Fig. 3: Repeated shuttling experiments.
From: Dephasing and error dynamics affecting a singlet-triplet qubit during coherent spin shuttling
a Pulse sequence diagram for repeated shuttles. A \(\left\vert S\right\rangle\) state is prepared, undergoes shuttling between QD1 and QD2, and then its final spin state is measured. b Cartoon representation of the exchange interaction between QD0 and QD1,2 used to carry out a πz pulse for dynamical decoupling. c Singlet return probability after N shuttles (different colored markers) are executed over a range of time. A fit of the form of Eq. (3) is overlaid (black curve). d Singlet return probability for an experiment similar to (c), but with the dynamical decoupling sequence shown in the inset applied. A fit of the form of Eq. (5) is overlaid (black curve). e Singlet return probability for a \(\left\vert\! \uparrow \downarrow\! \right\rangle\) state after N shuttles executed over time. An exponential decay fit of the form of Eq. (6) is overlaid (black curve). f–h Repeated shuttles carried out at fixed tshuttle corresponding to the colored vertical dashed lines in (c–e), respectively. B0 ≈ 0 mT for the \(\left\vert S\right\rangle\) shuttles (c, d, f, g) and B0 = 10 mT for the \(\left\vert\! \uparrow \downarrow \!\right\rangle\) shuttles (e, h). All error bars shown represent the standard deviation of the mean of the measurement.
