Entanglement distillation toward minimal bond cut surface in tensor networks

Abstract

In tensor networks, a geometric operation of pushing a bond cut surface toward a minimal surface corresponds to entanglement distillation. Cutting bonds defines a reduced transition matrix on the bond cut surface and the associated quantum state naturally emerges from it. We justify this picture quantitatively by evaluating the trace distance between the maximally entangled states and the states on bond cut surfaces in the multi-scale entanglement renormalization ansatz (MERA) and matrix product states in a canonical form. Our numerical result for the random MERA is in a reasonable agreement with our proposal. The result sheds new light on a deeper understanding of the Ryu-Takayanagi formula for entanglement entropy in holography and the emergence of geometry from the entanglement structure.

arXiv comment10 pages, 9 figures; title and abstract modified, references and comments including detailed explanations of relevance to previous literature and future directions added, published version in PRD (v2)

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• Timelike entanglement entropy
• SVD Entanglement Entropy
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• Einstein's equations and the pseudo-entropy of pseudo-Riemannian information manifolds
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• Holographic Entanglement Distillation from the Surface State Correspondence