Observations of Bell Inequality Violations with Causal Isolation between Source and Detectors

Abstract

We report the experimental observations of Bell inequality violations (BIV) in entangled photons causally separated by a rotating mirror. A Foucault mirror gating geometry is used to causally isolate the entangled photon source and detectors. We report an observed BIV of CHSH-S=2.30±0.07>2.00. This result rules out theories that explain correlations with traveling communication between source and detectors, including super-luminal and instantaneous communication.

Keywords

• quantum entanglement
• Bell inequality violations
• measurement loophole
• standing waves