Controlled phase gate for solid-state charge-qubit architectures

S G Schirmer, D K L Oi, A D Greentree

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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.

Original languageEnglish
Article number012325
Pages (from-to)-
Number of pages13
JournalPhysical Review A
Volume71
Issue number1
DOIs
Publication statusPublished - Jan 2005

Keywords

  • quantum systems
  • silicon
  • solid-state charge qubits

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