Holographic Entanglement Entropy (2D)

This is the flat 2D sibling of the 3D holographic tensor-network simulator: the same MERA-style binary tree of entangled bulk nodes above a ring of boundary qubits, drawn here as a radial Poincaré-disk-style diagram you pan and zoom instead of orbit. It computes the exact entanglement entropy of any contiguous boundary region as a discrete Ryu–Takayanagi surface — the minimal set of bulk bonds you must sever to disconnect that region from the rest — found with a genuine Edmonds–Karp max-flow / min-cut computation rather than an approximation. Pick the region's size and position, change the network's depth or bond dimension, and watch the cut (in red) reshape itself while the live entropy readout tracks it exactly.