4 papers
Origins of microwave losses in superconducting circuits made with silicon-on-insulator substrates
Simon Messelot, Nicolas Aparicio, Kazi Rafsanjani Amin +11
Silicon-on-insulator technology is widely used to fabricate silicon based devices, from advanced transistors to photonic circuits or nanomechanical systems. Integrating low loss su…
Coherence Limits in Interference-Based cos(2) Qubits
S. Messelot, A. Leblanc, J. -S. Tettekpoe +4
We investigate the coherence properties of parity-protected qubits based on interferences between two Josephson elements in a superconducting loop. We show that qubit i…
Gate-tunable Josephson parametric amplifiers based on semiconductor nanowires
Raphael Rousset-Zenou, Nicolas Aparicio, Simon Messelot +5
Superconductor-semiconductor hybrid materials have been extensively used for experiments on electrically tunable quantum devices. Notably, Josephson junctions utilizing nanowire we…
Gate-tunable spectrum and charge dispersion mitigation in a graphene superconducting qubit
Nicolas Aparicio, Simon Messelot, Edgar Bonet-Orozco +5
Controlling the energy spectrum of quantum-coherent superconducting circuits, i.e. the energies of excited states, the circuit anharmonicity and the states' charge dispersion, is e…