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Effect of magnetic field on energy and entanglement of an exciton in coupled quantum dots
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10.1063/1.3590139
/content/aip/journal/jap/109/9/10.1063/1.3590139
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/9/10.1063/1.3590139
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic illustration of the longitudinal confinement potential in the VCQDs.

Image of FIG. 2.
FIG. 2.

(Color online) The exciton transition energies as a function of the magnetic field for different electron and hole spin states in a single QD for meV, nm, and . The inset shows the spin-splitting energies of the bright and the dark states vs the magnetic field. The filled dots are our theoretical data, and the empty ones are the experimental data extracted from Ref. 33.

Image of FIG. 3.
FIG. 3.

(Color online) The exciton transition energies as a function of the magnetic field in the VCQDs for meV, nm, and nm.

Image of FIG. 4.
FIG. 4.

(Color online) Dependence of the binding energy of the exciton in VCQDs as a function of the lateral confinement for B = 0, 20, and 40 T.

Image of FIG. 5.
FIG. 5.

(Color online) Dependence of the exciton binding energy and the average distance between the electron and the hole as a function of the barrier width, Wb , in symmetrical VCQDs with meV, B = 8 T, and nm, respectively.

Image of FIG. 6.
FIG. 6.

Entanglement entropy, S, of the exciton as a function of the barrier width, Wb , in symmetrical VCQDs with meV, B = 8 T, and and 4 nm, respectively.

Image of FIG. 7.
FIG. 7.

(Color online) Wave function of the exciton as functions of the electron and hole coordinates in the z direction in symmetrical VCQDs with meV, B = 8 T, and nm for the barrier thicknesses of (a) nm, (b) nm, (c) nm, and (d) nm.

Image of FIG. 8.
FIG. 8.

Entanglement entropy, S, of the exciton as a function of the barrier width, Wb , in asymmetrical VCQDs with meV, B = 8 T, nm, and and 2 nm, respectively.

Image of FIG. 9.
FIG. 9.

(Color online) Wave function of the exciton as functions of the electron and hole coordinates in the z direction in asymmetrical VCQDs with meV, B = 8 T, nm, and nm for the barrier thicknesses of (a) nm, (b) nm, (c) nm, and (d) nm.

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/content/aip/journal/jap/109/9/10.1063/1.3590139
2011-05-12
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Effect of magnetic field on energy and entanglement of an exciton in coupled quantum dots
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/9/10.1063/1.3590139
10.1063/1.3590139
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