Experimental optical simulator of reconfigurable and complex quantum environment

P Renault, J Nokkala, G Roeland, NY Joly, R Zambrini… - Prx quantum, 2023 - APS
No quantum system can be considered totally isolated from its environment. In most cases
the interaction between the system of interest and the external degrees of freedom deeply …

Observing Schrödinger's cat with artificial intelligence: emergent classicality from information bottleneck

Z Zhang, YZ You - Machine Learning: Science and Technology, 2024 - iopscience.iop.org
We train a generative language model on the randomized local measurement data collected
from Schrödinger's cat quantum state. We demonstrate that the classical reality emerges in …

Decoherence without entanglement and quantum Darwinism

G García-Pérez, DA Chisholm, MAC Rossi… - Physical Review …, 2020 - APS
It is often assumed that decoherence arises as a result of the entangling interaction between
a quantum system and its environment, as a consequence of which the environment …

Limits on quantum measurement engines

G Perna, E Calzetta - Physical Review E, 2024 - APS
A quantum measurement involves energy exchanges between the system to be measured
and the measuring apparatus. Some of them involve energy losses, for example because …

Time and classical equations of motion from quantum entanglement via the Page and Wootters mechanism with generalized coherent states

C Foti, A Coppo, G Barni, A Cuccoli… - Nature communications, 2021 - nature.com
We draw a picture of physical systems that allows us to recognize what “time” is by requiring
consistency with the way that time enters the fundamental laws of Physics. Elements of the …

Threshold size for the emergence of classical-like behavior

A Coppo, N Pranzini, P Verrucchi - Physical Review A, 2022 - APS
In this work we design a procedure to estimate the minimum size beyond which a system is
amenable to a classical-like description, ie, a description based on representative points in …

Emergent classicality in general multipartite states and channels

XL Qi, D Ranard - Quantum, 2021 - quantum-journal.org
In a quantum measurement process, classical information about the measured system
spreads throughout the environment. Meanwhile, quantum information about the system …

Multiclass classification of dephasing channels

AM Palmieri, F Bianchi, MGA Paris, C Benedetti - Physical Review A, 2021 - APS
We address the use of neural networks (NNs) in classifying the environmental parameters of
single-qubit dephasing channels. In particular, we investigate the performance of linear …

Premeasurement reliability and accessibility of quantum measurement apparatuses

N Pranzini, P Verrucchi - Physical Review A, 2024 - APS
We propose a characterization of measurement apparatuses based on their
premeasurement reliability and accessibility. Our notion of premeasurement reliability …

From a quantum theory to a classical one

A Coppo, A Cuccoli, C Foti, P Verrucchi - Soft Computing, 2020 - Springer
We present and discuss a formal approach for describing the quantum to classical crossover
based on the group-theoretic construction of generalized coherent states. The method was …