Single-Shot Readout of Macroscopic Quantum Superposition State in a Superconducting Flux Qubit

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dc.creatorTanaka, Hirotaka
dc.creatorSaito, Shiro
dc.creatorNakano, Hayato
dc.creatorSemba, Kouichi
dc.creatorUeda, Masahito
dc.creatorTakayanagi, Hideaki
dc.date2004-07-12
dc.date.accessioned2026-07-07T02:59:09Z
dc.date.available2026-07-07T02:59:09Z
dc.descriptionSingle-shot readout experiments were performed on the two lowest-energy states of a superconducting qubit with three Josephson junctions embedded in a superconducting loop. We measured the qubit state via switching current Isw of a current-biased dc-SQUID, a quantum detector surrounding the qubit loop. The qubit signals were measured in a small Isw regime of the SQUID, typically less than 100 nA, where the Isw distribution is particularly narrow. The obtained single-shot data indicate that the qubit state is readout, through the flux generated by the qubit persistent-current, as energy eigenstates rather than current eigenstates.
dc.description5 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0407299
dc.identifierhttp://arxiv.org/abs/cond-mat/0407299
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/24402
dc.subjectSuperconductivity
dc.titleSingle-Shot Readout of Macroscopic Quantum Superposition State in a Superconducting Flux Qubit
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