Publications
Showing 124 results for Author: Gonzalo Alvarez
Aug, 2026
Journal
Edge Reconstruction in a Quantum Spin Hall Insulator
We study interaction-driven edge reconstruction in a quantum spin Hall insulator described by the Bernevig-Hughes-Zhang model with Kanamori-Hubbard interactions using the real-space density matrix renormalization group method in both the grand-canonical and canonical ensembles. For a two-dimensional cylinder with a smooth edge, we identify discrete particle-number transiti…
Jun, 2026
Journal
Intertwined charge, spin, and orbital degrees of freedom under electronic correlations in the one-dimensional Fe3+ chalcogenide chain
Motivated by recent developments in the study of quasi-one-dimensional iron systems with Fe2+, we comprehensively study an Fe3+ chalcogenide chain system. Based on first-principles calculations, the Fe3+ chain has a similar electronic structure to that discussed before for the Fe2+ chain, because of the similar Fe𝑋4 (𝑋=S or Se) tetrahedron-chain geometry. Furthermore, a t…
Nov, 2025
Journal
Spinon excitations and spin correlations in the one-dimensional quantum magnet β-VOSO4 probed by Raman spectroscopy
Fractionalized excitations such as spinons and anyons have emerged as a central theme in condensed matter physics with broad implications for superconductivity, quantum statistics, and quantum computation. The nearly ideal one-dimensional S = 1/2 system β-VOSO4 without long-range order down to 85 mK provides a promising platform to experimentally explore such fractionalize…
Sep, 2025
Journal
Diabatic error and propagation of Majorana zero modes in interacting quantum dots systems
Motivated by recent experimental progress in realizing Majorana zero modes (MZMs) using quantum dot systems, we investigate the diabatic errors associated with the movement of those MZMs. The movement is achieved by tuning time-dependent gate potentials applied to individual quantum dots, effectively creating a moving potential wall. To probe the optimized movement of MZMs…
Aug, 2025
Journal
Robustness of Vacancy-Bound Non-Abelian Anyons in the Kitaev Model in a Magnetic Field
Non-Abelian anyons in quantum spin liquids (QSLs) provide a promising route to fault-tolerant topological quantum computation. In the exactly solvable Kitaev honeycomb model, such anyons of the QSL state can be bound to nonmagnetic spin vacancies and endowed with non-Abelian statistics by an infinitesimal magnetic field. Here, we investigate how this approach for stabilizi…
Aug, 2025
Journal
Beyond-classical computation in quantum simulation
Quantum computers hold the promise of solving certain problems that lie beyond the reach of conventional computers. However, establishing this capability, especially for impactful and meaningful problems, remains a central challenge. Here, we show that superconducting quantum annealing processors can rapidly generate samples in close agreement with solutions of the Schrödi…