Researchers Link Network Shape to Qubit Entanglement Decay

A new study from Sougata Bhattacharyya and colleagues at the Indian Institute of Technology Indore, and the Techno India Group, and Tokyo International University reveals how network geometry and excitation sector independently influence the decay of pairwise entanglement in asymmetric multipartite W states, systems where entanglement distributes unevenly between qubits. The team introduced an analytically tractable N-qubit generalisation of an asymmetric geometry, revealing that a ‘vertex-base’ pair maintains noise dependence similar to symmetric references, offering a proportional advantage when entanglement persists. The investigation shows…