NMR-like Control of a Quantum Bit Superconducting Circuit
E. Collin, G. Ithier, A. Aassime, P. Joyez, D. Vion, D. Esteve
DOI 10.1103/PhysRevLett.93.157005 · Physical Review Letters
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Abstract
Coherent superpositions of quantum states have already been demonstrated in different superconducting circuits based on Josephson junctions. These circuits are now considered for implementing quantum bits. We report on experiments in which the state of a qubit circuit, the quantronium, is efficiently manipulated using methods inspired from nuclear magnetic resonance (NMR): multipulse sequences are used to perform arbitrary operations, to improve their accuracy, and to fight decoherence.
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