Give terms from Hamiltonian in dictionary output order.
hamiltonian (FermionOperator): The Hamiltonian.
A list of terms from the Hamiltonian in simulated order.
Assumes the Hamiltonian is in the form discussed in Kivlichan
et al., "Quantum Simulation of Electronic Structure with Linear
Depth and Connectivity", arxiv:1711.04789. This constrains the
Hamiltonian to have only hopping terms (i^ j + j^ i) and potential
terms which are products of at most two number operators (n_i or