Optimal multiqubit operations for Josephson charge qubits |
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| Authors: | Niskanen Antti O Vartiainen Juha J Salomaa Martti M |
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| Institution: | Materials Physics Laboratory, Helsinki University of Technology, POB 2200 (Technical Physics), FIN-02015 HUT, Espoo, Finland. antti.niskanen@vtt.fi |
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| Abstract: | We introduce a method for finding the required control parameters for a quantum computer that yields the desired quantum algorithm without invoking elementary gates. We concentrate on the Josephson charge-qubit model, but the scenario is readily extended to other physical realizations. Our strategy is to numerically find any desired double- or triple-qubit gate. The motivation is the need to significantly accelerate quantum algorithms in order to fight decoherence. |
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