314 citations · 2.3k across the 57 of their papers we have counts for
57 papers
Semiclassical Langevin dynamics of long-range dissipative time crystals
Reyhaneh Khasseh, Rosario Fazio, Angelo Russomanno
We develop a semiclassical Langevin approach to study finite-size effects in dissipative time-crystalline spin systems. For a spin- model with power-law Lindblad operators, we…
Long-lasting Topological Entanglement in a Monitored Rashba Nanowire
Emanuele Guida, Giulia Salatino, Gianluca Passarelli +2
We study the topological properties of a monitored Rashba chain along quantum-jump trajectories, investigating the persistence of the initial topological value of the disconnected…
Range-controlled entanglement in Lindbladian skin states of monitored fermions
Gianluca Passarelli, Angelo Russomanno, Davide Rossini +1
Reservoir engineering can stabilize states inaccessible to unitary dynamics. Directed particle-conserving dissipation creates Lindbladian skin states, where Pauli exclusion turns e…
Quantum many-body scars leading to time-translation symmetry breaking in kicked interacting spin models
Ángel L. Corps, Armando Relaño, Angelo Russomanno
We study an Ising model with long-range interactions undergoing a time-periodic kicking. For different initial states we observe persistent period doubling. When there is period do…
Logarithmically slow heat propagation in a clean Josephson-junction chain
Angelo Russomanno
We consider a clean Josephson-junction chain coupled by one of its extremities to a thermal bath through a resistance. Considering the Langevin dynamics in the classical regime, in…
Operator delocalization in disordered spin chains via exact MPO marginals
Jonnathan Pineda, Mario Collura, Gianluca Passarelli +3
We investigate operator delocalization in disordered one-dimensional spin chains by introducing -- besides the already known operator mass -- a complementary measure of operator co…
Classical and quantum chaotic synchronization in coupled dissipative time crystals
Eliška Postavová, Gianluca Passarelli, Procolo Lucignano +1
We investigate the dynamics of two coherently coupled dissipative time crystals. In the classical mean-field limit of infinite spin length, we identify a regime of chaotic synchron…
Nonstabilizerness of a Boundary Time Crystal
Gianluca Passarelli, Angelo Russomanno, Procolo Lucignano
Boundary time crystals exhibit measurement-induced phase transitions in their steady-state entanglement, with critical behavior that depends on the particular unraveling of the Lin…
Entanglement behavior and localization properties in monitored fermion systems
Giulia Piccitto, Giuliano Chiriacò, Davide Rossini +1
We study the asymptotic bipartite entanglement in various integrable and nonintegrable models of monitored fermions. We find that, for the integrable cases, the entanglement versus…
Nonstabilizerness in the unitary and monitored quantum dynamics of XXZ-staggered and SYK models
Angelo Russomanno, Gianluca Passarelli, Davide Rossini +1
We consider the quantum-state-diffusion dynamics of the XXZ-staggered spin chain, also focusing on its noninteracting XX-staggered limit, and of the Sachdev-Ye-Kitaev (SYK) model.…
Dynamics of edge modes in monitored Su-Schrieffer-Heeger Models
Giulia Salatino, Gianluca Passarelli, Angelo Russomanno +3
We investigate the effect of dissipation on the dynamics of edge modes in the monitored Su-Schrieffer-Heeger (SSH) model. Our study considers both a linear observable and a nonline…
Thermalization propagation front and robustness against avalanches in localized systems
Annarita Scocco, Gianluca Passarelli, Mario Collura +2
We investigate the robustness of the many-body localized (MBL) phase to the quantum-avalanche instability by studying the dynamics of a localized spin chain coupled to a …
Chaos and magic in the dissipative quantum kicked top
Gianluca Passarelli, Procolo Lucignano, Davide Rossini +1
We consider an infinite-range interacting quantum spin-1/2 model, undergoing periodic kicking and dissipatively coupled with an environment. In the thermodynamic limit, it is descr…
The impact of different unravelings in a monitored system of free fermions
Giulia Piccitto, Davide Rossini, Angelo Russomanno
We consider a free-fermion chain undergoing dephasing, described by two different random-measurement protocols (unravelings): a quantum-state-diffusion and a quantum-jump one. Both…
Swapping Floquet time crystal
Roberto Gargiulo, Gianluca Passarelli, Procolo Lucignano +1
We propose a Floquet period-doubling time-crystal model based on a disordered interacting long-range spin chain where the periodic swapping of nearby spin couples is applied. This…
Kitaev ring threaded by a magnetic flux: Topological gap, Anderson localization of quasiparticles, and divergence of supercurrent derivative
Martina Minutillo, Procolo Lucignano, Gabriele Campagnano +1
We study a superconducting Kitaev ring pierced by a magnetic flux, with and without disorder, in a quantum ring configuration, and in a rf-SQUID one, where a weak link is present.…
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…
Many-body Dynamics in Monitored Atomic Gases Without Post-Selection Barrier
Gianluca Passarelli, Xhek Turkeshi, Angelo Russomanno +3
We study the properties of a monitored ensemble of atoms driven by a laser field and in the presence of collective decay. The properties of the quantum trajectories describing the…
Spatiotemporally ordered patterns in a chain of coupled dissipative kicked rotors
Angelo Russomanno
In this work we consider the dynamics of a chain of many coupled kicked rotors with dissipation. We map a rich phase diagram with many dynamical regimes. We focus mainly on a regim…
Parent Hamiltonian Reconstruction via Inverse Quantum Annealing
Davide Rattacaso, Gianluca Passarelli, Angelo Russomanno +3
Finding a local Hamiltonian having a given many-body wavefunction as its ground state, i.e. a parent Hamiltonian, is a challenge of fundamental impo…
Entanglement dynamics with string measurement operators
Giulia Piccitto, Angelo Russomanno, Davide Rossini
We explain how to apply a Gaussian-preserving operator to a fermionic Gaussian state. We use this method to study the evolution of the entanglement entropy of an Ising spin chain f…
Dissipative time crystals with long-range Lindbladians
Gianluca Passarelli, Procolo Lucignano, Rosario Fazio +1
Dissipative time crystals can appear in spin systems, when the symmetry of the Hamiltonian is broken by the environment, and the square of total spin operator is conser…
Weak ergodicity breaking in Josephson-junction arrays
Angelo Russomanno, Michele Fava, Rosario Fazio
We study the quantum dynamics of Josephson junction arrays. We find isolated groups of low-entanglement eigenstates, that persist even when the Josephson interaction is strong enou…
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…