Localized charge bifurcation in the coupled quantum dots

Abstract

We analyzed theoretically localized charge relaxation in a double quantum dot (QD) system coupled with continuous spectrum states in the presence of localized electrons Coulomb interaction in a single QD. We have found that for a wide range of system parameters charge relaxation occurs through two stable regimes with significantly different relaxation rates. A peculiar time moment exists in the system at which rapid switching between stable regimes takes place. We consider this phenomenon to be applicable for creation of active elements in nano-electronics based on the fast transition effect between two stable states.

7 pages, 4 figures

References in corpus (2)

• A triple quantum dot in a single wall carbon nanotube
• Charged excitons and biexcitons in laterally coupled InGaAs quantum dots

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