Optimal laser-control of double quantum dots

Details Optimal laser-control of double quantum dots Optimal laser-control of double quantum dots

2007-07-02

arxiv.org/abs/0707.0179v3

Phys. Rev. B 77, 085324 (2008)

Physics

Condensed Matter

Other Condensed Matter

5 pages, 4 figures

Scientific paper

10.1103/PhysRevB.77.085324

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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