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Optimized design of universal two-qubit gates

I. A. Grigorenko·D. V. Khveshchenko
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Abstract

We construct optimized implementations of the CNOT and other universal two-qubit gates that, unlike many of the previously proposed protocols, are carried out in a single step. The new protocols require tunable inter-qubit couplings but, in return, show a significant improvements in the quality of gate operations. Our optimization procedure can be further extended to the combinations of elementary two-qubit as well as irreducible many-qubit gates.

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I. A. Grigorenko, D. V. Khveshchenko. 2004-12-10. Optimized design of universal two-qubit gates. https://doi.org/10.1103/physrevlett.95.110501

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