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Superconducting coplanar waveguide resonators that can operate in strongmagnetic fields are important tools for a variety of high frequencysuperconducting devices. Magnetic fields degrade resonator performance bycreating Abrikosov vortices that cause resistive losses and frequencyfluctuations, or suppressing superconductivity entirely. To mitigate theseeffects we investigate lithographically defined artificial defects inresonators fabricated from NbTiN superconducting films. We show that bycontrolling the vortex dynamics the quality factor of resonators inperpendicular magnetic fields can be greatly enhanced. Coupled with therestriction of the device geometry to enhance the superconductors criticalfield, we demonstrate stable resonances that retain quality factors $\simeq10^5$ at the single photon power level in perpendicular magnetic fields up to$B_\perp \simeq$ 20 mT and parallel magnetic fields up to $B_\parallel \simeq$6 T. We demonstrate the effectiveness of this technique for hybrid systems byintegrating an InSb nanowire into a field resilient superconducting resonator,and use it to perform fast charge readout of a gate defined double quantum dotat $B_\parallel =$ 1 T.

Magnetic field resilient superconducting coplanar waveguide resonators for hybrid cQED experiments