Time-Resolved Studies of Pulsed Electrical Spin Injection into Single InGaAs Quantum Dots

P. Asshoff; J. Zimmer; H. Füser; D. Z. Hu; D. M. Schaadt; M. Hetterich; H. Kalt

CLEO/Europe and EQEC 2009 Conference Digest
(Optica Publishing Group, 2009),
paper ED_P13

Time-Resolved Studies of Pulsed Electrical Spin Injection into Single InGaAs Quantum Dots

P. Asshoff, J. Zimmer, H. Füser, D. Z. Hu, D. M. Schaadt, M. Hetterich, and H. Kalt

European Quantum Electronics Conference 2009

Munich Germany
14–19 June 2009
ISBN: 978-1-4244-4080-1

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P. Asshoff, J. Zimmer, H. Füser, D. Z. Hu, D. M. Schaadt, M. Hetterich, and H. Kalt, "Time-Resolved Studies of Pulsed Electrical Spin Injection into Single InGaAs Quantum Dots," in CLEO/Europe and EQEC 2009 Conference Digest, (Optica Publishing Group, 2009), paper ED_P13.

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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.

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