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pro vyhledávání: '"Mele, Francesco"'
Quantum information theory is plagued by the problem of regularisations, which require the evaluation of formidable asymptotic quantities. This makes it computationally intractable to gain a precise quantitative understanding of the ultimate efficien
Externí odkaz:
http://arxiv.org/abs/2405.09613
Autor:
Mele, Francesco Anna, Mele, Antonio Anna, Bittel, Lennart, Eisert, Jens, Giovannetti, Vittorio, Lami, Ludovico, Leone, Lorenzo, Oliviero, Salvatore F. E.
Quantum state tomography with rigorous guarantees with respect to the trace distance, the most operationally meaningful metric for distinguishing quantum states, has been studied extensively for finite-dimensional systems; however, it remains almost
Externí odkaz:
http://arxiv.org/abs/2405.01431
Publikováno v:
Phys. Rev. A 110, 012460, 2024
Quantum optical systems are typically affected by two types of noise: photon loss and dephasing. Despite extensive research on each noise process individually, a comprehensive understanding of their combined effect is still lacking. A crucial problem
Externí odkaz:
http://arxiv.org/abs/2401.15634
Autor:
Mele, Francesco Anna, De Palma, Giacomo, Fanizza, Marco, Giovannetti, Vittorio, Lami, Ludovico
The development of quantum repeaters poses significant challenges in terms of cost and maintenance, prompting the exploration of alternative approaches for achieving long-distance quantum communication. In the absence of quantum repeaters and under t
Externí odkaz:
http://arxiv.org/abs/2309.17066
The two-way capacities of quantum channels determine the ultimate entanglement and secret-key distribution rates achievable by two distant parties that are connected by a noisy transmission line, in absence of quantum repeaters. Since repeaters will
Externí odkaz:
http://arxiv.org/abs/2303.12867
Publikováno v:
Phys. Rev. A 106, 042437 (2022)
Is quantum communication possible over an optical fibre with transmissivity $\lambda\leq 1/2$ ? The answer is well known to be negative if the environment with which the incoming signal interacts is initialised in a thermal state. However, in [PRL 12
Externí odkaz:
http://arxiv.org/abs/2204.13129
Publikováno v:
Phys. Rev. Lett. 129, 180501 (2022)
In the absence of quantum repeaters, quantum communication proved to be nearly impossible across optical fibres longer than $\gtrsim 20\text{ km}$ due to the drop of transmissivity below the critical threshold of $1/2$. However, if the signals fed in
Externí odkaz:
http://arxiv.org/abs/2204.13128
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Autor:
Baso, Giacomo1 (AUTHOR), Mele, Francesco2 (AUTHOR), Del Giudice, Elda3 (AUTHOR), Leon, Alberta3 (AUTHOR), Pantoni, Leonardo1,2 (AUTHOR) leonardo.pantoni@unimi.it
Publikováno v:
Neurological Sciences. Sep2023, Vol. 44 Issue 9, p3299-3302. 4p. 1 Black and White Photograph.
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