Error Rate of the Kane Quantum Computer CNOT Gate in the Presence of Dephasing

Abstract

We study the error rate of CNOT operations in the Kane solid state quantum computer architecture. A spin Hamiltonian is used to describe the system. Dephasing is included as exponential decay of the off diagonal elements of the system's density matrix. Using available spin echo decay data, the CNOT error rate is estimated at approsimately 10^{-3}.

arXiv commentNew version includes substantial additional data and merges two old figures into one. (12 pages, 6 figures)

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Cited by in corpus (12)

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• Single-spin readout for buried dopant semiconductor qubits
• A Stochastic Liouville Equation Approach for the Effect of Noise in Quantum Computations
• Fast Non-Adiabatic Two Qubit Gates for the Kane Quantum Computer
• Towards Large-Scale Quantum Computation
• Gates for the Kane Quantum Computer in the Presence of Dephasing
• Charge-based silicon quantum computer architectures using controlled single-ion implantation
• Potential Errors in a Scheme of Universal Quantum Gates in Kane's Model