518 citations · 1.7k across the 81 of their papers we have counts for
9 papers · 1 filter
Charging a quantum spin network towards Heisenberg-limited precision
Beatrice Donelli, Stefano Gherardini, Raffaele Marino +2
We present a cooperative protocol to charge quantum spin networks up to the highest-energy configuration, in terms of the network's magnetization. The charging protocol leverages s…
Quantum Non-Demolition Measurements and Leggett-Garg inequality
Paolo Solinas, Stefano Gherardini
Quantum non-demolition measurements define a non-invasive protocol to extract information from a quantum system that we aim to monitor. They exploit an additional quantum system th…
Quasiprobability distributions with weak measurements
Gabriele Bizzarri, Stefano Gherardini, Mylenne Manrique +3
We discuss and experimentally demonstrate the role of quantum coherence in a sequence of two measurements collected at different times using weak measurements. For this purpose, we…
Coherence-enhanced single-qubit thermometry out of equilibrium
Gonçalo Frazao, Marco Pezzutto, Yasser Omar +2
The metrological limits of thermometry operated in nonequilibrium dynamical regimes are analyzed. We consider a finite-dimensional quantum system, employed as a quantum thermometer…
Interferometry of quantum correlation functions to access quasiprobability distribution of work
Santiago Hernández-Gómez, Takuya Isogawa, Alessio Belenchia +4
The Kirkwood-Dirac quasiprobability distribution, intimately connected with the quantum correlation function of two observables measured at distinct times, is becoming increasingly…
Energy exchange statistics and fluctuation theorem for non-thermal asymptotic states
Santiago Hernández-Gómez, Francesco Poggiali, Paola Cappellaro +4
Exchange energy statistics between two bodies at different thermal equilibrium obey the Jarzynski-Wójcik fluctuation theorem. The corresponding energy scale factor is the differenc…
Quasiprobabilities in quantum thermodynamics and many-body systems
Stefano Gherardini, Gabriele De Chiara
In this tutorial, we present the definition, interpretation and properties of some of the main quasiprobabilities that can describe the statistics of measurement outcomes evaluated…
Energetics of Fano coherence generation
Ludovica Donati, Francesco Saverio Cataliotti, Stefano Gherardini
In a multi-level quantum system Fano coherences stand for the formation of quantum coherences due to the interaction with the continuum of modes characterizing an incoherent proces…
Quantum speed limit for Kirkwood-Dirac quasiprobabilities
Sagar Silva Pratapsi, Sebastian Deffner, Stefano Gherardini
What is the minimal time until a quantum system can exhibit genuine quantum features? To answer this question we derive quantum speed limits for two-time correlation functions aris…