Ortner G, Bayer M, Lyanda-Geller Y, Reinecke T L, Kress A, Reithmaier J P, Forchel A
Experimentelle Physik II, Universität Dortmund, D-44221 Dortmund, Germany.
Phys Rev Lett. 2005 Apr 22;94(15):157401. doi: 10.1103/PhysRevLett.94.157401. Epub 2005 Apr 19.
Controllable interactions that couple quantum dots are a key requirement in the search for scalable solid state implementations for quantum information technology. From optical studies of excitons and corresponding calculations, we demonstrate that an electric field on vertically coupled pairs of In(0.6)Ga(0.4)As/GaAs quantum dots controls the mixing of the exciton states on the two dots and also provides controllable coupling between carriers in the dots.
