Candidate Source of Flux Noise in SQUIDs: Adsorbed Oxygen Molecules
Candidate Source of Flux Noise in SQUIDs: Adsorbed Oxygen Molecules
A major obstacle to using superconducting quantum interference devices (SQUIDs) as qubits is flux noise. We propose that the heretofore mysterious spins producing flux noise could be O_{2} molecules adsorbed on the surface. Using density functional theory calculations, we find that an O_{2} molecule adsorbed on an α-alumina surface has …