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Selective decoupling in multi-level quantum systems by the SU(2) sign anomaly Open

Giorgio Anfuso, G. Piccitto, Vittorio Romano, Elisabetta Paladino, G. Falci · 2025

We investigate dynamical decoupling operated by $2π$-pulses in a two-level subspaces of a multilevel system showing that it may leads to selective decoupling. This provides a flexible strategy for decoupling transitions in a quantum networ…

Entanglement behavior and localization properties in monitored fermion systems Open

G. Piccitto, Giuliano Chiriacò, Davide Rossini, Angelo Russomanno · 2025

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 the system size is well fitted, over more than one order o…

Open-loop quantum control of small-size networks for high-order cumulants and cross-correlations sensing Open

A. D’Arrigo, G. Piccitto, G. Falci, Elisabetta Paladino · 2024

Many-body quantum heat engines based on free fermion systems Open

Vincenzo Roberto Arezzo, Davide Rossini, G. Piccitto · 2024

We study the performances of an imperfect quantum many-body Otto engine based\non free-fermion systems. Starting from the thermodynamic definitions of heat\nand work along ideal isothermal, adiabatic, and isochoric transformations, we\ngen…

The impact of different unravelings in a monitored system of free fermions Open

G. Piccitto, Davide Rossini, Angelo Russomanno · 2024

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 protocols keep the state in a Slater-determinant form, all…

Open-loop quantum control of small-size networks for high-order cumulants and cross-correlations sensing Open

A. D’Arrigo, G. Piccitto, G. Falci, Elisabetta Paladino · 2024

Quantum control techniques represent one of the most efficient tools to attain high-fidelity quantum operations and a convenient approach for quantum sensing and quantum noise spectroscopy. In this work, we investigate dynamical decoupling…

Entanglement dynamics with string measurement operators Open

G. Piccitto, Angelo Russomanno, Davide Rossini · 2023

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 undergoing a quantum-jump dynamics with string measurement o…

Report on 2303.07102v2 Open

G. Piccitto, Angelo Russomanno, Davide Rossini · 2023

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 undergoing a quantum-jump dynamics with string measurement op…

Entanglement transitions and quantum bifurcations under continuous long-range monitoring Open

Angelo Russomanno, G. Piccitto, Davide Rossini · 2023

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 are described by Gaussian-preserving two-point operators, who…

Report on 2303.07102v2 Open

G. Piccitto, Angelo Russomanno, Davide Rossini · 2023

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 undergoing a quantum-jump dynamics with string measurement op…

Report on scipost_202303_00025v1 Open

G. Piccitto, Angelo Russomanno, Davide Rossini · 2023

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 following a Lindblad dynamics with string measurement operato…

Report on scipost_202303_00025v1 Open

G. Piccitto, Angelo Russomanno, Davide Rossini · 2023

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 following a Lindblad dynamics with string measurement operato…

Entanglement dynamics with string measurement operators Open

G. Piccitto, Angelo Russomanno, Davide Rossini · 2023

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 following a Lindblad dynamics with string measurement operat…

Erratum: Entanglement transitions in the quantum Ising chain: A comparison between different unravelings of the same Lindbladian [Phys. Rev. B <b>105</b>, 064305 (2022)] Open

G. Piccitto, Angelo Russomanno, Davide Rossini · 2022

Received 7 December 2022DOI:https://doi.org/10.1103/PhysRevB.106.219901©2022 American Physical SocietyPhysics Subject Headings (PhySH)Research AreasDynamical phase transitionsQuantum entanglementQuantum measurementsQuantum stochastic proce…

The Ising critical quantum Otto engine Open

G. Piccitto, Michele Campisi, Davide Rossini · 2022

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 isolation, alternated by thermalisation strokes with reservoi…

The Ising critical quantum Otto engine Open

G. Piccitto, Michele Campisi, Davide Rossini · 2022

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 isolation, alternated by thermalisation strokes with reservoi…

Entanglement transitions in the quantum Ising chain: A comparison between different unravelings of the same Lindbladian Open

G. Piccitto, Angelo Russomanno, Davide Rossini · 2022

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 Gaussian form of the state, allowing to address large system siz…

Entanglement transitions in the quantum Ising chain: A comparison between different unravelings of the same Lindbladian Open

G. Piccitto, Angelo Russomanno, Davide Rossini · 2021

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 Gaussian form of the state, allowing to address large system siz…

Symmetries and conserved quantities of boundary time crystals in generalized spin models Open

G. Piccitto, Matteo M. Wauters, Franco Nori, Nathan Shammah · 2021

We investigate how symmetries and conserved quantities relate to the\noccurrence of the boundary time crystal (BTC) phase in a generalized spin model\nwith Lindblad dissipation. BTCs are a non-equilibrium phase of matter in which\nthe syst…

Dynamical phase diagram of a quantum Ising chain with long-range interactions Open

G. Piccitto, Bojan Žunkovič, Alessandro Silva · 2019

We investigate the effect of short-range correlations on the dynamical phase\ndiagram of quantum many-body systems with long-range interactions. Focusing on\nIsing spin chains with power-law decaying interactions and accounting for\nshort-…

Dynamical phase transition in the transverse field Ising chain characterized by the transverse magnetization spectral function Open

G. Piccitto, Alessandro Silva · 2019

We study a 1D-Quantum Ising Model in transverse field driven out of equilibrium by performing a composite quantum quench to deduce the asymptotic properties of the transverse magnetization stationary state via the analysis of the spectral …

Crossover from fast to slow dynamics in quantum Ising chains with long range interactions Open

G. Piccitto, Alessandro Silva · 2019

Quantum many body systems with long range interactions are known to display many fascinating phenomena experimentally observable in trapped ions, Rydberg atoms and polar molecules. Among these are dynamical phase transitions which occur af…

Quantum plasmonic waveguides: Au nanowires Open

Concetto Eugenio Andrea Cordaro, G. Piccitto, F. Priolo · 2015

Combining miniaturization and good operating speed is a compelling yet crucial task for our society. Plasmonic waveguides enable the possibility of carrying information at optical operating speed while maintaining the dimension of the devi…

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