Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Giovanni Gramegna"'
Publikováno v:
Quantum, Vol 6, p 737 (2022)
We derive a universal nonperturbative bound on the distance between unitary evolutions generated by time-dependent Hamiltonians in terms of the difference of their integral actions. We apply our result to provide explicit error bounds for the rotatin
Externí odkaz:
https://doaj.org/article/2472eade83724d05a567e6bb26daef5d
Publikováno v:
Entropy, Vol 23, Iss 6, p 645 (2021)
Given the algebra of observables of a quantum system subject to selection rules, a state can be represented by different density matrices. As a result, different von Neumann entropies can be associated with the same state. Motivated by a minimality p
Externí odkaz:
https://doaj.org/article/9a00e3079de345bab66ea9f1cf1383f6
Publikováno v:
Physical Review Research, Vol 3, Iss 1, p 013152 (2021)
We propose a measurement setup reaching Heisenberg scaling precision for the estimation of any distributed parameter φ (not necessarily a phase) encoded into a generic M-port linear network composed only of passive elements. The scheme proposed can
Externí odkaz:
https://doaj.org/article/f87cef47524442668b2aae490621e06c
Publikováno v:
New Journal of Physics, Vol 23, Iss 5, p 053002 (2021)
We consider the estimation of an arbitrary parameter φ , such as the temperature or a magnetic field, affecting in a distributed manner the components of an arbitrary linear optical passive network, such as an integrated chip. We demonstrate that He
Externí odkaz:
https://doaj.org/article/06f35b6952cc4e39bbae3e272224e0e5
Publikováno v:
Proceedings, Vol 12, Iss 1, p 15 (2019)
We consider two alternative procedures which can be used to control the evolution of a generic finite-dimensional quantum system, one hinging upon a strong continuous coupling with a control potential and the other based on the application of frequen
Externí odkaz:
https://doaj.org/article/84a9553141884daabf2d5a3f746bf0f9
Recent developments in Quantum Machine Learning have seen the introduction of several models to generalize the classical perceptron to the quantum regime. The capabilities of these quantum models need to be determined precisely in order to establish
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::647c6f8fe986baacf2304040272c3587
https://hdl.handle.net/11368/3028324
https://hdl.handle.net/11368/3028324
We derive a universal nonperturbative bound on the distance between unitary evolutions generated by time-dependent Hamiltonians in terms of the difference of their integral actions. We apply our result to provide explicit error bounds for the rotatin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68b267a717a14333b509fbac619a832f
http://arxiv.org/abs/2111.08961
http://arxiv.org/abs/2111.08961
Publikováno v:
Entropy, Vol 23, Iss 645, p 645 (2021)
Entropy
Volume 23
Issue 6
Entropy
Volume 23
Issue 6
Given the algebra of observables of a quantum system subject to selection rules, a state can be represented by different density matrices. As a result, different von Neumann entropies can be associated with the same state. Motivated by a minimality p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d116f6b480cefe25abb64a4f9a815294
https://www.mdpi.com/1099-4300/23/6/645
https://www.mdpi.com/1099-4300/23/6/645
Publikováno v:
Gramegna, G, Triggiani, D, Facchi, P, Narducci, F A & Tamma, V 2021, ' Typicality of Heisenberg scaling precision in multi-mode quantum metrology ', Physical Review Research, vol. 3, no. 1, 013152, pp. 1-12 . https://doi.org/10.1103/PhysRevResearch.3.013152
We propose a measurement setup reaching Heisenberg scaling precision for the estimation of any distributed parameter $\varphi$ (not necessarily a phase) encoded into a generic $M$-port linear network composed only of passive elements. The scheme prop
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05de099b66404b42c34e55d25e871437
https://hdl.handle.net/10945/65596
https://hdl.handle.net/10945/65596
Publikováno v:
Journal of Physics A: Mathematical and Theoretical
The class of quantum operations known as Local Operations and Classical Communication (LOCC) induces a partial ordering on quantum states. We present the results of systematic numerical computations related to the volume (with respect to the unitaril
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::59c906e2631d3582f4368767c502246f