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<p>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.</p>

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Coherent control of transient acoustic wave under programmable Bloch dynamics

  • 期刊论文

  • 发表日期：

    2026年1月4日

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  • Xiaomeng Zhang,
  • Guangchen He,
  • Zhaoxian Chen,
  • Zeguo Chen,
  • Minghui Lu,
  • Yanfeng Chen

摘要

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.