4 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…
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…
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…