Decoherence effects on the generation of exciton entangled states in coupled quantum dots

Details Decoherence effects on the generation of exciton entangled states in coupled quantum dots Decoherence effects on the generation of exciton entangled states in coupled quantum dots

1999-09-09

arxiv.org/abs/cond-mat/9909139v1

Physics

Condensed Matter

Strongly Correlated Electrons

Work presented at the Sixth International conference on the Optics of Excitons in Confined Systems, Ascona, Switzerland Aug. 3

Scientific paper

We report on exciton-acoustic-phonon coupling effects on the generation of exciton maximally entangled states in N=2 and 3 quantum dot systems. In particular, we address the question of the combined effect of laser pulses, appropriate for generating Bell and Greenberger-Horne-Zeilinger entangled states, together with decoherence mechanisms as provided by a phonon reservoir. By solving numerically the master equation for the optically driven exciton-phonon kinetics, we show that the generation of maximally entangled exciton states is preserved over a reasonable parameter window.

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