Quasiparticle poisoning of superconducting qubits with active gamma irradiation

C. P. Larson, E. Yelton, K. Dodge +5

When a high-energy particle, such as a ${\hat{I}}^3$-ray or muon, impacts the substrate of a superconducting qubit chip, large numbers of electron-hole pairs and phonons are created. The en…