118 research outputs found
Quantization of the biexcitonic continuum states in semiconductor quantum wells by localization
No full text
Off-diagonal disorder model for exciton polaritons in layered media. Disorder-induced origin of radiative widths
No full textExcitons in an infinite layered dipolar medium, such as a layered crystal or a multiple-quantum-well stack, with perfect periodicity exhibit a vanishing radiative width due to the requirement of energy-momentum conservation. Using a polariton model with off-diagonal disorder and a configuration-averaging technique, we show how deviations from the ideal case, specifically in the form of weak departures from perfect periodicity, and the resulting breaking of full translational invariance, give rise to a nonvanishing radiative width.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/31260/1/0000166.pd
Interaction of THz transients and ultrashort optical pulses in quantum wells: anisotropic wavepackets and optical switches
No full text
- …
