Researchers Detect Entanglement Patterns in 100-Qubit Systems

Mean classification accuracy exceeded ninety-five percent for systems containing up to one hundred qubits, achieved through a new scalable framework developed by multiple Chinese institutions. The method identifies entanglement structures within complex quantum states without needing to reconstruct the entire state itself, representing a key advance over previous techniques. Until now, determining these structures required exponentially increasing measurement effort as system size grew, but this employs just a single measurement configuration regardless of qubit count. A new technique devises…