标题： 可扩展的光子-声子集成电路用于可重构信号处理 显示英文标题

标题： Scalable photonic-phonoinc integrated circuitry for reconfigurable signal processing

摘要： 光子和声子之间的相互作用在从光学光源和调制器到量子转换和计量学的广泛领域中起着关键作用。 通过使用集成光子-声子器件，性能可以进一步提高，有望增强相互作用强度和大规模集成。 虽然增强的相互作用已被广泛证明，但由于材料限制，实现大规模集成的光子-声子电路仍然具有挑战性。 在此，我们通过使用氮化镓在蓝宝石上的结构解决了这一关键问题，以实现可扩展的光子-声子集成电路。 光学和声学场在亚波长尺度内被限制，而无需悬空结构。 这使我们能够同时实现光学和声学场的有效激发、灵活路由和可重构处理。 通过受控的光子-声子相互作用和强压电效应，我们进一步展示了通过声学介导的频分复用射频和光学信号之间的可重构转换。 这项工作为实现光子-声子混合系统的最终性能提供了理想的平台，具有高效率、多功能和大可扩展性。 显示英文摘要

摘要： The interaction between photons and phonons plays a crucial role in broad areas ranging from optical sources and modulators to quantum transduction and metrology. The performance can be further improved using integrated photonic-phononic devices, promising enhanced interaction strength and large-scale integration. While the enhanced interaction has been widely demonstrated, it is challenging to realize large-scale integrated photonic-phononic circuits due to material limitations. Here, we resolve this critical issue by using gallium nitride on sapphire for scalable photonicphononic integrated circuits. Both optical and acoustic fields are confined in sub-wavelength scales without suspended structures. This enables us to achieve the efficient launching, flexible routing, and reconfigruable processing of optical and acoustic fields simultaneously. With the controlled photonic-phononic interaction and strong piezoelectric effect, we further demonstrate the reconfigurable conversion between frequency-multiplexed RF and optical signals mediated by acoustics. This work provides an ideal platform for achieving ultimate performance of photonic-phononic hybrid systems with high efficiency, multiple functions, and large scalability.