Extended Data Fig. 6: Numerical simulations and comparison measurements on the impact of the residual exchange.

a,b Numerical simulations corresponding to Fig. 3c in the main text. In both cases, the state is prepared and measured along \(\left\vert \widetilde{{\downarrow }^{+}{\uparrow }^{-}}\right\rangle\). a Simulation assuming Jr = 0 and η = 0. b Simulation assuming Jr=0.5 MHz and η=0.0167. c,d Measurements corresponding to Figs. 3e,f in the main text, taken in a separate cooldown where the device was tuned differently. e,f Same measurements as in c and d, respectively, but conducted with a voltage pulse of -30 mV applied to the barrier gate between the two quantum dots. The feature visible in c and d near ϵ=26 mV vanishes.