Quantum two-level systems in Josephson junctions as naturally formed qubits

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dc.creatorZagoskin, A. M.
dc.creatorAshhab, S.
dc.creatorJohansson, J. R.
dc.creatorNori, Franco
dc.date2006-03-28
dc.date2006-08-18
dc.date.accessioned2026-07-07T07:05:01Z
dc.date.available2026-07-07T07:05:01Z
dc.descriptionThe two-level systems (TLSs) naturally occurring in Josephson junctions constitute a major obstacle for the operation of superconducting phase qubits. Since these TLSs can possess remarkably long decoherence times, we show that such TLSs can themselves be used as qubits, allowing for a well controlled initialization, universal sets of quantum gates, and readout. Thus, a single current-biased Josephson junction (CBJJ) can be considered as a multiqubit register. It can be coupled to other CBJJs to allow the application of quantum gates to an arbitrary pair of qubits in the system. Our results indicate an alternative way to realize superconducting quantum information processing.
dc.descriptionReference added
dc.identifierhttps://arxiv.org/abs/cond-mat/0603753
dc.identifierhttp://arxiv.org/abs/cond-mat/0603753
dc.identifierPhys. Rev. Lett. 97, 077001 (2006)
dc.identifierdoi:10.1103/PhysRevLett.97.077001
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/109536
dc.subjectSuperconductivity
dc.subjectMesoscale and Nanoscale Physics
dc.subjectQuantum Physics
dc.titleQuantum two-level systems in Josephson junctions as naturally formed qubits
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