Open AccessDecoherence Effects on the Generation of Exciton Entangled States in Coupled Quantum Dots
Author(s) -
Rodríguez F.J.,
Quiroga L.,
Johnson N.F.
Publication year - 2000
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
eISSN - 1521-396X
pISSN - 0031-8965
DOI - 10.1002/1521-396x(200003)178:1<403::aid-pssa403>3.0.co;2-9
Subject(s) - quantum decoherence , exciton , physics , quantum mechanics , biexciton , quantum dot , coupling (piping) , phonon , master equation , w state , quantum entanglement , quantum , materials science , metallurgy
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.