Abstract
Spin light emitting diodes (spin-LEDs) are prominent for electrically injecting electronic spin states into semiconductor quantum dots (QDs) and are highly suitable for spin storage [1]. For an efficient quantum information processing with these QDs, the initialization of the electronic spin states has to be accomplished repeatably and reliably with short electrical pulses. Here, we report on an anomaly of the circular polarization degree (CPD) emitted by InGaAs QDs within a spin-LED with a ZnMnSe spin aligner, if the device is excited with pulses of some nanoseconds width.
© 2009 IEEE
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