Hydrogen as a Source of Magnetic Flux Noise in Superconducting Quantum Devices

Published: Sep 19, 2017
Abstract
Superconducting qubits are hampered by flux noise produced by surface spins from a number of sources. Recent experiments indicated that hydrogen (H) atoms may be one of the sources. Using density functional theory calculations, we report that H atoms either embedded in or adsorbed on an {\alpha}-Al2O3(0001) surface have sizeable spin moments ranging from 0.81 to 0.87 {\mu}B with extremely shallow energy barriers for spin reorientation as low as...
Paper Details
Title
Hydrogen as a Source of Magnetic Flux Noise in Superconducting Quantum Devices
Published Date
Sep 19, 2017
Journal
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