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arXiv · 1302.6565

Analyzing the Toffoli gate in disordered circuit QED

J. Khatibi Moqadam·Renato Portugal·N. F. Svaiter·G. O. Corrêa
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Abstract

We study the effects of imperfections on the fidelity of the Toffoli gate recently realized in a circuit~QED setup using quantum control methods. The noise is introduced in the interqubits interactions. The coupling constants are no longer fixed; instead, they fluctuate around average values obeying some given probability density functions characterizing the dynamical-imperfection case. We also consider the static-imperfection case in which the values of the coupling constants are not exactly known. We obtain a more robust gate by modifying the quantum optimization problem using a weighted average of the fidelity over an interval of coupling values as the objective functional.

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J. Khatibi Moqadam, Renato Portugal, N. F. Svaiter, G. O. Corrêa. 2016-08-01. Analyzing the Toffoli gate in disordered circuit QED. https://doi.org/10.1103/physreva.87.042324

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