In this thesis, the spin states of phosphorus donors in silicon are investigated by electrically detected magnetic resonance in the context of quantum information processing. For the first time
coherent spin motion of the donor spins was observed via spin-dependent recombination using pulsed excitation. Furthermore,
this technique allows to determine dephasing and decoherence times. In silicon nanostructures the detection limit could be reduced to as few as 50 P donors. The influence of strain on the donor wavefunction was investigated in the regime of high strain values and could be quantitatively accounted for by ab initio
calculations.
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In this thesis, the spin states of phosphorus donors in silicon are investigated by electrically detected magnetic resonance in the context of quantum information processing. For the first time
coherent spin motion of the donor spins was observed via spin-dependent recombination using pulsed excitation. Furthermore,
this technique allows to determine dephasing and decoherence times. In silicon nanostructures the detection limit could be reduced to as few as 50 P donors. The influence of strain...
»