arXiv:quant-ph/0410062 · Physical Review A

Controlled phase gate for solid-state charge-qubit architectures

S. G. Schirmer, Daniel K. L. Oi, Andrew D. Greentree

Published Jan 18, 2005• 14 citations

Abstract

We describe a mechanism for realizing a controlled phase gate for solid-state charge qubits. By augmenting the positionally defined qubit with an auxiliary state, and changing the charge distribution in the three-dot system, we are able to effectively switch the Coulombic interaction, effecting an entangling gate. We consider two architectures, and numerically investigate their robustness to gate noise.

DOI: 10.1103/physreva.71.012325

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