Storage and retrieval of light pulse in coupled quantum wells
نویسندگان
چکیده
منابع مشابه
Optimal control of light pulse storage and retrieval.
We demonstrate experimentally a procedure to obtain the maximum efficiency for the storage and retrieval of light pulses in atomic media. The procedure uses time-reversal to obtain optimal input signal pulse shapes. Experimental results in warm Rb vapor are in good agreement with theoretical predictions and demonstrate a substantial improvement of efficiency. This optimization procedure is appl...
متن کاملMagnetoresistance in Coupled Quantum Wells
The in-plane magnetic field suppresses the quantum coupling between electrons in a double quantum well structure. The microscopical theory of this effect is developed and confirmed experimentally. We have shown that the decrease of the " resistance resonance " peak is sensitive to the mutual orientation of the current and the in-plane magnetic field. The characteristic field required for the su...
متن کاملExcitonic binding in coupled quantum wells
We study excitonic states in the presence of applied electric field in 8-nm GaAs coupled quantum wells ~QW’s! separated by a 4-nm Al0.33Ga0.67As barrier and in 6-nm In0.1Ga0.9As coupled QW’s separated by a 4-nm GaAs barrier in which effects attributed to macroscopically ordered excitonic states have been recently reported. We discuss the differences in the nature of the states and in the origin...
متن کاملEnhancement of coherent charge oscillations in coupled quantum wells by femtosecond pulse shaping
The effect of femtosecond pulse shaping on the amplitude of optically excited coherent charge oscillations in degenerate coupled quantum wells is analyzed. In the absence of dephasing, the final oscillating polarization after the end of the shaped pulse depends only on the optical power spectrum; pulse shaping cannot enhance the final coherent polarization. However, appropriately shaped ultrash...
متن کاملExciton condensation in coupled quantum wells
Bound electron–hole pairs—excitons—are Bose particles with small mass. Exciton Bose–Einstein condensation is expected to occur at a few degrees Kelvin—a temperature many orders of magnitude higher than for atoms. Experimentally, an exciton temperature well below 1 K is achieved in coupled quantum well (CQW) semiconductor nanostructures. In this contribution, we review briefly experiments that s...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: AIP Advances
سال: 2016
ISSN: 2158-3226
DOI: 10.1063/1.4945442