Universal quantum computation with quantum-dot cellular automata in dephasing-free subspace
Quantum Physics
2010-06-25 v2
Abstract
We investigate the possibility to have electron-pairs in dephasing-free subspace (DFS), by means of the quantum-dot cellular automata (QCA) and single-spin rotations, to carry out a high-fidelity and deterministic universal quantum computation. We show that our QCA device with electrons tunneling two dimensionally is very suitable for DFS encoding, and argue that our design favors a scalable quantum computation robust to collective dephasing errors.
Cite
@article{arxiv.0801.4617,
title = {Universal quantum computation with quantum-dot cellular automata in dephasing-free subspace},
author = {Z. Y. Xu and M. Feng and W. M. Zhang},
journal= {arXiv preprint arXiv:0801.4617},
year = {2010}
}
Comments
10 pages, 3 figures