Fig. 3
From: Order–disorder phase transitions of phosphorene and their application to adiabatic quantum computing

Adiabatic Quantum Computation (AQC). We can create a set of \(\pi\)-rings that have a magnetic dipole moment upward or downward. We take an analogy of these magnetic dipole moments with spins up and down, shown by black and white. The color of the rings’ borders represents atoms in upper and lower planes with respect to each other, in analogy with puckered-honeycomb structure of phosphorene. By adding an additional current, a magnetic field is created between the \(\pi\)-rings. Thus, the coupling strength between the \(\pi\)-rings can be changed and controlled.