Acceleration of quantum algorithms using three-qubit gates

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Quantum-circuit optimization is essential for any practical realization of quantum computation, in order to beat decoherence. We present a scheme for implementing the final stage in the compilation of quantum circuits, i.e., for finding the actual physical realizations of the individual modules in the quantum-gate library. We find that numerical optimization can be efficiently utilized in order to generate the appropriate control-parameter sequences which produce the desired three-qubit modules within the Josephson charge-qubit model. Our work suggests ways in which one can in fact considerably reduce the number of gates required to implement a given quantum circuit, hence diminishing idle time and significantly accelerating the execution of quantum algorithms.
10 pages, To appear in the International Journal of Quantum Information Vol. 2 Year 2004

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Quantum Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/91539

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/quant-ph/0310165
 http://arxiv.org/abs/quant-ph/0310165

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arXiv