Fig. 1: Spin readout using spin-blockade.
From: Electrical readout of spins in the absence of spin blockade
a Anti-symmetric spins allow for the movement of spins, while (b, c) symmetric spins are blockaded, allowing for the two-particle spin states to be distinguished. At increased detuning, SB can be lifted in the presence of either a large spin-orbit interaction (b) or the presence of low-lying excited orbital states of energy δo (c).
