Quantum 7, 1074 (2023) D.A. Chisholm, L. Innocenti, G.M. Palma While the terms “redundancy” and “consensus” are often used as synonyms in the context of quantum objectivity, we show here that these should be understood as two related but distinct notions, that quantify different features of the quantum-toclassical transition. We show that the two main…

Communication Physics 6, 118 (2023) L. Innocenti, S. Lorenzo, I. Palmisano, A. Ferraro, M. Paternostro, and G. M. Palma Quantum extreme learning machines (QELMs) aim to efficiently post-process the outcome of fixed — generally uncalibrated — quantum devices to solve tasks such as the estimation of the properties of quantum states. The characterisation of their…

Quantum Science and Technology 8, 045018 (2023) Ilaria Gianani, Alessio Belenchia, Stefano Gherardini, Vincenzo Berardi, Marco Barbieri, and Mauro Paternostro Quantum coherence is a central ingredient in quantum physics with several theoretical and technological ramifications. In this work we consider a figure of merit encoding the information on how the coherence generated on average by…

npj Quantum Information 9, 86 (2023) S. Hernández-Gómez, S. Gherardini, A. Belenchia, A. Trombettoni, M. Paternostro and N. Fabbri We report the experimental quantication of the contribution to non-equilibrium entropy production that stems from the quantum coherence content in the initial state of a qubit exposed to both coherent driving and dissipation. Our…