Excitation dynamics in a three‐quantum dot system driven by optical near‐field interaction: towards a nanometric photonic device
Kiyoshi Kobayashi, Suguru Sangu, Akira Shojiguchi +3 more
Using density operator formalism, we discuss interdot excitation energy transfer dynamics driven by the optical near-field and phonon bath reservoir, as well as coherent excitation dynamics of a quantum dot system. As an effective interaction between quantum dots induced by the optical near-field, the projection operator method gives a renormalized dipole interaction, which is expressed as a sum of the Yukawa functions and is used as the optical near-field coupling of quantum dots. We examine one- and two-exciton dynamics of a three-quantum dot system suggesting a nanometric photonic switch, and numerically obtain a transfer time comparable with the recent experimental results for CuCl quantum dots.
Journal of Microscopy•Jun 1, 2003•21 citations