Quasiprobabilities in quantum thermodynamics and many-body systems: A tutorial

S Gherardini, G De Chiara - arXiv preprint arXiv:2403.17138, 2024 - arxiv.org
Quasiprobabilities are mathematical quantities describing the statistics of measurement
outcomes evaluated at two or more times, which incorporate the incompatibility of the …

Quasiprobabilities in quantum thermodynamics and many-body systems

S Gherardini, G De Chiara - PRX Quantum, 2024 - APS
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 at …

Properties and Applications of the Kirkwood-Dirac Distribution

DRM Arvidsson-Shukur, WF Braasch Jr… - arXiv preprint arXiv …, 2024 - arxiv.org
The most famous quasi-probability distribution, the Wigner function, has played a pivotal role
in the development of a continuous-variable quantum theory that has clear analogues of …

Interferometry of quantum correlation functions to access quasiprobability distribution of work

S Hernández-Gómez, T Isogawa, A Belenchia… - npj Quantum …, 2024 - nature.com
Abstract The Kirkwood-Dirac quasiprobability distribution, intimately connected with the
quantum correlation function of two observables measured at distinct times, is becoming …

Quasiprobability distribution of work in the quantum Ising model

G Francica, L Dell'Anna - Physical Review E, 2023 - APS
A complete understanding of the statistics of the work done by quenching a parameter of a
quantum many-body system is still lacking in the presence of an initial quantum coherence …

Work statistics, quantum signatures, and enhanced work extraction in quadratic fermionic models

A Santini, A Solfanelli, S Gherardini, M Collura - Physical Review B, 2023 - APS
In quadratic fermionic models, we determine a quantum correction to the work statistics after
both a sudden quench and a time-dependent driving. Such a correction lies in the …

Work extraction from coherently activated maps via quantum switch

K Simonov, G Francica, G Guarnieri, M Paternostro - Physical Review A, 2022 - APS
We characterize the impact that the application of two maps in a quantum-controlled order
has on the process of work extraction via unitary cycles and its optimization. The control is …

Experimental characterization of the energetics of quantum logic gates

V Cimini, S Gherardini, M Barbieri, I Gianani… - npj Quantum …, 2020 - nature.com
We characterize the energetic footprint of a two-qubit quantum gate from the perspective of
non-equilibrium quantum thermodynamics. We experimentally reconstruct the statistics of …

Entropy of the quantum work distribution

A Kiely, E O'Connor, T Fogarty, GT Landi… - Physical Review …, 2023 - APS
The statistics of work done on a quantum system can be quantified by the two-point
measurement scheme. We show how the Shannon entropy of the work distribution admits a …

Quantum speed limit for Kirkwood-Dirac quasiprobabilities

SS Pratapsi, S Deffner, S Gherardini - arXiv preprint arXiv:2402.07582, 2024 - arxiv.org
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 …