Fig. 1
From: Coherent long-distance displacement of individual electron spins
Triple dot system in a circular geometry. a Scanning electron microscope image of the circular triple dot sample. The position of the dots is shown in white dashed circles. The voltages applied on the green (V M,1, V M,2, V M,3), red (V T,1, V T,2, V T,3) and blue gates (V B,1, V B,2, V B,3) allow to predominantly control the coupling between the dots, the coupling to the reservoirs and the dot-chemical potentials, respectively. The purple gates are used to define sensing dots to probe, with I QPC,1, I QPC,2 and I QPC,3, the charge configuration of the triple-dot system. Electron loading and spin read-out are realized in the bottom dot. A magnetic field B is applied perpendicular to the sample. Scale bar is 300 nm. b Derivative δI QPC,3 of I QPC,3 along V B,1 when the system is scanned in the two-electron isolated configuration with the gates V B,1 and V B,2. The label (N 1, N 2, N 3) corresponds to the number of electrons in the bottom, top left and top right dots, respectively
