Nanocryotron-driven Charge Configuration Memristor

TL;DR

This paper introduces a novel cryo-memory device combining superconducting nanowires and charge configuration memristors, promising ultrahigh energy efficiency and speed for cryo- and quantum computing applications.

Contribution

It presents a new non-volatile memory device integrating superconducting nanowires with charge-ordered state memristors, demonstrating potential for cryo- and quantum computing.

Findings

Device exhibits faithful dynamical response modeled by superconducting order parameter

Achieves ultrahigh energy efficiency and speed compatible with single flux quantum logic

Potential for use in cryo-computing and quantum computing peripherals

Abstract

Cryo-computing - both classical and quantum, is severely limited by the absence of a suitable cryo-memory. The challenge both in terms of energy efficiency and speed have been known for decades, but so far conventional technologies have not been able to deliver adequate performance. Here we present a novel non-volatile memory device which incorporates a superconducting nanowire and an all-electronic charge configuration memristor (CCM) based on switching between charge-ordered states in a layered dichalcogenide material. We investigate the time-dynamics and current-voltage characteristics of such a device fabricated using a NbTiN nanowire and a 1T-TaS2 CCM. The observed dynamical response of the device is faithfully reproduced by modelling of the superconducting order parameter showing versatility of application. The inherent ultrahigh energy efficiency and speed of the device, which is compatible with single flux quantum logic, leads to a promising new memory concept for use in cryo-computing and quantum computing peripheral devices.