  The spin-orbit interaction in spin qubits enables spin-flip transitions,
resulting in Rabi oscillations when an external microwave field is resonant
with the qubit frequency. Here, we introduce an alternative driving mechanism
of hole spin qubits, where a far-detuned oscillating field couples to the qubit
phase. Phase driving at radio frequencies, orders of magnitude slower than the
microwave qubit frequency, induces highly non-trivial spin dynamics, violating
the Rabi resonance condition. By using a qubit integrated in a silicon fin
field-effect transistor (Si FinFET), we demonstrate a controllable suppression
of resonant Rabi oscillations, and their revivals at tunable sidebands. These
sidebands enable alternative qubit control schemes using global fields and
local far-detuned pulses, facilitating the design of dense large-scale qubit
architectures with local qubit addressability. Phase driving also decouples
Rabi oscillations from noise, an effect due to a gapped Floquet spectrum and
can enable Floquet engineering high-fidelity gates in future quantum
processors.
