SiQAD: A Design and Simulation Tool for Atomic Silicon Quantum Dot Circuits

TL;DR

SiQAD is a comprehensive design and simulation platform that facilitates the development of atomic silicon quantum dot circuits, supporting various simulation tools and enabling the creation of new logic gates and clocked wires.

Contribution

This work introduces SiQAD, a novel integrated design and simulation tool specifically for atomic silicon quantum dot circuits, including new logic gate designs and dynamic behavior analysis.

Findings

Simulations align with experimental results for electron behavior.

New logic gates for atomic silicon quantum dots have been designed.

A clocked wire demonstration showcases dynamic circuit capabilities.

Abstract

This paper introduces SiQAD, a computer-aided design tool enabling the rapid design and simulation of atomic silicon dangling bond quantum dot patterns capable of computational logic. Several simulation tools are included, each able to inform the designer on various aspects of their designs: a ground-state electron configuration finder, a non-equilibrium electron dynamics simulator, and an electric potential landscape solver with clocking electrode support. Simulations have been compared against past experimental results to inform the electron population estimation and dynamic behavior. New logic gates suitable for this platform have been designed and simulated, and a clocked wire has been demonstrated. This work paves the way for the exploration of the vast and fertile design space of atomic silicon dangling bond quantum dot circuits.