3 papers
quant-ph2025
Purification of quantum trajectories in infinite dimensions
Federico Girotti, Alessandro Vitale
In this work we exhibit a class of examples that show that the characterization of purification of quantum trajectories in terms of 'dark' subspaces that was proved for finite dime…
quant-ph2025
Quasi-stationary normal states for quantum Markov semigroups
Ameur Dhahri, Franco Fagnola, Federico Girotti +1
We introduce the notion of Quasi-Stationary State (QSS) in the context of quantum Markov semigroups that generalizes the one of quasi-stationary distribution in the case of classic…
quant-ph2023
Optimal estimation of pure states with displaced-null measurements
Federico Girotti, Alfred Godley, Mădălin Guţă
We revisit the problem of estimating an unknown parameter of a pure quantum state, and investigate `null-measurement' strategies in which the experimenter aims to measure in a basi…