Optimal laser control of double quantum dots

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

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30 Citations (Scopus)

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 languageEnglish
Article number085324
Number of pages5
JournalPhysical Review B
Volume77
Issue number8
DOIs
Publication statusPublished - Feb 2008
Externally publishedYes
Publication typeA1 Journal article-refereed

Keywords

  • THZ PULSES

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