Controlled phase gate for solid-state charge qubits

Details Controlled phase gate for solid-state charge qubits Controlled phase gate for solid-state charge qubits

2004-10-08

arxiv.org/abs/quant-ph/0410062v1

Phys. Rev. A 71, 012325 (2005)

Physics

Quantum Physics

14 pages, 11 figures, 2 tables, RevTeX4

Scientific paper

10.1103/PhysRevA.71.012325

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.

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