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20242026
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physics.app-ph2026

Resonance-enhanced integrated acousto-optic beam steering

Yue Yu, Qixuan Lin, Shucheng Fang +8

Optical beam steering is a key technology for free-space optical communication, sensing, and imaging. Mechanical beam steering systems suffer from limited scanning speed and bulky…

physics.app-ph2026

Low-loss phononic integrated circuits based on a silicon nitride-lithium niobate platform

Jun Ji, Joseph G Thomas, Zichen Xi +7

Microwave-frequency acoustic waves in solids have emerged as a versatile platform for both classical and quantum applications. While phononic integrated devices and circuits are be…

physics.app-ph2025

Injection locking of GHz-frequency surface acoustic wave phononic crystal oscillator

Zichen Xi, Hsuan-Hao Lu, Jun Ji +4

Low-noise gigahertz (GHz) frequencies sources are essential for applications in signal processing, sensing, and telecommunications. Surface acoustic wave (SAW) resonator-based osci…

physics.app-ph2025

Low-phase-noise surface-acoustic-wave oscillator using an edge mode of a phononic band gap

Zichen Xi, Joseph G. Thomas, Jun Ji +7

Low-phase-noise microwave-frequency integrated oscillators provide compact solutions for various applications in signal processing, communications, and sensing. Surface acoustic wa…

physics.app-ph2024

Frequency-domain Parallel Computing Using Single On-Chip Nonlinear Acoustic-wave Device

Jun Ji, Zichen Xi, Bernadeta R. Srijanto +4

Multiply-accumulation (MAC) is a crucial computing operation in signal processing, numerical simulations, and machine learning. This work presents a scalable, programmable, frequen…