Control of excitation transfer in coupled quantum dots by a nonresonant laser pulse. (August 2015)

• Record Type: Journal Article
• Authors: Astapenko, V.A.; Golovinski, P.A.; Yakovets, A.V.
• Is Part Of: Optics & laser technology. Volume 71(2015)
• Page Start: 103
• Page End: 107
• Publication Date: 2015-08
• Subjects: Optical stark effect -- Quantum dots -- Short laser pulse; Optics -- Periodicals; Lasers -- Periodicals; Electronic journals; 621.366
• DOI: 10.1016/j.optlastec.2015.03.006
• Languages: English
• ISSNs: 0030-3992

Abstract

Abstract: We study theoretically fast transfer of excitons between pairs of coupled quantum dots driven by the optical Stark effect that is produced by a short nonresonant laser pulse. The Schrödinger equation, in which the relative position of energy levels of quantum dot subsystems is time-dependent, is solved numerically. Computer simulation demonstrates the mechanism of controlling the efficient excitation transfer by the action of a picosecond laser pulse with a flat-top intensity profile.