Session: 16-01-01: Government Agency Student Poster Competition

Paper Number: 150723

150723 - Unlocking the Potential of Phi-Bits: Advancing Quantum-Inspired Computing 

Phi-bits are the classical mechanical counterparts to qubits. They play a pivotal role in the development of quantum-inspired computing platforms. Phi-bits are acoustic waves in externally driven nonlinearly coupled arrays of waveguides. These phi-bits exhibit a remarkable ability to maintain coherent superpositions of states under external driving forces. In our system, three aluminum rods are coupled with epoxy in between them. Because of the presence of nonlinearity in the system, it is possible to visualize various frequency components other than the driving frequences. So, it is essential to understand the nonlinear processes governing the interaction and connectivity among phi-bits to further their progress. Manipulating the frequency, amplitude, and phase of external drivers allows precise control of the phi-bit states. To analyze and predict the nonlinear response of phi-bits to external stimuli, we have developed a discrete element model by imagining our three rod system into a mass spring system where the masses inside a rod are connected and masses of three different rod across the waveguide array are connected with a spring like phenomena which is epoxy in our system. This model effectively captures various types of nonlinearities like side spring and end spring nonlinearities stemming from the intrinsic medium coupling between waveguides and external factors like signal generators, transducers, and ultrasonic couplant assemblies respectively. Strengths and orders of nonlinearities are also factored into our research study. Because we discretize our three rod system with three chains of mass spring, damping in between the chain masses and across the chain masses are considered to unveil a nuanced understanding. Our study reveals critical insights, highlighting how nonlinearity and damping affect the complex amplitudes' modulus and phases in the coherent superposition of phi-bit states. Positive notable effect on phase predictability and stability can be seen at particularly high relative damping between rod masses itself and with considering end spring nonlinearity which might be stemming from honey we use as couplant. Our research paves the way for the advancement of phi-bit-based computing paradigms, offering insights into the optimization of control techniques and the mitigation of unwanted nonlinear effects. By harnessing the power of coherent superpositions in classical mechanical systems, we stand poised to unlock new frontiers in quantum-inspired information processing. From enhanced algorithmic performance to novel computational paradigms, the potential applications of phi-bit technology are vast and far-reaching. Through continued interdisciplinary collaboration and experimental validation, we aim to realize the full potential of phi-bits as a cornerstone of future quantum-analogue computing ecosystems.

[Funding: NSF grant # 2204382, 2204400, 2242925]

Presenting Author: Abrar Nur E Faiaz Wayne State University

Presenting Author Biography: I am a first year graduate student of Mechanical department of Wayne State University. My interest in research belongs to noise, vibration and classical physics.

Authors:

Abrar Nur E Faiaz Wayne State University
Akinsanmi S Ige University of Arizona
Kazi Tahsin Mahmood Wayne State University
M Afridi Hasan University of Arizona
M Arif Hasan Wayne State University
Pierre Deymier University of Arizona
Keith Runge University of Arizona
Josh Levine University of Arizona