Volume 74, Number 5, June 2006
|Page(s)||868 - 874|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||03 May 2006|
Electron teleportation between quantum dots using virtual dark exciton
INSP, Université Pierre et Marie Curie-Paris 6, Université Denis Diderot-Paris 7 CNRS, UMR 7588, Campus Boucicaut - 140 rue de Lourmel, 75015 Paris, France
Accepted: 3 April 2006
We here propose a mechanism to teleport electrons between quantum dots through the transformation of a virtual bright exciton into a dark exciton. This mechanism relies on the interactions of two composite bosons: a pair of electrons with opposite spins, trapped in two dots and an electron-hole pair in a free exciton coupled to an unabsorbed pump pulse, which makes it “bright” but virtual. This bright exciton first turns “dark” by dropping its electron and stealing the trapped electron with opposite spin through an exchange Coulomb process with the trapped pair. In a second step, the dark exciton “flies” with its electron to the other dot where it turns bright again, by the inverse process. The “Shiva diagrams” for composite-boson many-body effects that we have recently introduced, enlighten this understanding.
PACS: 71.35.-y – Excitons and related phenomena
© EDP Sciences, 2006
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.