Detection of quantum noise from mesoscopic devices with an SIS detector

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dc.creatorDeblock, R.
dc.creatorOnac, E.
dc.creatorGurevich, L.
dc.creatorKouwenhoven, L. P.
dc.date2004-05-26
dc.date.accessioned2026-07-07T02:58:21Z
dc.date.available2026-07-07T02:58:21Z
dc.descriptionQuantum mechanics can strongly influence the noise properties of mesoscopic devices. To probe this effect we have measured the current fluctuations at high-frequency (5-90G Hz) using a superconductor-insulator-superconductor tunnel junction as an on-chip spectrum analyzer. By coupling this frequency-resolved noise detector to a quantum device we can measure the high-frequency, non-symmetrized noise as demonstrated for a Josephson junction. The same scheme has been used to detect the current fluctuations arising from coherent charge oscillations in a two-level system, a superconducting charge qubit. A narrow band peak was observed in the spectral noise density at the frequency of the coherent charge oscillations.
dc.description4 pages, 2 figures, to appear in the proceedings of the XXXIXth Rencontres de Moriond (La Thuile, 2004) "Quantum information and decoherence in nanosystems"
dc.identifierhttps://arxiv.org/abs/cond-mat/0405601
dc.identifierhttp://arxiv.org/abs/cond-mat/0405601
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/24052
dc.subjectDisordered Systems and Neural Networks
dc.subjectMesoscale and Nanoscale Physics
dc.titleDetection of quantum noise from mesoscopic devices with an SIS detector
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