Zobrazeno 1 - 10
of 90
pro vyhledávání: '"Vallejos, Raúl O."'
Autor:
Correia, Pedro S., Carvalho, Gabriel Dias, de Oliveira, Thiago R., Vallejos, Raúl O., de Melo, Fernando
Publikováno v:
Phys. Rev. Lett. 133, 060401 (2024)
With the control of ever more complex quantum systems becoming a reality, new scenarios are emerging where generalizations of the most foundational aspects of statistical quantum mechanics are imperative. In such experimental scenarios the often natu
Externí odkaz:
http://arxiv.org/abs/2308.16330
Autor:
Tacla, Alexandre B., O'Neill, Nina Machado, Carlo, Gabriel G., de Melo, Fernando, Vallejos, Raul O.
Here we investigate the use of the majorization-based indicator introduced in [R. O. Vallejos, F. de Melo, and G. G. Carlo, Phys. Rev. A 104, 012602 (2021)] as a way to benchmark the complexity within reach of quantum processors. By considering speci
Externí odkaz:
http://arxiv.org/abs/2304.04894
Autor:
Vallejos, Raúl O., Correia, Pedro Silva, Obando, Paola Concha, O'Neill, Nina Machado, Tacla, Alexandre Baron, de Melo, Fernando
The characterization of physical systems relies on the observable properties which are measured, and how such measurements are performed. Here we analyze two ways of assigning a description to a quantum system assuming that we only have access to coa
Externí odkaz:
http://arxiv.org/abs/2205.07956
Publikováno v:
Phys. Rev. A 104, 012602 (2021)
We test the principle of majorization [J. I. Latorre and M. A. Martin-Delgado, Phys. Rev. A 66, 022305 (2002)] in random circuits. Three classes of circuits were considered: (i) universal, (ii) classically simulatable, and (iii) neither universal nor
Externí odkaz:
http://arxiv.org/abs/2102.09999
Publikováno v:
Phys. Rev. A 103, 052210 (2021)
As a universal theory of physics, quantum mechanics must assign states to every level of description of a system -- from a full microscopic description, all the way up to an effective macroscopic characterization -- and also to describe the interconn
Externí odkaz:
http://arxiv.org/abs/2007.14370
Akademický článek
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Publikováno v:
Phys. Rev. A 99, 042125 (2019)
A general semiclassical method in phase space based on the final value representation of the Wigner function is considered that bypasses caustics and the need to root-search for classical trajectories. We demonstrate its potential by applying the met
Externí odkaz:
http://arxiv.org/abs/1809.04139
Publikováno v:
Phys. Rev. E 95, 062213 (2017)
We study the completely synchronized states (CSSs) of a system of coupled logistic maps as a function of three parameters: interaction strength ($\varepsilon$), range of the interaction ($\alpha$), that can vary from first-neighbors to global couplin
Externí odkaz:
http://arxiv.org/abs/1802.10539
Publikováno v:
Phys. Rev. E 96, 062209 (2017)
We revisit the numerical calculation of generalized Lyapunov exponents, $L$($q$), in deterministic dynamical systems. The standard method consists of adding noise to the dynamics in order to use importance sampling algorithms. Then $L$($q$) is obtain
Externí odkaz:
http://arxiv.org/abs/1802.10482
We derive an extension of the standard time dependent WKB theory which can be applied to propagate coherent states and other strongly localised states for long times. It allows in particular to give a uniform description of the transformation from a
Externí odkaz:
http://arxiv.org/abs/1112.4056