199 citations · 1k across the 36 of their papers we have counts for
15 papers · 1 filter
Page Curve for Local-Operator Entanglement from Free Probability
Neil Dowling, Silvia Pappalardi
The local-operator entanglement (LOE) measures the classical simulability of a Heisenberg operator and is conjectured to witness many-body chaos in locally interacting systems. Usi…
Quantum Mpemba effect in chaotic systems with conservation laws
Thomas Martin Müller, Silvia Pappalardi, Rosario Fazio
Closed chaotic quantum systems relax after a quench into a Gibbs ensemble. At late times, the relaxation speed is determined by their conservation laws and hydrodynamics. As a resu…
Assembling Extensive Quantum Fisher Information in Stabilizer Systems
Arnau Lira-Solanilla, Sreemayee Aditya, Xhek Turkeshi +1
We introduce a systematic framework to construct nonlocal observables with extensive quantum Fisher information (QFI) density in stabilizer codes. The construction maps stabilizer…
Free Independence and Unitary Design from Random Matrix Product Unitaries
Neil Dowling, Jacopo De Nardis, Markus Heinrich +2
Unitary randomness underpins both fundamental tasks in quantum information and the modern theory of quantum chaos. On one side, a central concept is that of approximate unitary des…
Statistics of the Random Matrix Spectral Form Factor
Alex Altland, Francisco Divi, Tobias Micklitz +2
The spectral form factor of random matrix theory plays a key role in the description of disordered and chaotic quantum systems. While its moments are known to be approximately Gaus…
Multipartite entanglement structure of monitored quantum circuits
Arnau Lira-Solanilla, Xhek Turkeshi, Silvia Pappalardi
Monitored quantum circuits have attracted significant interest as an example of synthetic quantum matter, intrinsically defined by their quantum information content. Here, we propo…
Towards scalable active steering protocols for genuinely entangled state manifolds
Samuel Morales, Silvia Pappalardi, Reinhold Egger
We introduce and analyze an active steering protocol designed to target multipartite entangled states. The protocol involves multiple qubits subjected to weak Bell pair measurement…
Thermalization and hydrodynamic long-time tails in a Floquet system
Anne Matthies, Nicolas Dannenfeld, Silvia Pappalardi +1
We systematically investigate whether classical hydrodynamic field theories can predict the long-time dynamics of many-particle quantum systems. We study both numerically and analy…
Designs via Free Probability
Michele Fava, Jorge Kurchan, Silvia Pappalardi
Unitary Designs have become a vital tool for investigating pseudorandomness since they approximate the statistics of the uniform Haar ensemble. Despite their central role in quantu…
Quantum Many-Body Scars in Dual-Unitary Circuits
Leonard Logarić, Shane Dooley, Silvia Pappalardi +1
Dual-unitary circuits are a class of quantum systems for which exact calculations of various quantities are possible, even for circuits that are nonintegrable. The array of known e…
Entanglement enhanced metrology with quantum many-body scars
Shane Dooley, Silvia Pappalardi, John Goold
Although entanglement is a key resource for quantum-enhanced metrology, not all entanglement is useful. For example in the process of many-body thermalisation, bipartite entangleme…
Extensive multipartite entanglement from su(2) quantum many-body scars
Jean-Yves Desaules, Francesca Pietracaprina, Zlatko Papić +2
Recent experimental observation of weak ergodicity breaking in Rydberg atom quantum simulators has sparked interest in quantum many-body scars - eigenstates which evade thermalisat…
Bridging entanglement dynamics and chaos in semiclassical systems
Alessio Lerose, Silvia Pappalardi
It is widely recognized that entanglement generation and dynamical chaos are intimately related in semiclassical models via the process of decoherence. In this work, we propose a u…
Scrambling and entanglement spreading in long-range spin chains
Silvia Pappalardi, Angelo Russomanno, Bojan Žunkovič +3
We study scrambling in connection to multipartite entanglement dynamics in regular and chaotic long-range spin chains, characterized by a well defined semi-classical limit. For reg…
Multipartite entanglement after a quantum quench
Silvia Pappalardi, Angelo Russomanno, Alessandro Silva +1
We study the multipartite entanglement of a quantum many-body system undergoing a quantum quench. We quantify multipartite entanglement through the quantum Fisher information (QFI)…