UCC === .. currentmodule:: qiskit_fermions.circuit.library .. autoclass:: UCC :show-inheritance: :no-members: :no-inherited-members: :special-members: .. rubric:: Attributes .. autoattribute:: antisymmetric .. autoattribute:: t1 .. autoattribute:: t2 .. autoattribute:: norb .. rubric:: Methods .. automethod:: cluster_operator .. automethod:: from_parameters .. automethod:: from_t_amplitudes .. automethod:: num_parameters .. automethod:: to_parameters .. rubric:: Protocol Methods .. automethod:: _apply_unitary_placed_