Measurement-induced decoherence in electronic interferometry at nanoscale

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buir.contributor.authorTanatar, Bilal
buir.contributor.orcidTanatar, Bilal|0000-0002-5246-0119
dc.citation.epage6196en_US
dc.citation.issueNumber40en_US
dc.citation.spage6193en_US
dc.citation.volumeNumber372en_US
dc.contributor.authorMoldoveanu, V.en_US
dc.contributor.authorTanatar, Bilalen_US
dc.contributor.authorŢolea, M.en_US
dc.date.accessioned2016-02-08T10:07:41Z
dc.date.available2016-02-08T10:07:41Z
dc.date.issued2008en_US
dc.departmentDepartment of Physicsen_US
dc.description.abstractWe introduce a theoretical formalism describing a wide class of 'Which Path' experiments in mesoscopic/nanoscopic transport. The physical system involves a mesoscopic interferometer (e.g. an Aharonov-Bohm ring with embedded dots or a side-coupled quantum dot) which is electrostatically coupled to a nearby quantum point constriction. Due to the charge sensing effect the latter acts as a charge detector. Therefore the interference pattern can be monitored indirectly by looking at the current characteristics of the detector as shown in the experimental work of Buks et al. [E. Buks, R. Schuster, M. Heiblum, D. Mahalu, V. Umansky, Nature (London) 391 (1998) 871]. We use the non-equilibrium Green-Keldysh formalism and a second order perturbative treatment of the Coulomb interaction in order to compute the relevant transport properties. It is shown that in the presence of the Coulomb interaction the current through the detector exhibits oscillations as a function of the magnetic field applied on a single-dot AB interferometer. We also discuss the dependence of the visibility of the Aharonov-Bohm oscillations on the gate potential applied to the dot.en_US
dc.description.provenanceMade available in DSpace on 2016-02-08T10:07:41Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 70227 bytes, checksum: 26e812c6f5156f83f0e77b261a471b5a (MD5) Previous issue date: 2008en
dc.identifier.doi10.1016/j.physleta.2008.07.079en_US
dc.identifier.issn0375-9601
dc.identifier.urihttp://hdl.handle.net/11693/23004
dc.language.isoEnglishen_US
dc.publisherElsevier B.V.en_US
dc.relation.isversionofhttp://dx.doi.org/10.1016/j.physleta.2008.07.079en_US
dc.source.titlePhysics Letters, Section A : General, Atomic and Solid State Physicsen_US
dc.subjectAharonov-Bohm interferometersen_US
dc.subjectControlled dephasingen_US
dc.subjectQuantum interferenceen_US
dc.titleMeasurement-induced decoherence in electronic interferometry at nanoscaleen_US
dc.typeArticleen_US

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