Zobrazeno 1 - 10
of 216
pro vyhledávání: '"Rosa, Dario"'
Publikováno v:
New J. Phys. 26 (2024) 083018
We present numerical results for the Rosenzweig Porter model for all symmetry classes of the Dyson threefold way. We analyzed the fluctuation properties in the eigenvalue spectra, and compared them with existing and new analytical results. Based on t
Externí odkaz:
http://arxiv.org/abs/2404.05755
Autor:
Singh, Varinder, Shaghaghi, Vahid, Pandit, Tanmoy, Beetar, Cameron, Benenti, Giuliano, Rosa, Dario
We present a detailed study of an asymmetrically driven quantum Otto engine with a time-dependent harmonic oscillator as its working medium. We obtain analytic expressions for the upper bounds on the efficiency of the engine for two different driving
Externí odkaz:
http://arxiv.org/abs/2310.06512
Publikováno v:
Phys. Rev. A 109, 022607 (2024)
We introduce a quantum charging distance as the minimal time that it takes to reach one state (charged state) from another state (depleted state) via a unitary evolution, assuming limits on the resources invested into the driving Hamiltonian. For pur
Externí odkaz:
http://arxiv.org/abs/2308.16086
We demonstrate that an image recognition algorithm based on a convolutional neural network provides a powerful procedure to differentiate between ergodic, non-ergodic extended (fractal) and localized phases in various systems: single-particle models,
Externí odkaz:
http://arxiv.org/abs/2306.01402
The generation of a large amount of entanglement is a necessary condition for a quantum computer to achieve quantum advantage. In this paper, we propose a method to efficiently generate pseudo-random quantum states, for which the degree of multiparti
Externí odkaz:
http://arxiv.org/abs/2302.04101
Understanding the mechanisms underlying many-body quantum chaos is one of the big challenges in theoretical physics. We tackle this problem by considering a set of perturbed quadratic Sachdev-Ye-Kitaev (SYK) Hamiltonians defined on graphs. This allow
Externí odkaz:
http://arxiv.org/abs/2302.00917
Autor:
Šafránek, Dominik, Rosa, Dario
Publikováno v:
Phys. Rev. A 108, 022208 (2023)
We present a method to estimate the probabilities of outcomes of a quantum observable, its mean value, and higher moments by measuring any other observable. This method is general and can be applied to any quantum system. In the case of estimating th
Externí odkaz:
http://arxiv.org/abs/2301.10428
We propose a general computational framework for optimizing model-dependent parameters in quantum batteries (QB). We apply this method to two different charging scenarios in the micromaser QB and we discover a new charging protocol for stabilizing th
Externí odkaz:
http://arxiv.org/abs/2301.09408
Publikováno v:
Entropy 25, 430 (2023)
We consider a micromaser model of a quantum battery, where the battery is a single mode of the electromagnetic field in a cavity, charged via repeated interactions with a stream of qubits, all prepared in the same non-equilibrium state, either incohe
Externí odkaz:
http://arxiv.org/abs/2212.13417
Publikováno v:
Entropy 25, 97 (2023)
We study the dynamical generation of entanglement for a two-body interacting system, starting from a separable coherent state. We show analytically that in the quasiclassical regime the entanglement growth rate can be simply computed by means of the
Externí odkaz:
http://arxiv.org/abs/2211.11213