Long-Time Memory and Ternary Logic Gate Using a Multistable Cavity Magnonic System

TL;DR

This paper demonstrates tristability in a cavity magnonic system with Kerr nonlinearity, enabling long-term memory storage and ternary logic operations, advancing cavity magnonics for information processing.

Contribution

The first experimental realization of tristability in a three-mode cavity magnonic system with Kerr nonlinearity, enabling long memory and ternary logic gates.

Findings

Memory time up to 5.11 seconds achieved.

Successful implementation of ternary logic gate.

System exhibits history-dependent stable states.

Abstract

Multistability is an extraordinary nonlinear property of dynamical systems and can be explored to implement memory and switches. Here we experimentally realize the tristability in a three-mode cavity magnonic system with Kerr nonlinearity. The three stable states in the tristable region correspond to the stable solutions of the frequency shift of the cavity magnon polariton under specific driving conditions. We find that the system staying in which stable state depends on the history experienced by the system, and this state can be harnessed to store the history information. In our experiment, the memory time can reach as long as 5.11 s. Moreover, we demonstrate the ternary logic gate with good on-off characteristics using this multistable hybrid system. Our new findings pave a way towards cavity magnonics-based information storage and processing.