Anomalous quality factor evolution of induced transparency in a virtualized coupled-oscillator system  

作　　者：Yunhan Yang Han Jia Tuo Liu Yuzhen Yang Jun Yang 

机构地区：[1]Key Laboratory of Noise and Vibration Research,Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]State Key Laboratory of Acoustics,Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2025年第1期144-151,共8页中国科学:物理学、力学、天文学(英文版)

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.12104480 and 12104383);the National Natural Science Foundation of Beijing(Grant No.L233037);the IACAS Frontier Exploration Project(Grant No.QYTS202110)。

摘　　要：The phenomenon of induced transparency,characterized by a high quality(Q)factor,holds significant importance in the fields of high-precision sensing,energy storage and wave manipulation.Conventional transparency systems are often constrained by the limited experimentally accessible parameter space and the lack of independent control over intrinsic parameters,thereby hindering advanced research on high-Q effects.Here we propose a virtualized coupled-oscillator system that enables reconfigurable induced transparency in the reflection spectrum.By virtually incorporating a pair of coupled oscillators into an individual acoustic meta-atom,we achieve the manipulation of induced transparency in a decoupled,wide-ranging,and elaborate manner.Exploiting the diverse evolutions across the intrinsic parameter space,we show experimentally a counter-intuitive increase in the Q-factor of the transparency window,which is attributed to the enhanced dissipation of the bright oscillator.Meanwhile,a constant group delay at the center frequency is observed accompanying this evolution.Our work demonstrates an intriguing platform as well as a novel strategy to engineer high-Q induced transparency phenomenon,and paves the way towards applications in programmable acoustic sensors,filters and slow-wave devices.

关 键 词：induced transparency acoustic meta-atom high quality-factor scattering programmable intrinsic parameter 

分 类 号：O441.3[理学—电磁学]