When
Where
Speaker: Pierre A. Deymier, New Frontiers of Sound Science and technology Center, University of Arizona
Title: Harnessing topological acoustics for applications: Geometric phase computing, engineering and sensing
Abstract: The geometric phase associated with an acoustic field is a key concept in topological acoustics. This concept arises from the geometric representation of a field as a vector in a multidimensional complex Hilbert space. The topological characteristics of acoustic waves are revealed as unconventional features in the manifold spanned by the multidimensional acoustic field state vector as it is parametrically rotated. The rotation parameter may be associated with the wave attributes such as wave vector and subsequently frequency, but also physical properties of the supporting medium. The concept of geometric representation of acoustic fields can serve as a powerful platform for the interpretation and exploitation of a very broad range of topological acoustic phenomena for fundamental wave physics but also practical technologies. We present an overview of the New Frontiers of Sound Science and Technology Center research breakthroughs in the applications of geometric phase computing, sensing and engineering. These applications are emerging as approaches which broaden the range of technological applications of the notion of geometric phase and topological acoustics. More specifically, we report application of acoustic geometric phase computing to achieving classical scalable operations and algorithm analogous to those performed by quantum computers. The unique properties of topological acoustic waves are also shown to provide a path toward engineering devices, such as acoustic wave radio frequency filters used in telecommunications, with significantly improved performance metrics. Finally, we will present applications of the recently developed method of geometric phase sensing to ultrasonic nondestructive evaluation of engineered parts as well as seismic sensing in vulcanology and seismic environment sensing of the arctic.