A novel implementation of a charge based quantum computer is proposed. There is no charge transfer during calculation, therefore, uncontrollable entanglement between qubits due to long-range Coulomb forces is suppressed. High-speed computation with 1ps per an operation looks as feasible.
@article{arxiv.quant-ph/0009099,
title = {Charge based quantum computer without charge transfer},
author = {V. V'yurkov and L. Y. Gorelik},
journal= {arXiv preprint arXiv:quant-ph/0009099},
year = {2007}
}