Event: Physics colloquium Speaker: Tjerk Oosterkamp Place: Groningen University Date: 21 September 2023
matteo
Quantum Science and Technology 8, 035006 (2023)
Gabriele Lo Monaco, Luca Innocenti, Dario Cilluffo, D A Chisholm, Salvatore Lorenzo and G Massimo Palma
Quantum information scrambling (QIS), from the perspective of quantum information theory, is generally understood as local non-retrievability of information evolved through some dynamical process, and is often quantified via entropic quantities such…
A quantum state is said to be objective if multiple observers are able to recover information about the state and agree among themselves. This is in turn possible only if said information was encoded multiple times into the surrounding environment. In this paper, we show how it is not always possible for the observers to…
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…
Event: Italian Quantum Information Science (IQIS) Speaker: D.A. Chisholm Place: University of Trieste, Trieste Date: 18 September 2023
Event: Fundamental Problems in Quantum Physics 2023 Speaker: José Luis Gaona Reyes Place: University of Trieste Date: 14 September 2023
Event: Foundamental Problems in Quantum Physics 2023 Speaker: D.A. Chisholm Place: University of Trieste, Trieste Date: 14 September 2023