Electron localization and entanglement in a two-electron quantum dot

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dc.creatorYannouleas, Constantine
dc.creatorLandman, Uzi
dc.date2005-01-25
dc.date2005-01-29
dc.date.accessioned2026-07-07T03:03:26Z
dc.date.available2026-07-07T03:03:26Z
dc.descriptionCalculations for two electrons in an elliptic quantum dot, using symmetry breaking at the unrestricted Hartree-Fock level and subsequent restoration of the broken parity via projection techniques, show that the electrons can localize and form a molecular dimer, described by a Heitler-London-type wave function. The calculated singlet-triplet splitting (J) as a function of the magnetic field (B) agrees with cotunneling measurements. Knowledge of the dot shape and of J(B) allows determination of the degree of entanglement in the ground state of the dot, which is of interest for the implementation of quantum logic gates. The theoretical value agrees with the experimental estimates.
dc.descriptionParts of the text were rewritten in order to enhance the clarity of presentation. Figure 2 was revised. REVTEX4. 5 pages with 2 figures (one in color) and one table. For related papers, see http://www.prism.gatech.edu/~ph274cy/
dc.identifierhttps://arxiv.org/abs/cond-mat/0501612
dc.identifierhttp://arxiv.org/abs/cond-mat/0501612
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/25748
dc.subjectMesoscale and Nanoscale Physics
dc.subjectStrongly Correlated Electrons
dc.subjectChemical Physics
dc.subjectQuantum Physics
dc.titleElectron localization and entanglement in a two-electron quantum dot
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