Allows for numerical time-evolution of single-particle wave functions in arbitrary (time-dependent or -independent) potentials.
This node is comparatively complicated. On each step it will take the state and numerically solve the Schröedinger-equation for the timestep, emitting the updated state. Note, that the Hamiltonian is allowed to be updated between steps, allowing evolution in time-dependent potentials.
In the beginning (or when the reset-button is pressed), the state is set to the input-state.