{ "id": "cond-mat/0412668", "version": "v2", "published": "2004-12-23T18:51:25.000Z", "updated": "2005-01-13T16:54:16.000Z", "title": "Low- and high-frequency noise from coherent two-level systems", "authors": [ "Alexander Shnirman", "Gerd Schön", "Ivar Martin", "Yuriy Makhlin" ], "comment": "minor corrections, references added", "journal": "Phys. Rev. Lett. 94, 127002 (2005)", "doi": "10.1103/PhysRevLett.94.127002", "categories": [ "cond-mat.mes-hall" ], "abstract": "Recent experiments indicate a connection between the low- and high-frequency noise affecting superconducting quantum systems. We explore the possibilities that both noises can be produced by one ensemble of microscopic modes, made up, e.g., by sufficiently coherent two-level systems (TLS). This implies a relation between the noise power in different frequency domains, which depends on the distribution of the parameters of the TLSs. We show that a distribution, natural for tunneling TLSs, with a log-uniform distribution in the tunnel splitting and linear distribution in the bias, accounts for experimental observations.", "revisions": [ { "version": "v2", "updated": "2005-01-13T16:54:16.000Z" } ], "analyses": { "keywords": [ "distribution", "high-frequency noise affecting superconducting quantum", "noise affecting superconducting quantum systems", "sufficiently coherent two-level systems", "microscopic modes" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Phys. Rev. Lett." }, "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }