Slow light propagation via quantum coherence in a semiconductor quantum well

Dingan Han, Yaguang Zeng, Yanfeng Bai

Dingan Han, Yaguang Zeng, Yanfeng Bai

Fu Wang, Zhi Wang, Chongqing Wu Chongqing Wu +1 more

Based on the general mechanism of the coherent population oscillations, we propose the fundamental -harmonic fractional delay (FHFD) to evaluate the superluminal and slow light propagation in semiconductor optical amplifier (SOA). The sinusoidal and square-wave signals in SOA are investigated with the propagation equations. It is shown that the superluminal and slow light always accompany the signal distortion, and FHFD depends on the signal distortion as well as the incident power, the modulation frequency, and the optical gain.

Ku, Sedgwick, Chang-Hasnain +5 more

M. A. Antón, F. Carreño, Francisco Arrieta-Yáñez +2 more

We present a theoretical study of the slow and fast light propagation in semiconductor optical amplifiers based on coherent population oscillations. By modulating the injection current we control the delay or advancement of light signals.

Ai-Xi Chen

In a triple semiconductor quantum well structure coupled by two external fields, we investigate the influence of atomic coherence induced by external fields and decay interference on the absorption and dispersion of a weak pulsed light, and slow light can be achieved in this system. Quantum well structure behaves as "artificial atom" and its advantage of easy integration makes it has some practical applications.