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arXiv · 0906.3115

Optimal tuning of solid-state quantum gates: A universal two-qubit gate

E. Paladino·A. Mastellone·A. D'Arrigo·G. Falci
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Abstract

We present a general route to reduce inhomogeneous broadening in nanodevices due to 1/f noise. We apply this method to a universal two-qubit gate and demonstrate that for selected optimal couplings, a high-efficient gate can be implemented even in the presence of 1/f noise. Entanglement degradation due to interplay of 1/f and quantum noise is quantified via the concurrence. A charge-phase $\sqrt{\rm i-SWAP}$ gate for spectra extrapolated from single qubit experiments is analyzed.

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E. Paladino, A. Mastellone, A. D'Arrigo, G. Falci. 2010-02-16. Optimal tuning of solid-state quantum gates: A universal two-qubit gate. https://doi.org/10.1103/physrevb.81.052502

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