Figure 3
Different types of trajectories for the vibration of the H2 molecule. All trajectories are plotted in the phase space (momentum vs coordinate): (A) in the low-energy regime of nearly harmonic motion, (B) in the high-energy regime of strongly anharmonic motion, and (C) at an energy above the dissociation threshold that leads to bond breaking. The exact analytical solution (dashed black), a classical QP solution (dashed magenta) and solutions obtained using the D-Wave quantum annealer with (blue) and without (red) greedy postprocessing are presented for each case.
