  Dynamic polarization protocols aim to hyperpolarize a spin bath by
transferring spin polarization from a well-controlled qubit such as a quantum
dot or a color defect. Building on techniques from shortcuts to adiabaticity,
we design fast and efficient dynamic polarization protocols in central spin
models that apply to dipolarly interacting systems. The protocols maximize the
transfer of polarization via bright states at a nearby integrable point,
exploit the integrability-breaking terms to reduce the statistical weight on
dark states that do not transfer polarization, and realize experimentally
accessible local counterdiabatic driving through Floquet-engineering. A master
equation treatment suggests that the protocol duration scales linearly with the
number of bath spins with a prefactor that can be orders of magnitude smaller
than that of unassisted protocols. This work opens new pathways to cool spin
baths and extend qubit coherence times for applications in quantum information
processing and metrology.
