We present Monte Carlo wavefunction simulations for quantum computations employing an exchange-coupled array of quantum dots. Employing a combination of experimentally and theoretically available parameters, we find that gate fidelities greater than 98 % may be obtained with current experimental and technological capabilities. Application to an encoded 3 qubit (nine physical qubits) Deutsch-Josza computation indicates that the algorithmic fidelity is more a question of the total time to implement the gates than of the physical complexity of those gates.
@article{arxiv.quant-ph/0309051,
title = {Implementing a Quantum Algorithm with Exchange-Coupled Quantum Dots: a Feasibility study},
author = {E. Simon Myrgren and K. Birgitta Whaley},
journal= {arXiv preprint arXiv:quant-ph/0309051},
year = {2007}
}
Comments
24 pages, 19 figures, revised version with an expanded appendix. to be published in Quantum Information Processing