Allows for numerical time-evolution of single-particle wave functions in arbitrary (time-dependent or -independent) potentials.
This node is comparatively complicated. It works similarly to the Time Dimension in that it does not update when its inputs get updated, but only when the start-button is pressed. On each step it will take the state and numerically solve the schroedinger-equation for the timestep, emitting the updated state and the corresponding updated time. Note, that the Hamiltonian is allowed to be updated between steps, allowing evolution in time-dependent potentials. The time-dependent potential should use the t-output of this node as its input in that case. This is the only place in the composer where nodes are allowed to be connected in a loop!
In the beginning (or when the reset-button is pressed), the state is set to the input-state.