The state of the system was determined by globally fitting the data for a range of values of 𝑃 =>?6 , with the lowest cost solution occurring at 𝑃 =>?6 = 0.42. The pseudo-fidelity of the entanglement and tomography combined can be calculated by comparing the deviation density matrices, which we accomplish by treating the expectation values of the non-identity Cartesian product operators as vectors in the generalised Bloch sphere. In this representation the similarity between two states can be thought of as the angle between them, and we use the cosine of this angle to define the pseudo-fidelity: