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Models of mesoscopic time-resolved current detection

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BEDNORZ, Adam, Wolfgang BELZIG, 2010. Models of mesoscopic time-resolved current detection. In: Physical Review B. 81(12). ISSN 1098-0121. Available under: doi: 10.1103/PhysRevB.81.125112

@article{Bednorz2010Model-12438, title={Models of mesoscopic time-resolved current detection}, year={2010}, doi={10.1103/PhysRevB.81.125112}, number={12}, volume={81}, issn={1098-0121}, journal={Physical Review B}, author={Bednorz, Adam and Belzig, Wolfgang} }

<rdf:RDF xmlns:dcterms="" xmlns:dc="" xmlns:rdf="" xmlns:bibo="" xmlns:dspace="" xmlns:foaf="" xmlns:void="" xmlns:xsd="" > <rdf:Description rdf:about=""> <dcterms:rights rdf:resource=""/> <dc:creator>Bednorz, Adam</dc:creator> <dc:contributor>Belzig, Wolfgang</dc:contributor> <dc:rights>terms-of-use</dc:rights> <dcterms:title>Models of mesoscopic time-resolved current detection</dcterms:title> <dcterms:isPartOf rdf:resource=""/> <dc:date rdf:datatype="">2011-07-18T09:54:04Z</dc:date> <dc:creator>Belzig, Wolfgang</dc:creator> <dcterms:bibliographicCitation>First publ. in: Physical Review B 81 (2010), 125112</dcterms:bibliographicCitation> <dc:contributor>Bednorz, Adam</dc:contributor> <dspace:isPartOfCollection rdf:resource=""/> <dc:language>eng</dc:language> <dcterms:issued>2010</dcterms:issued> <foaf:homepage rdf:resource="http://localhost:8080/jspui"/> <bibo:uri rdf:resource=""/> <dcterms:abstract xml:lang="eng">Quantum transport in mesoscopic conductors is essentially governed by the laws of quantum mechanics. One of the major open questions of quantum mechanics is what happens if noncommuting observables are measured simultaneously. Since current operators at different times do not commute, the high-frequency correlation functions of the current are realization of this fundamental quantum question. We formulate this problem in the context of measurements of finite-frequency current cumulants in a general quantum point contact, which are the subject to ongoing experimental effort. To this end, we present two models of detectors that correspond to a weak time-resolved measurement of the electronic current in a mesoscopic junction. In both cases, the backaction of the detector leads to observable corrections to the current correlations functions involving the so-called noise susceptibilities. As a result, we propose a reinterpretation of environmental corrections to the finite-frequency cumulants as inevitable effect resulting from basic quantum mechanical principles. Finally we make concrete predictions for the temperature, voltage, and frequency dependence of the third cumulant, which could be verified directly using current experimental techniques.</dcterms:abstract> <dcterms:available rdf:datatype="">2011-07-18T09:54:04Z</dcterms:available> <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/> </rdf:Description> </rdf:RDF>

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