Conductance quantization is typically measured using a four-terminal setup where a small voltage is applied across a nanostructure, and the resulting current is measured. The conductance is then calculated using Ohm's law. The quantization manifests as plateaus in the conductance versus gate voltage plot, with each plateau corresponding to an integer multiple of the conductance quantum, G0 = 2e2/h, where e is the electron charge and h is Planck's constant.
