Zobrazeno 1 - 10
of 97
pro vyhledávání: '"Stefano Gherardini"'
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-17 (2024)
Abstract In a multi-level quantum system Fano coherences stand for the formation of quantum coherences due to the interaction with the continuum of modes characterizing an incoherent process. In this paper we propose a V-type three-level quantum syst
Externí odkaz:
https://doaj.org/article/dbc6a667240643f787c6e2374ce69598
Autor:
Stefano Caputo, Silvia Viciani, Stefano Gherardini, Giacomo Borghini, Francesco Cataliotti, Lorenzo Mucchi
Publikováno v:
IEEE Access, Vol 12, Pp 148693-148705 (2024)
Noise Level Modulation (NLM) is a robust physical-layer security technique which uses the injection of random phase noise into the transmitted signal to provide confidentiality in optical networks. The legitimate receiver can seamlessly recover the i
Externí odkaz:
https://doaj.org/article/8eb527e21fca409e8e1b397cae09d76b
Autor:
Stefano Gherardini, Gabriele De Chiara
Publikováno v:
PRX Quantum, Vol 5, Iss 3, p 030201 (2024)
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 two or more times. Such statistics incorporate the incompatibilit
Externí odkaz:
https://doaj.org/article/7ad7f7b54ab6448395a770de5de3123b
Autor:
Santiago Hernández-Gómez, Stefano Gherardini, Alessio Belenchia, Andrea Trombettoni, Mauro Paternostro, Nicole Fabbri
Publikováno v:
npj Quantum Information, Vol 9, Iss 1, Pp 1-7 (2023)
Abstract We report on the experimental quantification of the contribution to non-equilibrium entropy production stemming from the quantum coherence content in the initial state of a qubit exposed to both coherent driving and dissipation. Our experime
Externí odkaz:
https://doaj.org/article/046ed748e4c743a8a02e6e3c1cd8614c
Publikováno v:
Entropy, Vol 26, Iss 7, p 568 (2024)
The metrological limits of thermometry operated in nonequilibrium dynamical regimes are analyzed. We consider a finite-dimensional quantum system, employed as a quantum thermometer, in contact with a thermal bath inducing Markovian thermalization dyn
Externí odkaz:
https://doaj.org/article/2a66adef14d6462ab1b96e7f952ad6bc
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-16 (2022)
Abstract Accurate manipulations of an open quantum system require a deep knowledge of its controllability properties and the information content of the implemented control fields. By using tools of information and quantum optimal control theory, we p
Externí odkaz:
https://doaj.org/article/59f5f1ecf1ac4383bb64757d860cdb29
Autor:
Matteo Lostaglio, Alessio Belenchia, Amikam Levy, Santiago Hernández-Gómez, Nicole Fabbri, Stefano Gherardini
Publikováno v:
Quantum, Vol 7, p 1128 (2023)
Recent work has revealed the central role played by the Kirkwood-Dirac quasiprobability (KDQ) as a tool to properly account for non-classical features in the context of condensed matter physics (scrambling, dynamical phase transitions) metrology (sta
Externí odkaz:
https://doaj.org/article/ef1b9f5c034a410080e034507496a64b
Publikováno v:
Machine Learning: Science and Technology, Vol 4, Iss 2, p 02LT01 (2023)
The undesired interaction of a quantum system with its environment generally leads to a coherence decay of superposition states in time. A precise knowledge of the spectral content of the noise induced by the environment is crucial to protect qubit c
Externí odkaz:
https://doaj.org/article/349a07d171914c018ed010843aea3ac2
Publikováno v:
Journal of Physics Communications, Vol 7, Iss 6, p 065007 (2023)
On a quantum superconducting processor we observe partial and infinite-temperature thermalization induced by a sequence of repeated quantum projective measurements, interspersed by a unitary (Hamiltonian) evolution. Specifically, on a qubit and two-q
Externí odkaz:
https://doaj.org/article/a8e998f093a24c0e878c654f6c4b2a5f
Publikováno v:
Physical Review Research, Vol 4, Iss 2, p 023027 (2022)
The optimally designed control of quantum systems is playing an increasingly important role to engineer novel and more efficient quantum technologies. Here, in the scenario represented by controlling an arbitrary quantum system via the interaction wi
Externí odkaz:
https://doaj.org/article/8ff97908c4c24bd0a2e21df6598251ce