title: Excitonic quantum interference in a quantum dot chain with rings.
abstract: We demonstrate excitonic quantum interference in a closely spaced quantum dot chain with nanorings. In the resonant dipole-dipole interaction model with direct diagonalization method, we have found a peculiar feature that the excitation of specified quantum dots in the chain is completely inhibited, depending on the orientational configuration of the transition dipole moments and specified initial preparation of the excitation. In practice, these excited states facilitating quantum interference can provide a conceptual basis for quantum interference devices of excitonic hopping.
authors.affiliation: Department of Display and Semiconductor Physics, Korea University, Seochang, Jochiwon, Chungnam 339-700, Korea.
authors.forename: Suc-Kyoung
authors.initials: SK
authors.lastname: Hong
authors.forename: Seog Woo
authors.initials: SW
authors.lastname: Nam
authors.forename: Kyu-Hwang
authors.initials: KH
authors.lastname: Yeon