Optimal tuning of an entangling gate in a circuit-QED architecture

Details Optimal tuning of an entangling gate in a circuit-QED architecture Optimal tuning of an entangling gate in a circuit-QED architecture

2011-10-03

arxiv.org/abs/1110.0379v1

Physics

Condensed Matter

Superconductivity

4 pages, 4 figures

Scientific paper

We identify optimal operating conditions of an entangling two-qubit gate realized by a capacitive coupling of two transmons in a circuit-QED architecture. Sensitivity of the optimized gate to 1/f flux and critical current noise is suppressed to leading order. The procedure only requires a preliminary estimate of the 1/f noise amplitudes. No additional control or bias line beyond those used for the manipulation of individual qubits are needed. The proposed optimization is effective also in the presence of relaxation processes and of spontaneous emission through the resonator (Purcell effect).

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