2007/07/31 by E. Räsänen, E. Rasanen, A. Castro +5 · 36 citations
Chemistry · Engineering · Physics and Astronomy · #Charge (physics) #Coherent control #Electron #Laser #Optics #Optoelectronics #Physics #Picosecond #Population #Quantum dot #Quantum dot laser #Quantum mechanics #Semiconductor #Semiconductor Quantum Structures and Devices #Semiconductor laser theory #Spectroscopy and Laser Applications #Terahertz radiation #Terahertz technology and applications #cond-mat.other
paper · pdf · doi:10.1103/physrevb.77.085324
published in Physical Review B 77(8) (American Physical Society) · 5 pages, 4 figures
arxiv created 2007/12/14 · openalex publication_date 2008/02/27 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.