Artur M. Lacerda

ORCID: 0000-0003-4955-869X
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About
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Research Areas
  • Advanced Thermodynamics and Statistical Mechanics
  • Spectroscopy and Quantum Chemical Studies
  • Quantum many-body systems
  • Quantum and electron transport phenomena
  • Quantum Information and Cryptography
  • Electron Spin Resonance Studies
  • Thermal properties of materials
  • Molecular spectroscopy and chirality
  • Topological Materials and Phenomena
  • Advanced NMR Techniques and Applications
  • Theoretical and Computational Physics
  • Quantum chaos and dynamical systems
  • Thermography and Photoacoustic Techniques
  • Advanced Semiconductor Detectors and Materials
  • Thermal Radiation and Cooling Technologies
  • Statistical Mechanics and Entropy
  • Quantum Computing Algorithms and Architecture
  • Calibration and Measurement Techniques

Trinity College Dublin
2021-2025

Universidade de São Paulo
2021

In the mesoscopic leads technique, continuum environments at finite temperature are modeled via a finite-set modes, which in turn damped by Markovian dissipation. Here, authors extended this approach to include arbitrary time dependence Hamiltonian of central system and performed detailed assessment thermodynamic quantities. They illustrated their applying technique driven resonant level model double dot system, is noninteracting exhibiting rectification.

10.1103/physrevb.107.195117 article EN Physical review. B./Physical review. B 2023-05-10

Understanding the entropy production of systems strongly coupled to thermal baths is a core problem both quantum thermodynamics and mesoscopic physics. While many techniques exist accurately study in such systems, they typically require microscopic description baths, which can become numerically intractable for large systems. Alternatively an open-systems approach be employed with all nuances associated various levels approximation. Recently, leads has emerged as powerful method studying...

10.1103/physreve.110.014125 article EN Physical review. E 2024-07-17

In a transition between nonequilibrium steady states, the entropic cost associated with maintenance of steady-state currents can be distinguished from that arising itself through concepts excess/housekeeping entropy flux and adiabatic/nonadiabatic production. The thermodynamics this is embodied by Hatano-Sasa relation. letter, we show for slow quantum states nonadiabatic production is, to leading order, given path action respect Riemannian metric in parameter space which connected...

10.48550/arxiv.2501.08858 preprint EN arXiv (Cornell University) 2025-01-15

We study the nonequilibrium steady state thermodynamics of a photodevice which can operate as solar cell or photoconductor, depending on degree asymmetry junction. The thermodynamic efficiency is captured by single coefficient performance. Using minimal model based two-level system, we show that when Coulomb interaction energy matches transport gap junction, photoconductor displays maximal response, performance, and signal-to-noise ratio, while same regime always detrimental for cell....

10.1103/physrevresearch.7.013252 article EN cc-by Physical Review Research 2025-03-07

We study dephasing enhanced transport in boundary-driven quasiperiodic systems. Specifically, we consider modeled by current-preserving Lindblad dissipators acting on the noninteracting Aubry-Andr\'e-Harper and Fibonacci bulk The former is known to undergo a critical localization transition with suppression of ballistic above value potential. At point, presence nonergodic extended states yields anomalous subdiffusion. model, other hand, continuously varying exponent depending potential...

10.1103/physrevb.104.174203 article EN Physical review. B./Physical review. B 2021-11-03

We study the nonequilibrium steady state thermodynamics of a photodevice which can operate as solar cell or photoconductor, depending on degree asymmetry junction. The thermodynamic efficiency is captured by single coefficient performance. Using minimal model, we show that when electron repulsion energy matches transport gap junction, photoconductor displays maximal response, performance and signal-to-noise ratio, while same regime always detrimental for cell. Nevertheless, find beneficial...

10.48550/arxiv.2407.01805 preprint EN arXiv (Cornell University) 2024-07-01

An environment interacting with a quantum system can enhance transport through the suppression of effects responsible for localization. In this paper, we study interplay between bulk dephasing and linear potential in boundary-driven tight-binding chain. A induces Wannier-Stark localization absence noise, while diffusive tilt. We derive an approximate expression steady-state current as function both tilt which closely matches exact solution wide range parameters. From it, find that maximum...

10.48550/arxiv.2407.21715 preprint EN arXiv (Cornell University) 2024-07-31

An environment interacting with a quantum system can enhance transport through the suppression of effects responsible for localization. In this paper, we study interplay between bulk dephasing and linear potential in boundary-driven tight-binding chain. A induces Wannier-Stark localization absence noise, while diffusive tilt. We derive an approximate expression steady-state current as function both tilt which closely matches exact solution wide range parameters. From it, find that maximum...

10.3389/fphy.2024.1474018 article EN cc-by Frontiers in Physics 2024-10-22

Understanding the thermodynamics of driven quantum systems strongly coupled to thermal baths is a central focus and mesoscopic physics. A variety different methodological approaches exist in literature, all with their own advantages disadvantages. The leads approach was recently generalised steady state machines has ability replicate Landauer Büttiker theory non-interacting limit. In this set discretised lead modes, each locally damped, provide markovian embedding for baths. work we further...

10.48550/arxiv.2206.01090 preprint EN cc-by arXiv (Cornell University) 2022-01-01

Understanding the entropy production of systems strongly coupled to thermal baths is a core problem both quantum thermodynamics and mesoscopic physics. While there exist many techniques accurately study in such systems, they typically require microscopic description baths, which can become numerically intractable for large systems. Alternatively an open-systems approach be employed with all nuances associated various levels approximation. Recently, leads has emerged as powerful method...

10.48550/arxiv.2312.12513 preprint EN cc-by arXiv (Cornell University) 2023-01-01
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