0405042v1

related topics
{spin, pulse, spins}
{time, decoherence, evolution}
{qubit, qubits, gate}
{error, code, errors}
{state, phys, rev}
{bell, inequality, local}
{cos, sin, state}
{level, atom, field}

Gates for the Kane Quantum Computer in the Presence of Dephasing

Charles D. Hill, Hsi-Sheng Goan

abstract: In this paper we investigate the effect of dephasing on proposed quantum gates for the solid-state Kane quantum computing architecture. Using a simple model of the decoherence, we find that the typical error in a CNOT gate is $8.3 \times 10^{-5}$. We also compute the fidelities of Z, X, Swap, and Controlled Z operations under a variety of dephasing rates. We show that these numerical results are comparable with the error threshold required for fault tolerant quantum computation.

oai_identifier:
oai:arXiv.org:quant-ph/0405042
categories:
quant-ph
comments:
9 pages, 9 figures
doi:
10.1103/PhysRevA.70.022310
arxiv_id:
quant-ph/0405042
created:
2004-05-10

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