Juan Carlos Cuevas
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View article: Finite length effects and Coulomb interaction in Josephson junctions based on Ge quantum wells and probed with microwave spectroscopy
Finite length effects and Coulomb interaction in Josephson junctions based on Ge quantum wells and probed with microwave spectroscopy Open
Proximitized Ge quantum wells have emerged as a novel platform for studying Andreev bound states (ABSs), due to their expected strong spin-orbit interaction and high mobility. Here, we used microwave spectroscopy techniques to investigate …
View article: Finite-length effects and Coulomb interaction in Josephson junctions based on Ge quantum wells and probed with microwave spectroscopy
Finite-length effects and Coulomb interaction in Josephson junctions based on Ge quantum wells and probed with microwave spectroscopy Open
Proximitized Ge quantum wells have emerged as a platform for studying Andreev bound states (ABSs) due to their expected strong spin-orbit interaction and high mobility. Here, we used microwave spectroscopy techniques to investigate ABSs …
View article: Nonclassical photon-assisted transport in superconducting tunnel junctions
Nonclassical photon-assisted transport in superconducting tunnel junctions Open
Advances in circuit quantum electrodynamics have enabled the generation of arbitrary nonclassical microwave states, enabling progress in physics. Here, we present a theoretical study of the electrical current in a Josephson tunnel junction…
View article: Signatures of superconducting Higgs mode in irradiated Josephson junctions
Signatures of superconducting Higgs mode in irradiated Josephson junctions Open
The Higgs mode, originally proposed in the context of superconductivity, corresponds to oscillations of the amplitude of the superconducting order parameter. Recent THz-domain optical studies have found signatures consistent with the Higgs…
View article: Exploring the Energy Spectrum of a Four-Terminal Josephson Junction: Toward Topological Andreev Band Structures
Exploring the Energy Spectrum of a Four-Terminal Josephson Junction: Toward Topological Andreev Band Structures Open
Hybrid multiterminal Josephson junctions (JJs) are expected to harbor a novel class of Andreev bound states (ABSs), including topologically nontrivial states in four-terminal devices. In these systems, topological phases emerge when ABSs d…
View article: Heat transfer in metallic nanometre-sized gaps
Heat transfer in metallic nanometre-sized gaps Open
Heat transfer in nanoscale gaps is of key relevance for a variety of technologies. Recent experiments have reported contradictory results shedding doubts about the fundamental mechanisms for heat exchange when bodies are separated by nanom…
View article: Sextets in four-terminal Josephson junctions
Sextets in four-terminal Josephson junctions Open
Multiterminal superconducting junctions have revitalized the investigation of the Josephson effect. One of the most interesting aspects of these hybrid systems is the occurrence of multi-Cooper pair tunneling processes that have no analog …
View article: Investigating radiation heat transfer from the cone calorimeter heater: A new view factor model and uncertainty quantification
Investigating radiation heat transfer from the cone calorimeter heater: A new view factor model and uncertainty quantification Open
View article: Thermodynamic uncertainty relations in superconducting junctions
Thermodynamic uncertainty relations in superconducting junctions Open
It has recently been predicted that the thermodynamic uncertainty relation (TUR), which expresses a trade-off between the amount of dissipation and the absence of fluctuations, can be violated in the context of charge transport in normal q…
View article: Exploring the energy spectrum of a four-terminal Josephson junction: Towards topological Andreev band structures
Exploring the energy spectrum of a four-terminal Josephson junction: Towards topological Andreev band structures Open
Hybrid multiterminal Josephson junctions (JJs) are expected to harbor a novel class of Andreev bound states (ABSs), including topologically nontrivial states in four-terminal devices. In these systems, topological phases emerge when ABSs d…
View article: Investigating Radiation Heat Transfer from the Cone Calorimeter Heater: A New View Factor Model and Uncertainty Quantification
Investigating Radiation Heat Transfer from the Cone Calorimeter Heater: A New View Factor Model and Uncertainty Quantification Open
View article: Multiband Josephson effect in an atomic scale Pb tunnel junction
Multiband Josephson effect in an atomic scale Pb tunnel junction Open
Multiband superconductivity plays an important role in many emergent novel superconductors and has attracted great interest over the years. Various related experimental aspects have been intensely researched, but a quantitative understandi…
View article: Deep Reinforcement Learning for Radiative Heat Transfer Optimization Problems
Deep Reinforcement Learning for Radiative Heat Transfer Optimization Problems Open
Reinforcement learning is a subfield of machine learning that is having a huge impact in the different conventional disciplines, including physical sciences. Here, we show how reinforcement learning methods can be applied to solve optimiza…
View article: Thermodynamic uncertainty relations in superconducting junctions
Thermodynamic uncertainty relations in superconducting junctions Open
Quantum conductors attached to metallic reservoirs have been demonstrated to overcome the thermodynamic uncertainty relation (TUR), a trade-off relation between the amount of dissipation and the absence of charge and heat current fluctuati…
View article: Heat Transfer in Metallic Nanometre-Sized Gaps
Heat Transfer in Metallic Nanometre-Sized Gaps Open
Heat transfer in nanoscale gaps is of key relevance for a variety of technologies. Recent experiments have reported contradictory results shedding doubts about the fundamental mechanisms for heat exchange when bodies are separated by nanom…
View article: Decentralized EV charging and discharging scheduling algorithm based on Type-II fuzzy-logic controllers
Decentralized EV charging and discharging scheduling algorithm based on Type-II fuzzy-logic controllers Open
Electric vehicles suppose a new paradigm in mobility and a challenge for today electric grids because its number increases day by day. Therefore, it is of paramount importance to keep the electric grid stable to allow an efficient charging…
View article: Theory of electron spin resonance in scanning tunneling microscopy
Theory of electron spin resonance in scanning tunneling microscopy Open
Electron spin resonance (ESR) spectroscopy in scanning tunneling microscopy (STM) has enabled probing the electronic structure of single magnetic atoms and molecules on surfaces with unprecedented energy resolution, as well as demonstratin…
View article: Theory of Electron Spin Resonance in Scanning Tunneling Microscopy
Theory of Electron Spin Resonance in Scanning Tunneling Microscopy Open
Electron spin resonance (ESR) spectroscopy in scanning tunneling microscopy (STM) has enabled probing the electronic structure of single magnetic atoms and molecules on surfaces with unprecedented energy resolution, as well as demonstratin…
View article: Flux-Tunable Josephson Diode Effect in a Hybrid Four-Terminal Josephson Junction
Flux-Tunable Josephson Diode Effect in a Hybrid Four-Terminal Josephson Junction Open
We investigate the direction-dependent switching current in a flux-tunable four-terminal Josephson junction defined in an InAs/Al two-dimensional heterostructure. The device exhibits the Josephson diode effect with switching currents that …
View article: Generative adversarial networks for data-scarce radiative heat transfer applications
Generative adversarial networks for data-scarce radiative heat transfer applications Open
Generative adversarial networks (GANs) are one of the most robust and versatile techniques in the field of generative artificial intelligence. In this work, we report on an application of GANs in the domain of synthetic spectral data gener…
View article: Shaping Graphene Superconductivity with Nanometer Precision
Shaping Graphene Superconductivity with Nanometer Precision Open
Graphene holds great potential for superconductivity due to its pure 2D nature, the ability to tune its carrier density through electrostatic gating, and its unique, relativistic‐like electronic properties. At present, still far from contr…
View article: Flux-Tunable Josephson Diode Effect in a Hybrid Four-Terminal Josephson Junction
Flux-Tunable Josephson Diode Effect in a Hybrid Four-Terminal Josephson Junction Open
We investigate the direction-dependent switching current in a flux-tunable four-terminal Josephson junction defined in an InAs/Al two-dimensional heterostructure. The device exhibits the Josephson diode effect, with switching currents that…
View article: Efficient Electron Hopping Transport through Azurin-Based Junctions
Efficient Electron Hopping Transport through Azurin-Based Junctions Open
We conducted a theoretical study of electron transport through junctions of the blue-copper azurin from Pseudomonas aeruginosa. We found that single-site hopping can lead to either higher or lower current values compared to fully co…
View article: Quartet Tomography in Multiterminal Josephson Junctions
Quartet Tomography in Multiterminal Josephson Junctions Open
We investigate the detection of quartets in hybrid multiterminal Josephson junctions. Using simple models of quantum dots coupled to superconducting leads, we find that quartets are ubiquitous and show how to rigorously extract their contr…
View article: Outcomes of male patients with HR+/HER2– advanced breast cancer receiving palbociclib in the real-world POLARIS study
Outcomes of male patients with HR+/HER2– advanced breast cancer receiving palbociclib in the real-world POLARIS study Open
Purpose Data on treatments for male breast cancer patients are limited owing to rarity and underrepresentation in clinical trials. The real-world POLARIS study gathers data on palbociclib use for the treatment of hormone receptor–positive/…
View article: Microwave-induced conductance replicas in hybrid Josephson junctions without Floquet—Andreev states
Microwave-induced conductance replicas in hybrid Josephson junctions without Floquet—Andreev states Open
Light–matter coupling allows control and engineering of complex quantum states. Here we investigate a hybrid superconducting–semiconducting Josephson junction subject to microwave irradiation by means of tunnelling spectroscopy of the Andr…
View article: Microwave-induced conductance replicas in hybrid Josephson junctions without Floquet—Andreev states
Microwave-induced conductance replicas in hybrid Josephson junctions without Floquet—Andreev states Open
Light-matter interaction enables engineering of non-equilibrium quantum systems. In condensed matter, spatially and temporally cyclic Hamiltonians are expected to generate energy-periodic Floquet states, with properties inaccessible at the…
View article: Microwave excitation of atomic scale superconducting bound states
Microwave excitation of atomic scale superconducting bound states Open
View article: Phase-engineering the Andreev band structure of a three-terminal Josephson junction
Phase-engineering the Andreev band structure of a three-terminal Josephson junction Open
In hybrid Josephson junctions with three or more superconducting terminals coupled to a semiconducting region, Andreev bound states may form unconventional energy band structures, or Andreev matter, which are engineered by controlling supe…
View article: DC Josephson effect between two Yu-Shiba-Rusinov bound states
DC Josephson effect between two Yu-Shiba-Rusinov bound states Open
Motivated by recent experiments [Nat. Phys. $\\textbf{16}$, 1227 (2020)], we\npresent here a theoretical study of the DC Josephson effect in a system\ncomprising two magnetic impurities coupled to their respective superconducting\nelectrod…