Quantum information spreading via higher-order operator correlators

Researchers introduce N-Operator Correlators (NOC), a generalized extension of Out-of-Time-Ordered Correlators, to better measure quantum information spreading by incorporating multiple measurement probes rather than just two operators. The approach is demonstrated on analytically tractable quantum systems including a single qubit and a two-qubit XYZ system, showing how higher-order correlators can provide a more comprehensive analysis of information dynamics in quantum mechanics.