I. Introduction
Optical control of atomic motion is traditionally accomplished by weakly dressing atoms in their ground-state manifolds, such as laser cooling, atom interferometry, and ion-based quantum information processing[1–7]. The long coherence time associated with the weakly dressed ground states makes it possible to precisely control the dynamics using modulated CW lasers, typically through acousto-optical modulation (AOM) with a megahertz (MHz)-level bandwidth[8]. On the other hand, full control of the strong-transition dynamics between ground and excited states becomes an emergent scenario, with many applications in atomic and quantum optics, such as for ultrafast optical acceleration of spinnor mattterwave[9–13], precise control of light-assisted interactions[14,15], and to access subradiant physics[16–18]. Since strong transitions have coherence time radiatively limited to tens of nanoseconds, their full and coherent control requires optical waveforms with modulation bandwidth at the gigahertz (GHz) level beyond standard CW modulation technology. Although ultrafast pulses can have bandwidth beyond terahertz (THz), the pulse spectral brightness is usually too weak to efficiently drive the narrow transitions[19–21].