A Semiconductor-Based Photonic Memory Cell.
Photonic signals were efficiently stored in a semiconductor-based memory cell. The incident photons were converted to electron-hole pairs that were locally stored in a quantum well that was laterally modulated by a field-effect tunable electrostatic superlattice. At large superlattice potential amplitudes, these pairs were stored for a time that was at least five orders of magnitude longer than their natural lifetime. At an arbitrarily chosen time, they were released in a short and intense flash of incoherent light, which was triggered by flattening the superlattice amplitude.
Zimmermann
S
Sektion Physik and Center for Nanoscience, Ludwig-Maximilians-Universität, Geschwister-Scholl-Platz 1, D-80539 München, Germany. Walter-Schottky-Institut, Technische Universität München, Am Coulombwall, D-85748 Garching, Germany. 
Wixforth
A
Kotthaus
JP
Wegscheider
W
Bichler
M