Quantum Computation with Quantum Dots
Mesoscale and Nanoscale Physics
2009-10-30 v3 Quantum Physics
Abstract
We propose a new implementation of a universal set of one- and two-qubit gates for quantum computation using the spin states of coupled single-electron quantum dots. Desired operations are effected by the gating of the tunneling barrier between neighboring dots. Several measures of the gate quality are computed within a newly derived spin master equation incorporating decoherence caused by a prototypical magnetic environment. Dot-array experiments which would provide an initial demonstration of the desired non-equilibrium spin dynamics are proposed.
Cite
@article{arxiv.cond-mat/9701055,
title = {Quantum Computation with Quantum Dots},
author = {Daniel Loss and David P. DiVincenzo},
journal= {arXiv preprint arXiv:cond-mat/9701055},
year = {2009}
}
Comments
12 pages, Latex, 2 ps figures. v2: 20 pages (very minor corrections, substantial expansion), submitted to Phys. Rev. A