18 citations · 29 across the 10 of their papers we have counts for
11 papers
Plasmonic Modes in hybrid Josephson Junction Arrays
Alex Kirchner, Simon Feyrer, Vjeko Dimić +9
We present microwave characterization measurements of Josephson junction arrays (JJAs) based on epitaxial Al-InAs quantum well heterostructure. The Josephson inductance of the cons…
Time-optimal quantum gates with bang-bang control in multilevel systems
Valentín Reparaz, Santiago Ferreyra, María José Sánchez +2
We determine the optimal quantum manipulation protocols for implementing high-fidelity, fast single-qubit gates. We demonstrate that the time-optimal pulse sequence is a ``bang-ban…
Emergence of Bogoliubov Fermi Surfaces in hybrid Al/InAs heterostructures
S. Feyrer, V. Dimic, I. Lobato +15
We investigate the microwave electrodynamics of a proximitized two-dimensional electron gas in hybrid superconductor/semiconductor heterostructures. Using lumped-element resonators…
Optimizing LZSM protocol for high-fidelity gates in open-system fluxonium
Santiago Ferreyra, Valentın Reparaz, Maria Jose Sanchez +2
Quantum gates based on resonant Rabi oscillations are inherently slow for small-frequency qubits. They are also prone to errors due to counter-rotating terms. However, when the anh…
Giant anomalous Josephson effect as a probe of spin texture in topological insulators
Niklas Hüttner, Andreas Costa, Leandro Tosi +9
Surface states of topological insulators feature chiral spin-momentum locking. When such states are used as weak link between two superconductors, their spin texture gives rise to…
Microwave characterization of superconducting coplanar resonators made out of granular aluminium
Kelvin J. Ramos, Ivana Curci, Erick Potosí +4
We have designed, fabricated and characterized microwave resonators made out of thin films of granular aluminium (grAl) with different oxygen content. We extract the contribution o…
Antichiral edge states and Bogoliubov Fermi surfaces in a two-dimensional proximity-induced superconductor
Gabriel F. Rodríguez Ruiz, Juan Herrera Mateos, Leandro Tosi +3
We show that a magnetic field parallel to the plane of a two-dimensional electron gas with Rashba spin orbit coupling in proximity to a superconductor leads to a topological phase…
Landau-Zener-Stückelberg spectroscopy of a fluxonium quantum circuit
Valentín Reparaz, María José Sánchez, Maximiliano Gatto +2
In this work, we study the time-averaged populations obtained for a fluxonium circuit under a large amplitude nonresonant periodic drive. We present numerical simulations of the ti…
Nonlocal thermoelectricity in quantum wires as a signature of Bogoliubov-Fermi points
Juan Herrera Mateos, Leandro Tosi, Alessandro Braggio +2
We study nonlocal thermoelectricity in a superconducting wire subject to spin-orbit coupling and a magnetic field with a relative orientation between them. We calculate the cur…
Quantum circuits with multiterminal Josephson-Andreev junctions
F. J. Matute-Cañadas, L. Tosi, A. Levy Yeyati
We explore superconducting quantum circuits where several leads are simultaneously connected beyond the tunneling regime, such that the fermionic structure of Andreev bound states…
Effects of the measurement power on states discrimination and dynamics in a circuit-QED experiment
L. Tosi, I. Lobato, M. F. Goffman +3
We explore the effects of driving a cavity at a large photon number in a circuit-QED experiment where the ``matter-like'' part corresponds to an unique Andreev level in a supercond…