Represents a compilation of a target 2-qubit with respect to a base gate.

This object encodes the relationship between 4x4 unitary operators

U_target ~ k_N · Ubase · k{N-1} · ... · k_1 · U_base · k_0

where U_target, U_base are 2-local and k_j are 1-local.


target_gate 4x4 unitary denoting Utarget above.
local_unitaries Sequence of 2-tuples (k{00},k{01}),(k{10},k_{11})... where kj = k{j0} ⊗ k{j1} in the product above. Each k{j0}, k_{j1} is a 2x2 unitary.
actual_gate 4x4 unitary denoting the right hand side above, ideally equal to U_target.
success Whether actual_gate is expected to be close to U_target.
base_gate 4x4 unitary denoting U_base above.