Strong quantum memory at resonant Fermi edges revealed by shot noise

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dc.identifier.uri Ubbelohde, Niels Roszak, K. Hohls, Frank Maire, N. Haug, Rolf J. Novotny, T. 2016-08-30T10:20:25Z 2016-08-30T10:20:25Z 2012-04-23
dc.identifier.citation Ubbelohde, N.; Roszak, K.; Hohls, F.; Maire, N.; Haug, R. J.; Novotny, T.: Strong quantum memory at resonant Fermi edges revealed by shot noise. In: Scientific Reports 2 (2012), 374. DOI:
dc.description.abstract Studies of non-equilibrium current fluctuations enable assessing correlations involved in quantum transport through nanoscale conductors. They provide additional information to the mean current on charge statistics and the presence of coherence, dissipation, disorder, or entanglement. Shot noise, being a temporal integral of the current autocorrelation function, reveals dynamical information. In particular, it detects presence of non-Markovian dynamics, i.e., memory, within open systems, which has been subject of many current theoretical studies. We report on low-temperature shot noise measurements of electronic transport through InAs quantum dots in the Fermi-edge singularity regime and show that it exhibits strong memory effects caused by quantum correlations between the dot and fermionic reservoirs. Our work, apart from addressing noise in archetypical strongly correlated system of prime interest, discloses generic quantum dynamical mechanism occurring at interacting resonant Fermi edges. eng
dc.description.sponsorship QUEST
dc.description.sponsorship Czech Science Foundation/204/11/J042
dc.description.sponsorship Foundation for Polish Science/TEAM
dc.language.iso eng
dc.publisher London : Nature Publishing Group
dc.relation.ispartofseries Scientific Reports 2 (2012)
dc.rights CC BY-NC-SA 3.0
dc.subject singularities eng
dc.subject metals eng
dc.subject dynamics eng
dc.subject.ddc 530 | Physik ger
dc.title Strong quantum memory at resonant Fermi edges revealed by shot noise
dc.type article
dc.type Text
dc.relation.issn 2045-2322
dc.bibliographicCitation.volume 2
dc.bibliographicCitation.firstPage 374
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

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