Comparison of hyperfine and Zeeman qubits published in PRA

Scattering errors

Is it worse to have leakage from the qubit manifold or sensitivity to magnetic field fluctuationss?  In the context of the surface code and ion qubits, the answer depends on the stability of the magnetic field.  For details see Brown and Brown, Phys. Rev. A 97, 052301 (2018)