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- W2997112866 abstract "A quantum dot spin light emitting diode provides a test of carrier spin injection into a qubit and a means for analyzing carrier spin injection and local spin polarization. Even with 100% spin-polarized carriers the emitted light may be only partially circularly polarized due to the geometry of the dot. We have calculated carrier polarization-dependent optical matrix elements for InAs/GaAs self-assembled quantum dots (SAQDs) for electron and hole spin injection into a range of quantum dot sizes and shapes, and for arbitrary emission directions. Calculations for typical SAQD geometries with emission along [110] show light that is only 5% circularly polarized for spin states that are 100% polarized along [110]. Measuring along the growth direction gives near unity conversion of spin to photon polarization and is the least sensitive to uncertainties in SAQD geometry." @default.
- W2997112866 created "2020-01-10" @default.
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- W2997112866 date "2003-03-01" @default.
- W2997112866 modified "2023-09-26" @default.
- W2997112866 title "Accuracy of circular polarization as a measure of spin polarization in quantum dot qubits" @default.
- W2997112866 hasPublicationYear "2003" @default.
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