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 …

Work fluctuations and entanglement in quantum batteries

S Imai, O Gühne, S Nimmrichter - Physical Review A, 2023 - APS
We consider quantum batteries given by composite interacting quantum systems in terms of
the thermodynamic work cost of local random unitary processes. We characterize quantum …

A Wigner quasiprobability distribution of work

F Cerisola, F Mayo, AJ Roncaglia - Entropy, 2023 - mdpi.com
In this article, we introduce a quasiprobability distribution of work that is based on the Wigner
function. This proposal rests on the idea that the work conducted on an isolated system can …

Experimentally reducing the quantum measurement back action in work distributions by a collective measurement

KD Wu, Y Yuan, GY **ang, CF Li, GC Guo… - Science …, 2019 - science.org
In quantum thermodynamics, the standard approach to estimating work fluctuations in
unitary processes is based on two projective measurements, one performed at the …

An autonomous quantum machine to measure the thermodynamic arrow of time

J Monsel, C Elouard, A Auffèves - npj Quantum Information, 2018 - nature.com
According to the second law of thermodynamics, the evolution of physical systems has a
preferred direction, that is characterized by some positive entropy production. Here we …

Controlling work output and coherence in finite-time quantum Otto engines through monitoring

R Shastri, BP Venkatesh - Physical Review E, 2024 - APS
We examine the role of diagnostic quantum measurements on the work statistics of a finite-
time quantum Otto heat engine operated in the steady state. We consider three pointer …

Single-energy-measurement integral fluctuation theorem and nonprojective measurements

D Alonso, A Ruiz García - Physical Review E, 2023 - APS
We study a Jarzysnki-type equality for work in systems that are monitored using
nonprojective unsharp measurements. The information acquired by the observer from the …

Quantum Non-Demolition Measurements and Leggett-Garg inequality

P Solinas, S Gherardini - arxiv preprint arxiv:2408.00088, 2024 - arxiv.org
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 …

Randomized measurements as a tool in quantum information processing

S Imai - 2023 - dspace.ub.uni-siegen.de
With limited control over quantum systems, how can we extract information about them and
characterize their properties? This thesis addresses this question from several perspectives …

Certifying nonclassical behavior for negative Keldysh quasiprobabilities

PP Potts - Physical Review Letters, 2019 - APS
We introduce an experimental test for ruling out classical explanations for the statistics
obtained when measuring arbitrary observables at arbitrary times using individual detectors …