-ups based on a regular chain of interacting Rydberg atoms driven…
Persistent currents by reservoir engineering
Maximilian Keck, Davide Rossini, Rosario Fazio
We demonstrate that persistent currents can be induced in a quantum system in contact with a structured reservoir, without the need of any applied gauge field. The working principl…
On the optimal working point in dissipative quantum annealing
Luca Arceci, Simone Barbarino, Davide Rossini +1
We study the effect of a thermal environment on the quantum annealing dynamics of a transverse-field Ising chain. The environment is modelled as a single Ohmic bath of quantum harm…
Quantum correlations and limit cycles in the driven-dissipative Heisenberg lattice
E. T. Owen, J. Jin, D. Rossini +2
Driven-dissipative quantum many-body systems have attracted increasing interest in recent years as they lead to novel classes of quantum many-body phenomena. In particular, mean-fi…
Dissipation in adiabatic quantum computers: Lessons from an exactly solvable model
Maximilian Keck, Simone Montangero, Giuseppe E. Santoro +2
We introduce and study the adiabatic dynamics of free-fermion models subject to a local Lindblad bath and in the presence of a time-dependent Hamiltonian. The merit of these models…
Stabilizing strongly correlated photon fluids with non-Markovian reservoirs
José Lebreuilly, Alberto Biella, Florent Storme +4
We introduce a novel frequency-dependent incoherent pump scheme with a square-shaped spectrum as a way to study strongly correlated photons in arrays of coupled nonlinear resonator…
Signatures of many-body localisation in the dynamics of two-sites entanglement
Fernando Iemini, Angelo Russomanno, Davide Rossini +2
We are able to detect clear signatures of dephasing -- a distinct trait of Many-Body Localisation (MBL) -- via the dynamics of two-sites entanglement, quantified through the concur…
Local quantum thermal susceptibility
Antonella De Pasquale, Davide Rossini, Rosario Fazio +1
Thermodynamics relies on the possibility to describe systems composed of a large number of constituents in terms of few macroscopic variables. Its foundations are rooted into the p…
Phase diagram of a QED-cavity array coupled via a N-type level scheme
Jiasen Jin, Rosario Fazio, Davide Rossini
We study the zero-temperature phase diagram of a one-dimensional array of QED cavities where, besides the single-photon hopping, an additional coupling between neighboring cavities…
Steady-state phase diagram of a driven QED-cavity array with cross-Kerr nonlinearities
Jiasen Jin, Davide Rossini, Martin Leib +2
We study the properties of an array of QED-cavities coupled by nonlinear elements in the presence of photon leakage and driven by a coherent source. The main effect of the nonlinea…
Quantum parameter estimation affected by unitary disturbance
A. De Pasquale, D. Rossini, P. Facchi +1
We provide a general framework for handling the effects of a unitary disturbance on the estimation of the amplitude associated to a unitary dynamics. By computing an analytical…
Photon transfer in ultrastrongly coupled three-cavity arrays
S. Felicetti, G. Romero, D. Rossini +2
We study the photon transfer along a linear array of three coupled cavities where the central one contains an interacting two-level system in the strong and ultrastrong coupling re…
Photon solid phases in driven arrays of nonlinearly coupled cavities
Jiasen Jin, Davide Rossini, Rosario Fazio +2
We introduce and study the properties of an array of QED cavities coupled by nonlinear elements, in the presence of photon leakage and driven by a coherent source. The nonlinear co…
Matrix Product State representation for Slater Determinants and Configuration Interaction States
Pietro Silvi, Davide Rossini, Rosario Fazio +2
Slater determinants are product states of filled quantum fermionic orbitals. When they are expressed in a configuration space basis chosen a priori, their entanglement is bound and…
Optimal correlations in many-body quantum systems
Luigi Amico, Davide Rossini, Alioscia Hamma +1
Information and correlations in a quantum system are closely related through the process of measurement. We explore such relation in a many-body quantum setting, effectively bridgi…
Stiffness in 1D Matrix Product States with periodic boundary conditions
Davide Rossini, Vittorio Giovannetti, Rosario Fazio
We discuss in details a modified variational matrix-product-state algorithm for periodic boundary conditions, based on a recent work by P. Pippan, S.R. White and H.G. Everts, Phys.…
Ground state factorization and correlations with broken symmetry
Bruno Tomasello, Davide Rossini, Alioscia Hamma +1
We show how the phenomenon of factorization in a quantum many body system is of collective nature. To this aim we study the quantum discord in the one dimensional XY model in a…
Thermalization and ergodicity in many-body open quantum systems
Marko Znidaric, Tomaz Prosen, Giuliano Benenti +2
We study thermalization in many-body quantum systems locally coupled to an external bath. It is shown that quantum chaotic systems do thermalize, that is, they exhibit relaxation t…
Spin chain model for correlated quantum channels
Davide Rossini, Vittorio Giovannetti, Simone Montangero
We analyze the quality of the quantum information transmission along a correlated quantum channel by studying the average fidelity between input and output states and the average o…