Violation of Locality in Quantum Mechanics is a foundational principle asserting that quantum systems can exhibit correlations between spatially separated components instantaneously, defying the classical axiom that physical interactions propagate strictly at or below the speed of light. This phenomenon challenges Einstein's definition of locality within Special Relativity by demonstrating that measurement outcomes on entangled particles are not determined solely by local variables but depend on global wavefunction configurations defined across spacelike intervals. The concept resides firmly within Quantum Field Theory and Non-local Correlation theory, serving as a critical theoretical pillar for understanding the limits of classical realism and causality in subatomic physics without invoking superluminal information transfer.
Qiskit's 'in the classroom' walkthrough of how Bell's theorem proved Einstein wrong about local realism: entangled particles show correlations that violate Bell's inequality, meaning no theory respec…