An original approach for the control of exciton–exciton Coulomb coupling in semiconductor macroatoms/molecules is proposed. We show that by applying properly tailored external fields, we can induce—or significantly reinforce—excitonic dipoles, which in turn allows one to control and magnify intra- as well as interdot few-exciton effects. Such a dipole–dipole interaction mechanism will be accounted for within a simple analytical model, which is found to be in good agreement with fully three-dimensional calculations. The proposed approach may play an important role for the design and realization of fully optical quantum gates as well as ultrafast optical switches.
Field-induced Coulomb coupling in semiconductor macroatoms: Application to "single-electron" quantum devices / D'Amico, I.; Rossi, Fausto. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - 79:11(2001), pp. 1676-1678. [10.1063/1.1399003]
Field-induced Coulomb coupling in semiconductor macroatoms: Application to "single-electron" quantum devices
ROSSI, FAUSTO
2001
Abstract
An original approach for the control of exciton–exciton Coulomb coupling in semiconductor macroatoms/molecules is proposed. We show that by applying properly tailored external fields, we can induce—or significantly reinforce—excitonic dipoles, which in turn allows one to control and magnify intra- as well as interdot few-exciton effects. Such a dipole–dipole interaction mechanism will be accounted for within a simple analytical model, which is found to be in good agreement with fully three-dimensional calculations. The proposed approach may play an important role for the design and realization of fully optical quantum gates as well as ultrafast optical switches.File | Dimensione | Formato | |
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https://hdl.handle.net/11583/1405233
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