Zobrazeno 1 - 10
of 93
pro vyhledávání: '"Virzì, Salvatore"'
Autor:
Virzì, Salvatore, Meda, Alice, Redolfi, Elisa, Gramegna, Marco, Brida, Giorgio, Genovese, Marco, Degiovanni, Ivo Pietro
In this paper, we present a new experimental apparatus for the measurement of the detection efficiency of free-space single-photon detectors based on the substitution method. For the first time, we extend the analysis to account for the wavelength de
Externí odkaz:
http://arxiv.org/abs/2407.01120
Autor:
Bertaina, Gianluca, Clivati, Cecilia, Donadello, Simone, Liorni, Carlo, Meda, Alice, Virzì, Salvatore, Gramegna, Marco, Genovese, Marco, Levi, Filippo, Calonico, Davide, Dispenza, Massimiliano, Degiovanni, Ivo Pietro
Publikováno v:
Adv. Quantum Technol. 2400032 (2024)
The impact of noise sources in real-world implementations of Twin-Field Quantum Key Distribution (TF-QKD) protocols is investigated, focusing on phase noise from photon sources and connecting fibers. This work emphasizes the role of laser quality, ne
Externí odkaz:
http://arxiv.org/abs/2310.08621
Autor:
Virzì, Salvatore, Rebufello, Enrico, Atzori, Francesco, Avella, Alessio, Piacentini, Fabrizio, Lussana, Rudi, Cusini, Iris, Madonini, Francesca, Villa, Federica, Gramegna, Marco, Cohen, Eliahu, Degiovanni, Ivo Pietro, Genovese, Marco
Publikováno v:
Quantum Sci. Technol. 9, 045027 (2024)
Bell inequalities are one of the cornerstones of quantum foundations, and fundamental tools for quantum technologies. Recently, the scientific community worldwide has put a lot of effort towards them, which culminated with loophole-free experiments.
Externí odkaz:
http://arxiv.org/abs/2303.04787
Autor:
Virzì, Salvatore, Knoll, Laura T., Avella, Alessio, Piacentini, Fabrizio, Gherardini, Stefano, Gramegna, Marco, Kurizki, Gershon, Kofman, Abraham G., Degiovanni, Ivo Pietro, Genovese, Marco, Caruso, Filippo
Publikováno v:
Phys. Rev. Applied 21, 034014 (2024)
We propose and experimentally demonstrate a general method allowing us to unravel microscopic noise events that affect a continuous quantum variable. Such unraveling is achieved by frequent measurements of a discrete variable coupled to the continuou
Externí odkaz:
http://arxiv.org/abs/2212.12530
Autor:
Marletto, Chiara, Vedral, Vlatko, Virzì, Salvatore, Avella, Alessio, Piacentini, Fabrizio, Gramegna, Marco, Degiovanni, Ivo Pietro, Genovese, Marco
Publikováno v:
Sci. Adv. 7 (38), eabe4742 (2021)
We show that, by utilising temporal quantum correlations as expressed by pseudo-density operators (PDOs), it is possible to recover formally the standard quantum dynamical evolution as a sequence of teleportations in time. We demonstrate that any com
Externí odkaz:
http://arxiv.org/abs/2103.12636
Autor:
Virzi', Salvatore, Avella, Alessio, Piacentini, Fabrizio, Gramegna, Marco, Opatrny, Tomas, Kofman, Abraham, Kurizki, Gershon, Gherardini, Stefano, Caruso, Filippo, Degiovanni, Ivo Pietro, Genovese, Marco
Publikováno v:
Phys. Rev. Lett. 129, 030401 (2022)
We experimentally demonstrate, for the first time, noise diagnostics by repeated quantum measurements. Specifically, we establish the ability of a single photon, subjected to random polarisation noise, to diagnose non-Markovian temporal correlations
Externí odkaz:
http://arxiv.org/abs/2103.03698
Autor:
Clivati, Cecilia, Meda, Alice, Donadello, Simone, Virzì, Salvatore, Genovese, Marco, Levi, Filippo, Mura, Alberto, Pittaluga, Mirko, Yuan, Zhiliang L., Shields, Andrew J., Lucamarini, Marco, Degiovanni, Ivo Pietro, Calonico, Davide
Publikováno v:
Nature Communications13, 157 (2022)
Quantum mechanics allows the distribution of intrinsically secure encryption keys by optical means. Twin-field quantum key distribution is the most promising technique for its implementation on long-distance fibers, but requires stabilizing the optic
Externí odkaz:
http://arxiv.org/abs/2012.15199
Akademický článek
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Autor:
Virzí, Salvatore, Rebufello, Enrico, Avella, Alessio, Piacentini, Fabrizio, Gramegna, Marco, Berchera, Ivano Ruo, Degiovanni, Ivo Pietro, Genovese, Marco
Publikováno v:
Scientific Reportsvolume 9, Article number: 3030 (2019)
Recently, the fast development of quantum technologies led to the need for tools allowing the characterization of quantum resources. In particular, the ability to estimate non-classical aspects, e.g. entanglement and quantum discord, in two-qubit sys
Externí odkaz:
http://arxiv.org/abs/1810.09331
Akademický článek
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