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- Consejo Nacional de Investigaciones Científicas y TécnicasAR255 papers
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20 papers · 1 filter
Non-coherent evolution of closed weakly interacting system leads to equidistribution of probabilities of microstates
A. P. Meilakhs
We introduce a concept of non-coherent evolution of macroscopic quantum systems. We show that for weakly interacting systems such evolution is a Markovian stochastic process. The t…
Ground state of composite bosons in low-dimensional graphs
Cecilia Cormick, Leonardo Ermann
We consider a system of composite bosons given by strongly bound fermion pairs tunneling through sites that form a low-dimensional network. It has been shown that the ground state…
Fokker-Planck treatment of nonlinearities in the dispersive coupling of an ion and an optical cavity
Alan Kahan, Leonardo Ermann, Marcos Saraceno +1
We complement previous studies of an ion coupled with an optical cavity in the dispersive regime, for a model which exhibits bistability of different configurations in the semiclas…
Energy dynamics, heat production and heat-work conversion with qubits: towards the development of quantum machines
Liliana Arrachea
We present an overview of recent advances in the study of energy dynamics and mechanisms for energy conversion in qubit systems with special focus on realizations in superconductin…
Impact of chaos on precursors of quantum criticality
Ignacio García-Mata, Diego A. Wisniacki, Eduardo G. Vergini
Excited-state quantum phase transitions (ESQPTs) are critical phenomena that generate singularities in the spectrum of quantum systems. {For systems with a classical counterpart,}…
Geometric optimization of non-equilibrium adiabatic thermal machines and implementation in a qubit system
Pablo Terren Alonso, Paolo Abiuso, Marti Perarnau-Llobet +1
We adopt a geometric approach to describe the performance of adiabatic quantum machines, operating under slow time-dependent driving and in contact to two or more reservoirs with a…