Original Publication Date
Journal of Applied Physics
DOI of Original Publication
Date of Submission
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.
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