Fig. 5: Distribution of qudit entanglement.
From: Empowering a qudit-based quantum processor by traversing the dual bosonic ladder

Measured populations of (a) Q1-Q2 Bell3 state, (b) Q1-Q3 Bell3 state, (c) Q1-Q4 Bell3 state, (d) Q1-Q2-Q3 GHZ3 state, and (e) Q1-Q2-Q3-Q4 GHZ3 state. (f) Density matrix of the four-qudit GHZ3 state. The raw and purified fidelities are 70.6% and 82.7%, respectively.