  Hybrid spin-optomechanical quantum systems offer high flexibility,
integrability and applicability for quantum science and technology.
Particularly, on-chip surface acoustic waves (SAWs) can efficiently drive spin
transitions in the ground states (GSs) of atomic-scale, color centre qubits,
which are forbidden in case of the more frequently used electromagnetic fields.
Here, we demonstrate that strain-induced spin interactions within their
optically excited state (ES) can exceed by two orders of magnitude the ones
within the GS. This gives rise to novel physical phenomena, such as the
acoustically induced coherent spin trapping (CST) unvealed here. The CST
manifests itself as the spin preservation along one particular direction under
the coherent drive of the GS and ES by the same acoustic field. Our findings
provide new opportunities for the coherent control of spin qubits with
dynamically generated strain fields that can lead towards the realization of
future spin-acoustic quantum devices.
