Energy dynamics, heat production and heat–work conversion with qubits: toward the development of quantum machines

L Arrachea - Reports on Progress in Physics, 2023 - iopscience.iop.org
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 …

Electromigration and the structure of metallic nanocontacts

R Hoffmann-Vogel - Applied Physics Reviews, 2017 - pubs.aip.org
This article reviews efforts to structurally characterize metallic nanocontacts. While the
electronic characterization of such junctions is relatively straight forward, usually it is …

Geometric optimization of nonequilibrium adiabatic thermal machines and implementation in a qubit system

P Terren Alonso, P Abiuso, M Perarnau-Llobet… - PRX Quantum, 2022 - APS
We adopt a geometric approach to describe the performance of adiabatic quantum
machines, operating under slow time-dependent driving and in contact with two reservoirs …

Geometric properties of adiabatic quantum thermal machines

B Bhandari, PT Alonso, F Taddei, F Von Oppen… - Physical Review B, 2020 - APS
We present a general unified approach for the study of quantum thermal machines,
including both heat engines and refrigerators, operating under periodic adiabatic driving …

Semi-classical generalized Langevin equation for equilibrium and nonequilibrium molecular dynamics simulation

JT Lü, BZ Hu, P Hedegård, M Brandbyge - Progress in Surface Science, 2019 - Elsevier
Molecular dynamics (MD) simulation based on Langevin equation has been widely used in
the study of structural, thermal properties of matter in different phases. Normally, the atomic …

From nonequilibrium Green's functions to quantum master equations for the density matrix and out-of-time-order correlators: Steady-state and adiabatic dynamics

B Bhandari, R Fazio, F Taddei, L Arrachea - Physical Review B, 2021 - APS
We consider a finite quantum system under slow driving and weakly coupled to thermal
reservoirs at different temperatures. We present a systematic derivation of the quantum …

Enhanced energy harvesting near exceptional points in systems with (pseudo-) PT-symmetry

LJ Fernández-Alcázar, R Kononchuk… - Communications …, 2021 - nature.com
Exceptional point degeneracies, occurring in non-Hermitian systems, have challenged many
well established concepts and led to the development of remarkable technologies. Here, we …

Nanomagnet coupled to quantum spin Hall edge: An adiabatic quantum motor

L Arrachea, F Von Oppen - Physica E: Low-dimensional Systems and …, 2015 - Elsevier
The precessing magnetization of a magnetic islands coupled to a quantum spin Hall edge
pumps charge along the edge. Conversely, a bias voltage applied to the edge makes the …

Role of coherence in quantum-dot-based nanomachines within the Coulomb blockade regime

FD Ribetto, RA Bustos-Marún, HL Calvo - Physical Review B, 2021 - APS
During the last decades, quantum dots within the Coulomb blockade regime of transport
have been proposed as essential building blocks for a wide variety of nanomachines. This …

Thermodynamics and steady state of quantum motors and pumps far from equilibrium

RA Bustos-Marún, HL Calvo - Entropy, 2019 - mdpi.com
In this article, we briefly review the dynamical and thermodynamical aspects of different
forms of quantum motors and quantum pumps. We then extend previous results to provide …