Optimal laser control of double quantum dots

E. Räsänen*, A. Castro, J. Werschnik, A. Rubio, E. K.U. Gross

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

Coherent single-electron control in a realistic semiconductor double quantum dot is studied theoretically. Using optimal-control theory, we show that the energy spectrum of a two-dimensional double quantum dot has a fully controllable transition line. We find that optimized picosecond laser pulses generate population transfer at significantly higher fidelities (>0.99) than conventional sinusoidal pulses. Finally, we design a robust and fast charge switch driven by optimal pulses that are within reach of terahertz laser technology.

Original languageAmerican English
Article number085324
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume77
Issue number8
DOIs
StatePublished - 27 Feb 2008
Externally publishedYes

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