5 papers
FerBo: a noise resilient qubit hybridizing Andreev and fluxonium states
J. J. Caceres, D. Sanz Marco, J. Ortuzar +6
We propose a novel superconducting quantum circuit that should be robust against both relaxation and dephasing over a wide and experimentally accessible parameter range. The circui…
Ultrastrong Coupling and Coherent Dynamics in a Gate-Tunable Transmon Qubit
I. Casal Iglesias, F. J. Matute-Cañadas, G. O. Steffensen +10
Ultrastrong light-matter coupling (USC) gives access to exotic quantum phenomena and promises faster quantum gates, yet coherent time-domain control in this regime remains largely…
Fluxoid valve effect in full-shell nanowire Josephson junctions
Carlos Payá, F. J. Matute-Cañadas, A. Levy Yeyati +3
We introduce a new type of supercurrent valve based on full-shell nanowires. These hybrid wires consist of a semiconductor core fully wrapped in a thin superconductor shell and sub…
Effect of quasiparticles on the parameters of a gap-engineered transmon
Daniil S. Antonenko, Pavel D. Kurilovich, Francisco J. Matute-Cañadas +1
We evaluate the quasiparticle contribution to the frequency shift and relaxation rates of a transmon with the Josephson junctions connecting superconductors that have unequal energ…
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…