This paper builds on the recent demonstration of three-wave mixing based phononic frequency comb. Here, in this process, an intrinsic coupling between the drive and resonant frequency leads to a frequency comb of spacing corresponding to the separation between drive and resonant frequency. Now, in this paper, we experimentally demonstrate the possibility to further excite multiple frequency combs with the same external drive through its coupling with other identical devices. In addition, we also experimentally identify interesting features associated with such a frequency comb generation process.
Cryogenic enhancement of phononic four-wave mixing in AlScN/SiC
Center for Integrated Nanotechnologies, Sandia National Laboratories（桑迪亚国家实验室集成纳米技术中心）；Microsystems Engineering, Science, and Applications, Sandia National Laboratories（桑迪亚国家实验室微系统工程、科学与应用）；Department of Electrical and Systems Engineering, University of Pennsylvania（宾夕法尼亚大学电气与系统工程系）；Electrical, Computer and Energy Engineering, University of Colorado, Boulder（科罗拉多大学博尔德分校电气、计算机与能源工程学院）
在声子学领域，周期性模式控制振动，从而控制物质中的热和声音的流动。在这种声子晶体中产生的带隙实现了低耗散振动模式，并实现了对机械量子比特、高效波导和最先进传感的应用。在这里，我们结合声子和二维材料，并探讨通过施加机械压力操纵声子晶体的可能性。为此，我们制造了最薄的声子晶体从单层石墨烯和模拟其振动特性。我们发现一个带隙的MHz制度，在此范围内，我们本地化的缺陷模式与一个小的有效质量为0.72 ag = 0.002 $m_{physical}$。最后，我们利用石墨烯的灵活性和机械调谐有限大小的声子晶体。在高达30千帕的静电压力下，我们观察到整个声子系统的频率上升超过350%。同时，缺陷模式保持在带隙内并保持局部化，这表明高质量、动态可调的机械系统。
Photonics Initiative, Advanced Science Research Center, City University of New York（纽约市立大学高级科学研究中心光子学倡议）；Gulliver, CNRS, ESPCI Paris, Université PSL（巴黎高等物理化工国立学院CNRS Gulliver实验室）；Laboratory of Wave Engineering, EPFL（洛桑联邦理工学院波工程实验室）；Faculty of Mechanical Engineering, Technion–Israel Institute of Technology（以色列理工学院机械工程学院）；University of Chicago, James Franck Institute（芝加哥大学詹姆斯·弗兰克研究所）；University of Chicago, Kadanoff Center for Theoretical Physics（芝加哥大学卡达诺夫理论物理中心）；Walker Department of Mechanical Engineering, The University of Texas at Austin（德克萨斯大学奥斯汀分校沃克机械工程系）；Physics Program, Graduate Center, City University of New York（纽约市立大学研究生院物理学项目）
Low-loss phononic integrated circuits based on a silicon nitride-lithium niobate platform
Bradley Department of Electric and Computer Engineering, Virginia Tech（弗吉尼亚理工大学电气与计算机工程布拉德利系）；Department of Electrical and Computer Engineering, University of Virginia（弗吉尼亚大学电气与计算机工程系）；Department of Physics and Center for Quantum Information Science and Engineering (VTQ), Virginia Tech（弗吉尼亚理工大学物理系及量子信息科学与工程中心）
A deep dive into Tollmien-Schlichting wave control via passive wall deformations: The battle between local and downstream stabilization, lessons learned, and implications for phononic subsurfaces
University at Buffalo (SUNY)（布法罗纽约州立大学）；Purdue University（普渡大学）
