Sensitivity of quantum information to environment perturbations measured with a nonlocal out-of-time-order correlation function
Mohamad Niknam, Lea F. Santos, David G. Cory
Abstract
This work shows that by exploring the collective response of a many-body nuclear-spin system, the correlation between various parts of it can be studied. The appearance of the higher correlation orders, as a qubit shares its quantum information with the surrounding qubits, is used to measure quantum information flow.
Topics & Concepts
Statistical physicsSensitivity (control systems)QuantumQuantum discordPhysicsOpen quantum systemCorrelation function (quantum field theory)Quantum correlationMetric (unit)Quantum informationFunction (biology)Quantum mechanicsEngineeringOperations managementEconomicsElectronic engineeringBiologyDielectricEvolutionary biologyQuantum chaos and dynamical systemsAdvanced NMR Techniques and ApplicationsSpectroscopy and Quantum Chemical Studies