Long-range spin transfer in triple quantum dots

Download
  1. (PDF, 644 KB)
  2. Get@NRC: Long-range spin transfer in triple quantum dots (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1103/PhysRevLett.112.176803
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for:
TypeArticle
Journal titlePhysical Review Letters
ISSN0031-9007
Volume112
Issue17
Article number176803
SubjectAtomic physics; Physics; Coherent structure; Delocalized electron; Intermediate state; Narrow resonances; Nearest neighbors; Single electron; Spin correlations; Spin selection; Semiconductor quantum dots
AbstractTunneling in a quantum coherent structure is not restricted to only nearest neighbors. Hopping between distant sites is possible via the virtual occupation of otherwise avoided intermediate states. Here we report the observation of long-range transitions in the transport through three quantum dots coupled in series. A single electron is delocalized between the left and right quantum dots, while the center one remains always empty. Superpositions are formed, and both charge and spin are exchanged between the outermost dots. The delocalized electron acts as a quantum bus transferring the spin state from one end to the other. Spin selection is enabled by spin correlations. The process is detected via the observation of narrow resonances which are insensitive to Pauli spin blockade. © 2014 American Physical Society.
Publication date
LanguageEnglish
AffiliationMeasurement Science and Standards; Security and Disruptive Technologies; Information and Communication Technologies; National Research Council Canada
Peer reviewedYes
NPARC number21272847
Export citationExport as RIS
Report a correctionReport a correction
Record identifierf58ae6b3-c7cb-407b-a7c6-06cb4e354f10
Record created2014-12-03
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)