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(Color online) (a) Energy spectrum vs applied electric field; only the two lowest energy states shown; dotted lines: no Coulomb interaction; full lines: exciton. (b) Differences between the lowest excitonic energies. Resonances are seen at fields of and [values of the energy in (a) taken from the first lateral subband].
(Color online) Average position in the direction for various electric fields; full lines—ground state; dashed lines—first excited state; blue (black)—electron; red (gray)—hole; WD, ND—wide and narrow dot regions (plot boundaries not in perfect match with structure’s endings).
(Color online) (a) Spectrum showing the four lowest eigenenergies; circles’ sizes vary in proportion to the overlap shown in (b)—.
(Color online) Dynamical evolution of the average position for the electron and the hole . (a) Reverse resonance ; (b) Direct resonance ; (c) zooming in the region indicated.
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