Beyond electronics, beyond optics: single circuit parallel computing with phonons

TL;DR

This paper introduces a novel phononic computing approach using the acoustic Faraday effect to perform parallel digital logic within a single circuit, leveraging phonons' wave nature for advanced information processing.

Contribution

It presents a new phononic computing paradigm based on phonon gyrators that act as generalized transistors, enabling parallel computation within a single circuit.

Findings

Demonstrates phonon gyrators as logic gates

Shows feasibility of parallel phononic circuits

Analyzes magneto-acoustic materials for implementation

Abstract

Phononic computing -- the use of (typically thermal) vibrations for information processing -- is a nascent technology; its capabilities are still being discovered. We analyze an alternative form of phononic computing inspired by optical, rather than electronic, computing. Using the acoustic Faraday effect, we design a phonon gyrator and thereby a means of performing computation through the manipulation of polarization in transverse phonon currents. Moreover, we establish that our gyrators act as generalized transistors and can construct digital logic gates. Exploiting the wave nature of phonons and the similarity of our logic gates, we demonstrate parallel computation within a single circuit, an effect presently unique to phonons. Finally, a generic method of designing these parallel circuits is introduced and used to analyze the feasibility of magneto-acoustic materials in realizing these circuits.