Fig. 2: Correlated CAR and ECT signals.
From: Triplet correlations in Cooper pair splitters realized in a two-dimensional electron gas
Diagrams of the transport cycles for (a) CAR and (b) ECT. Blue lines indicate the energies of the QD levels required for transport via the ABS at energy ± E. Purple bars mark the energy window in which transport is allowed, corresponding to the marked regions in the measurement panels (c and d). c Charge stability measurement of QDL and QDR with VL = VR = −120 μV taken at VABS = −245 mV. Equal currents with the same sign are observed at the left (IL) and right (IR) leads only when the QD energy levels are anti-aligned, as expected for CAR. d Repeated measurement, but with VL = − VR = −120 μV. Equal currents with opposite sign are observed only when the QDs are aligned in energy, as expected for ECT. The correlated currents Icorr are calculated from IL and IR as described in the main text. Exemplary line traces at VQDR = −375 mV for CAR and ECT are plotted in (e) and (f) respectively.
