Document Type

Article

Original Publication Date

2008

Journal/Book/Conference Title

Journal of Applied Physics

Volume

103

Issue

10

DOI of Original Publication

10.1063/1.2937200

Comments

Originally published at http://dx.doi.org/10.1063/1.2937200

Date of Submission

November 2015

Abstract

The Toffoli–Fredkin (TF) gate is a universal reversible logic gate capable of performing logic operations without dissipating energy. Here, we show that a linear array of three quantum dots, each hosting a single electron, can realize the TF gate, if we encode logic bits in the spin polarization of the electrons and allow nearest neighbor exchange coupling. The dynamics of the TF gate is realized by selectively driving spin resonances in the coupled spin system with an acmagnetic field. The conditions for gate operation are established, and an estimate of the switching speed and gate error are provided.

Rights

Trivedi, A. R., and Bandyopadhyay, S. Single spin Toffoli-Fredkin logic gate. Journal of Applied Physics, 103, 104311 (2008). Copyright © 2008 American Institute of Physics.

Is Part Of

VCU Electrical and Computer Engineering Publications

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