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arXiv · 0707.0179

Optimal laser-control of double quantum dots

E. Rasanen·A. Castro·J. Werschnik·A. Rubio·E. K. U. Gross
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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.

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E. Rasanen, A. Castro, J. Werschnik, A. Rubio, E. K. U. Gross. 2007-12-14. Optimal laser-control of double quantum dots. https://doi.org/10.1103/physrevb.77.085324

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