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Image for: NATURE: A new step towards quantum computers


The diagrams show how the spin "wavers" (oscillation shown at top) in relation to time following an alignment laser pulse. One oscillation period corresponds to one complete "waver" rotation. As anticipated, the strength (amplitude) of all red curves decreases with time. After 1.2 nanoseconds (ns) a laser control pulse is irradiated to suddenly change the alignment of the spin, indicated by the phase of blue and finally green curves: It is precisely the counter-phase to the black curve at the bottom, recorded without control pulse. Moreover this waver builds up in the counter-phase at 2.4 ns, so that the signal is particularly high here, significantly facilitating readout.
The diagrams show how the spin "wavers" (oscillation shown at top) in relation to time following an alignment laser pulse. One oscillation period corresponds to one complete "waver" rotation. As anticipated, the strength (amplitude) of all red curves decreases with time. After 1.2 nanoseconds (ns) a laser control pulse is irradiated to suddenly change the alignment of the spin, indicated by the phase of blue and finally green curves: It is precisely the counter-phase to the black curve at the bottom, recorded without control pulse. Moreover this waver builds up in the counter-phase at 2.4 ns, so that the signal is particularly high here, significantly facilitating readout.

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