Zobrazeno 1 - 10
of 172
pro vyhledávání: '"Paolo Bordone"'
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-17 (2024)
Abstract We address quantum metrology in critical spin chains with anisotropy and Dzyaloshinskii–Moriya (DM) interaction, and show how local and quasi-local measurements may be exploited to characterize global properties of the systems. In particul
Externí odkaz:
https://doaj.org/article/fe8fa56600e34d6c87393c006a065927
Publikováno v:
New Journal of Physics, Vol 26, Iss 5, p 053024 (2024)
We address quantum characterization of anisotropic spin chains in the presence of anti-symmetric exchange, and investigate whether the Hamiltonian parameters of the chain may be estimated with precision approaching the ultimate limit imposed by quant
Externí odkaz:
https://doaj.org/article/86e80a7830314171aae20d6add393734
Publikováno v:
Physical Review Research, Vol 5, Iss 4, p 043159 (2023)
Hole-spin qubits in semiconductors represent a mature platform for quantum technological applications. Here we consider their use as quantum sensors, and specifically for inferring the presence and estimating the distance from the qubit of a remote c
Externí odkaz:
https://doaj.org/article/f1c068d8da0943878b9760783ae6f540
Publikováno v:
Entropy, Vol 23, Iss 1, p 85 (2021)
Continuous-time quantum walk describes the propagation of a quantum particle (or an excitation) evolving continuously in time on a graph. As such, it provides a natural framework for modeling transport processes, e.g., in light-harvesting systems. In
Externí odkaz:
https://doaj.org/article/4db9915e9f4a412b8ab2b8a184a2b112
Publikováno v:
Physical Review B. 106
Graphene nanoribbons provide an ideal platform for electronic interferometry in the Integer Quantum Hall regime. Here, we solve the time-dependent four-component Schroedinger equation for single carriers in graphene and expose several dynamical effec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d1f85942c79c6965a0b58664c19f6b33
https://doi.org/10.1103/physrevb.106.165402
https://doi.org/10.1103/physrevb.106.165402
Autor:
Devashish Pandey, Laura Bellentani, Matteo Villani, Guillermo Albareda, Paolo Bordone, Andrea Bertoni, Xavier Oriols
Publikováno v:
Applied Sciences, Vol 9, Iss 11, p 2300 (2019)
Measuring properties of quantum systems is governed by a stochastic (collapse or state-reduction) law that unavoidably yields an uncertainty (variance) associated with the corresponding mean values. This non-classical source of uncertainty is known t
Externí odkaz:
https://doaj.org/article/52dd4faf41d642969170bde2465acb47
Coherent transport of an excitation through a network corresponds to continuous-time quantum walk on a graph, and the transport properties of the system may be radically different depending on the graph and on the initial state. The transport efficie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0abb6247f00be2ba24f1d31f384afe5
http://arxiv.org/abs/2205.09408
http://arxiv.org/abs/2205.09408
A fully connected vertex $w$ in a simple graph $G$ of order $N$ is a vertex connected to all the other $N-1$ vertices. Upon denoting by $L$ the Laplacian matrix of the graph, we prove that the continuous-time quantum walk (CTQW) -- with Hamiltonian $
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a4a313e48d07e60559e749aed57f1675
https://hdl.handle.net/11380/1284745
https://hdl.handle.net/11380/1284745
We examine the effect of the decoherence-induced reduction of correlation length on a one-dimensional scattering problem by solving numerically the evolution equation for the Wigner function with decoherence proposed in [L. Barletti, G. Frosali and E
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c3975ecc06ca1e166c111ab4e3325379
Publikováno v:
Physical review. E
info:cnr-pdr/source/autori:Candeloro A.; Razzoli L.; Bordone P.; Paris M.G.A./titolo:Role of topology in determining the precision of a finite thermometer/doi:10.1103%2FPhysRevE.104.014136/rivista:Physical review. E (Print)/anno:2021/pagina_da:014136-1/pagina_a:014136-14/intervallo_pagine:014136-1–014136-14/volume:104
info:cnr-pdr/source/autori:Candeloro A.; Razzoli L.; Bordone P.; Paris M.G.A./titolo:Role of topology in determining the precision of a finite thermometer/doi:10.1103%2FPhysRevE.104.014136/rivista:Physical review. E (Print)/anno:2021/pagina_da:014136-1/pagina_a:014136-14/intervallo_pagine:014136-1–014136-14/volume:104
Temperature fluctuations of a finite system follows the Landau bound $\delta T^2 = T^2/C(T)$ where $C(T)$ is the heat capacity of the system. In turn, the same bound sets a limit to the precision of temperature estimation when the system itself is us
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::54dc8d98215908596f604a0b8f0c6040