Fig. 4: Illustration and experimental results for high-dimensional M×N matrices.
From: High-dimensional non-Abelian holonomy in integrated photonics

a, b A 2 × 3 matrix. a Schematic and mathematical model. b Measured and theoretically predicted matrix elements at 1450 nm. c, d A 5 × 2 matrix. c Schematic and mathematical model. d Measured and theoretically predicted matrix elements at 1450 nm.