Quantum dynamics for energetic advantage in a charge-based classical full-adder
Abstract
We present a proposal for a one-bit full-adder to process classical information based on the quantum reversible dynamics of a triple quantum dot system. The device works via the repeated execution of a Fredkin gate implemented through the dynamics of a single time-independent Hamiltonian. Our proposal uses realistic parameter values and could be implemented on currently available quantum dot architectures. We compare the estimated energy requirements for operating our full-adder with those of well-known fully classical devices, and argue that our proposal may provide a consistently better energy efficiency. Our work serves as a proof of principle for the development of energy-efficient information technologies operating through coherent quantum dynamics.
Cite
@article{arxiv.2206.14241,
title = {Quantum dynamics for energetic advantage in a charge-based classical full-adder},
author = {João P. Moutinho and Marco Pezzutto and Sagar Pratapsi and Francisco Ferreira da Silva and Silvano De Franceschi and Sougato Bose and António T. Costa and Yasser Omar},
journal= {arXiv preprint arXiv:2206.14241},
year = {2023}
}
Comments
V2: Minor updates. -- Keywords: energy-efficient computing, quantum dynamics, quantum gates, semiconductor quantum dots, quantum technologies