Temperature Effect on the Operation of Elementary Quantum-Dot Spin Gates by the Example of the NOT-AND Gate
Strongly Correlated Electrons
2007-05-23 v1
Abstract
The effect of temperature on the operation of the elementary quantum-dot spin gates for single-electron computing is studied theoretically within the framework of the Hubbard model by the example of the NOT-AND gate. The calculated values of the uniform external magnetic field necessary to realize the whole truth table proved to be unreasonably high for the implementation of the NOT-AND logical function even at the liquid helium temperature. This result appears to be common to all spin gates. Thus, finite temperatures seem to be a serious obstacle for the practical realization of ground state calculations in quantum dot spin gates.
Keywords
Cite
@article{arxiv.cond-mat/9810346,
title = {Temperature Effect on the Operation of Elementary Quantum-Dot Spin Gates by the Example of the NOT-AND Gate},
author = {A. V. Krasheninnikov and R. A. Koltsov},
journal= {arXiv preprint arXiv:cond-mat/9810346},
year = {2007}
}
Comments
5 eps figures