Coherent control of transient acoustic wave under programmable Bloch dynamics

For decades, efforts to shape acoustic waves focused on fixed metamaterials and static phase masks, leaving their internal state evolution largely untouchable. Here, we introduce an all-classical platform that unlocks real-time, Bloch sphere control of an acoustic two-level system, bringing the full arsenal of quantum-style coherent protocols to the realm of sound. Using a programmable electro-acoustic architecture, we implement independent and synchronized modulation of onsite detuning, coupling strength, and dissipation—enabling full Bloch-sphere trajectory steering. On this basis, we realize quantum-inspired control protocols including Rabi oscillations, Ramsey interference, Floquet modulation, and spin echo sequences, tracking amplitude and phase evolution of acoustic states in real time. Our approach establishes a new paradigm for wave-based control, bridging classical acoustics with quantum coherent protocols, and opens new opportunities for programmable sound field engineering, information storage, and analog simulation of gauge field dynamics.