103 citations · 446 across the 11 of their papers we have counts for
11 papers
Nuclear Physics in the Era of Quantum Computing and Quantum Machine Learning
J. E. García-Ramos, A. Sáiz, J. M. Arias +2
In this paper, the application of quantum simulations and quantum machine learning to solve low-energy nuclear physics problems is explored. The use of quantum computing to deal wi…
Quantum Phase Transitions in periodically quenched systems
Á. Sáiz, J. Khalouf-Rivera, J. M. Arias +2
Quantum phase transitions encompass a variety of phenomena that occur in quantum systems exhibiting several possible symmetries. Traditionally, these transitions are explored by co…
Digital quantum simulation of an extended Agassi model: Using machine learning to disentangle its phase-diagram
Álvaro Sáiz, José-Enrique García-Ramos, José Miguel Arias +2
A digital quantum simulation for the extended Agassi model is proposed using a quantum platform with eight trapped ions. The extended Agassi model is an analytically solvable model…
Excited-state quantum phase transitions in a two-fluid Lipkin model
J. E. Garcia-Ramos, P. Perez-Fernandez, J. M. Arias
Background: Composed systems have became of great interest in the framework of the ground state quantum phase transitions (QPTs) and many of their properties have been studied in d…
From thermal to excited-state quantum phase transitions ---the Dicke model
P. Pérez-Fernández, A. Relaño
We study the thermodynamics of the full version of the Dicke model, including all the possible values of the total angular momentum , with both microcanonical and canonical ense…
Critical quasienergy states in driven many-body systems
Victor Manuel Bastidas, Georg Engelhardt, Pedro Perez-Fernandez +2
We discuss singularities in the spectrum of driven many-body spin systems. In contrast to undriven models, the driving allows us to control the geometry of the quasienergy landscap…
Quantum phase transitions of atom-molecule Bose mixtures in a double-well potential
Armando Relaño, Jorge Dukelsky, Pedro Perez-Fernandez +1
The ground state and spectral properties of Bose gases in double-well potentials are studied in two different scenarios: i) an interacting atomic Bose gas, and ii) a mixture of an…
Quantum criticality and dynamical instability in the kicked top
V. M. Bastidas, P. Perez-Fernandez, M. Vogl +1
We investigate precursors of critical behavior in the quasienergy spectrum due to the dynamical instability in the kicked top. Using a semiclassical approach, we analytically obtai…
Quantum quench influenced by an excited-state phase transition
P. Perez-Fernandez, P. Cejnar, J. M. Arias +3
We analyze excited-state quantum phase transitions (ESQPTs) in three schematic (integrable and nonintegrable) models describing a single-mode bosonic field coupled to a collection…
Decoherence due to an excited state quantum phase transition in a two-level boson model
P. Perez-Fernandez, A. Relano, J. M. Arias +2
The decoherence induced on a single qubit by its interaction with the environment is studied. The environment is modelled as a scalar two-level boson system that can go through eit…
Decoherence as a signature of an excited state quantum phase transition
A. Relano, J. M. Arias, J. Dukelsky +2
We analyze the decoherence induced on a single qubit by the interaction with a two-level boson system with critical internal dynamics. We explore how the decoherence process is aff…