201 citations · 607 across the 16 of their papers we have counts for
9 papers · 1 filter
Quantum Fisher Information under decoherence with explicit wavefunctions
Francesco Musso, Vittorio Vitale, Sara Murciano
We present a method to estimate the quantum Fisher information (QFI) of many-body quantum states in the presence of decoherence, where its direct evaluation requires the full spect…
Network theory classification of quantum matter based on wave function snapshots
Riccardo Andreoni, Vittorio Vitale, Cristiano Muzzi +3
Quantum computers and simulators offer unparalleled capabilities of probing quantum many-body states, by obtaining snapshots of the many-body wave function via collective projectiv…
Thermalization and Criticality on an Analog-Digital Quantum Simulator
Trond I. Andersen, Nikita Astrakhantsev, Amir H. Karamlou +224
Understanding how interacting particles approach thermal equilibrium is a major challenge of quantum simulators. Unlocking the full potential of such systems toward this goal requi…
Robust estimation of the Quantum Fisher Information on a quantum processor
Vittorio Vitale, Aniket Rath, Petar Jurcevic +3
We present the experimental measurement, on a quantum processor, of a series of polynomial lower bounds that converge to the quantum Fisher information (QFI), a fundamental quantit…
Entanglement phase diagrams from partial transpose moments
Jose Carrasco, Matteo Votto, Vittorio Vitale +5
We present experimentally and numerically accessible quantities that can be used to differentiate among various families of random entangled states. To this end, we analyze the ent…
Entanglement barrier and its symmetry resolution: theory and experiment
Aniket Rath, Vittorio Vitale, Sara Murciano +6
The operator entanglement (OE) is a key quantifier of the complexity of a reduced density matrix. In out-of-equilibrium situations, e.g. after a quantum quench of a product state,…
Experimental violations of Leggett-Garg's inequalities on a quantum computer
Alessandro Santini, Vittorio Vitale
Leggett-Garg's inequalities predict sharp bounds for some classical correlation functions that address the quantum or classical nature of real-time evolutions. We experimentally ob…
Symmetry-resolved entanglement detection using partial transpose moments
Antoine Neven, Jose Carrasco, Vittorio Vitale +8
We propose an ordered set of experimentally accessible conditions for detecting entanglement in mixed states. The -th condition involves comparing moments of the partially trans…
Assessing the quantumness of the annealing dynamics via Leggett Gargs inequalities: a weak measurement approach
V. Vitale, G. De Filippis, A. De Candia +3
Adiabatic quantum computation (AQC) is a promising counterpart of universal quantum computation, based on the key concept of quantum annealing (QA). QA is claimed to be at the basi…