File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Tunable Fano effect in parallel-coupled double quantum dot system

TitleTunable Fano effect in parallel-coupled double quantum dot system
Authors
Issue Date2005
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B - Condensed Matter And Materials Physics, 2005, v. 71 n. 23 How to Cite?
AbstractWith the help of the Green function technique and the equation of motion approach, the electronic transport through a parallel-coupled double quantum dot (DQD) is theoretically studied. Owing to the interdot coupling, the bonding and antibonding states of the artificial quantum-dot molecule may constitute an appropriate basis set. Based on this picture, the Fano interference in the conductance spectra of the DQD system is readily explained. The possibility of manipulating the Fano line shape in the tunneling spectra of the DQD system is explored by tuning the dot-lead coupling, the interdot coupling, the magnetic flux threading the ring connecting dots and leads, and the flux difference between two subrings. It has been found that by making use of various tunings, the direction of the asymmetric tail of Fano line shape may be flipped by external fields and the continuous conductance spectra may be magnetically manipulated with the line shape retained. More importantly, by adjusting the magnetic flux, the function of two molecular states can be exchanged, giving rise to a swap effect, which might play a role as a qubit in the quantum computation. © 2005 The American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/147663
ISSN
2014 Impact Factor: 3.736
2015 SCImago Journal Rankings: 1.933
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLu, Hen_HK
dc.contributor.authorLü, Ren_HK
dc.contributor.authorZhu, BFen_HK
dc.date.accessioned2012-05-29T06:07:36Z-
dc.date.available2012-05-29T06:07:36Z-
dc.date.issued2005en_HK
dc.identifier.citationPhysical Review B - Condensed Matter And Materials Physics, 2005, v. 71 n. 23en_HK
dc.identifier.issn1098-0121en_HK
dc.identifier.urihttp://hdl.handle.net/10722/147663-
dc.description.abstractWith the help of the Green function technique and the equation of motion approach, the electronic transport through a parallel-coupled double quantum dot (DQD) is theoretically studied. Owing to the interdot coupling, the bonding and antibonding states of the artificial quantum-dot molecule may constitute an appropriate basis set. Based on this picture, the Fano interference in the conductance spectra of the DQD system is readily explained. The possibility of manipulating the Fano line shape in the tunneling spectra of the DQD system is explored by tuning the dot-lead coupling, the interdot coupling, the magnetic flux threading the ring connecting dots and leads, and the flux difference between two subrings. It has been found that by making use of various tunings, the direction of the asymmetric tail of Fano line shape may be flipped by external fields and the continuous conductance spectra may be magnetically manipulated with the line shape retained. More importantly, by adjusting the magnetic flux, the function of two molecular states can be exchanged, giving rise to a swap effect, which might play a role as a qubit in the quantum computation. © 2005 The American Physical Society.en_HK
dc.languageengen_US
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/en_HK
dc.relation.ispartofPhysical Review B - Condensed Matter and Materials Physicsen_HK
dc.titleTunable Fano effect in parallel-coupled double quantum dot systemen_HK
dc.typeArticleen_HK
dc.identifier.emailLu, H: luhz@hku.hken_HK
dc.identifier.authorityLu, H=rp01599en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1103/PhysRevB.71.235320en_HK
dc.identifier.scopuseid_2-s2.0-28344450731en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-28344450731&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume71en_HK
dc.identifier.issue23en_HK
dc.identifier.isiWOS:000230276800074-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridLu, H=24376662200en_HK
dc.identifier.scopusauthoridLü, R=26643365900en_HK
dc.identifier.scopusauthoridZhu, BF=7401683321en_HK

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats