标题： 一种可调宽带高Q声学谐振器的受量子启发设计 显示英文标题

标题： Quantum-inspired design of a tunable broadband high-Q acoustic resonator

摘要： 高品因数(Q)的谐振器是许多先进技术中的关键组件，包括能量收集、化学和生物传感以及二次谐波生成。 许多应用还需要在宽频率范围内实现谐振。 然而，单腔谐振器在带宽和品因数之间面临基本的权衡。 在此，我们提出了一种声学谐振器，它通过借鉴扭曲范德瓦尔斯异质结构中观察到的简谐振子态的阶梯结构来克服这一限制。 通过模拟扭曲双层石墨烯的声学类比，我们发现了一种可调的声学共振阶梯，其Q值高达4,000。 这些共振之间的间隔小至10赫兹，并在高达1千赫兹的带宽内持续存在，形成一种有效的高Q、宽带系统。 我们的方法为克服传统谐振器中的固有权衡提供了一条有前景的途径，并为先进的高Q声学器件铺平了道路。 显示英文摘要

摘要： Resonators with a high quality factor (Q) are crucial components in a wide range of advanced technologies, including energy harvesting, chemical and biological sensing, and second-harmonic generation. Many applications also require resonance across a broad frequency range. However, single-cavity resonators face a fundamental trade-off between bandwidth and quality factor. Here we propose an acoustic resonator that overcomes this limitation by drawing inspiration from the ladder of harmonic oscillator states observed in twisted van der Waals heterostructures. By simulating an acoustic analog of twisted bilayer graphene, we discover a tunable ladder of acoustic resonances with Q as high as 4,000. These resonances are separated by as little as 10 Hz and persist over a bandwidth as broad as 1 kHz, forming an effective high-Q, broadband system. Our approach offers a promising pathway to overcome the inherent trade-offs in traditional resonators and paves the way for advanced high-Q acoustic devices.