168 citations · 420 across the 18 of their papers we have counts for
19 papers
Probing non-adiabaticity in a quantum Otto cycle through quantum texture and imaginarity
Jonas F. G. Santos
Finite-time driving in quantum thermodynamic cycles inevitably generates coherences in the instantaneous energy basis, leading to quantum friction and degrading the operational per…
Exploring quantum thermodynamics with NMR
Carlos H. S. Vieira, Jefferson L. D. de Oliveira, Jonas F. G. Santos +2
Quantum thermodynamics seeks to extend non-equilibrium stochastic thermodynamics to small quantum systems where non-classical features are essential to its description. Such a rese…
-symmetric effects in measurement-based quantum thermal machines
Jonas F. G. Santos, Pritam Chattopadhyay
Measurement-based quantum thermal machines are fascinating models of thermodynamic cycles where measurement protocols play an important role in the performance and functioning of t…
Coherence behavior of strongly coupled bosonic modes
Jucelino F. Sousa, Carlos H. S. Vieira, Jonas F. G. Santos +1
We study the effect of the intermode coupling in the generation of coherence when two bosonic modes are bilinearly coupled. We consider the case for which the two modes are weakly…
Suppressing coherence effects in quantum-measurement based engines
Zhiyuan Lin, Shanhe Su, Jingyi Chen +2
The recent advances in the study of thermodynamics of microscopic processes have driven the search for new developments in energy converters utilizing quantum effects. We here prop…
Nonequilibrium fluctuations of a quantum heat engine
Tobias Denzler, Jonas F. G. Santos, Eric Lutz +1
The thermodynamic properties of quantum heat engines are stochastic owing to the presence of thermal and quantum fluctuations. We here experimentally investigate the efficiency and…
Quantum thermodynamics aspects with a thermal reservoir based on -symmetric Hamiltonians
Jonas F. G. Santos, Fabricio S. Luiz
We present results concerning aspects of quantum thermodynamics under the background of non-Hermitian quantum mechanics for the dynamics of a quantum harmonic oscillator. Since a b…
Coherence dynamics induced by attenuation and amplification Gaussian channels
Jonas F. G. Santos, C. H. S. Vieira
Quantum Gaussian channels play a key role in quantum information theory. In particular, the attenuation and amplification channels are useful to describe noise and decoherence effe…
Employing Non-Markovian effects to improve the performance of a quantum Otto refrigerator
Patrice A. Camati, Jonas F. G. Santos, Roberto M. Serra
The extension of quantum thermodynamics to situations that go beyond standard thermodynamic settings comprises an important and interesting aspect of its development. One such situ…
Heat flow and noncommutative quantum mechanics in phase-space
Jonas F. G. Santos
In this work, we investigate the heat flow of two interacting quantum systems on the perspective of noncommutativity phase-space effects and show that by controlling the new consta…
Negativity-Mutual Information conversion and coherence in two-coupled harmonic oscillators
Jonas F. G. Santos, Carlos H. S. Vieira, Pedro R. Dieguez
Quantum information is a common topic of research in many areas of quantum physics, such as quantum communication and quantum computation, as well as quantum thermodynamics. It can…
Noncommutative phase-space effects in thermal diffusion of Gaussian states
Jonas F. G. Santos
Noncommutative phase-space and its effects have been studied in different settings in physics, in order to unveil a better understanding of phase-space structures. Here, we use the…
Coherence effects in the performance of the quantum Otto heat engine
Patrice A. Camati, Jonas F. G. Santos, Roberto M. Serra
The working substance fueling a quantum heat engine may contain coherence in its energy basis, depending on the dynamics of the engine cycle. In some models of quantum Otto heat en…
Gravitational Quantum Well as an Effective Quantum Heat Engine
Jonas F. G. Santos
In this work the gravitational quantum well is used to model an effective two level system and to perform two thermodynamic cycles, the isogravitational and the isoenergetic ones.…
Non-Hermitian noncommutative quantum mechanics
Jonas F. G. Santos, Fabricio. S. Luiz, Oscar. S. Duarte +1
In this work we present a general formalism to treat non-Hermitian and noncommutative Hamiltonians. This is done employing the phase-space formalism of quantum mechanics, which all…
Quantum engines and the range of the second law of thermodynamics in the noncommutative phase-space
Jonas F. G. Santos, Alex E. Bernardini
Two testable schemes for quantum heat engines are investigated under the quantization framework of noncommutative (NC) quantum mechanics (QM). By identifying the phenomenological c…
Gaussian fidelity distorted by external fields
Jonas F. G. Santos, Alex E. Bernardini
Gaussian state decoherence aspects due to interacting magnetic-like and gravitational fields are quantified through the quantum fidelity and Shannon entropy in the scope of the pha…
Probing phase-space noncommutativity through quantum mechanics and thermodynamics of free particles and quantum rotors
Catarina Bastos, Alex E. Bernardini, Jonas F. G. Santos
Novel quantization properties related to the state vectors and the energy spectrum of a two-dimensional system of free particles are obtained in the framework of noncommutative (NC…
CB damping of primordial gravitational waves and the fine-tuning of the CB temperature anisotropy
Alex E. Bernardini, Jonas F. G. Santos
Damping of primordial gravitational waves due to the anisotropic stress contribution owing to the cosmological neutrino background (CB) is investigated in the context of a radia…