Phys. Rev. Lett. 93, 157005 (2004) [4 pages]NMR-like Control of a Quantum Bit Superconducting CircuitReceived 17 March 2004; published 6 October 2004 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. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.93.157005
DOI:
10.1103/PhysRevLett.93.157005
PACS:
85.25.Cp, 03.67.Lx, 74.50.+r, 74.78.Na
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