Differential and Common Decoherence Modes in Witnessing the Quantum Gravity-Induced Entanglement of Matter
In the context of the QGEM (Quantum Gravity-induced Entanglement of Masses) experiment, we consider two adjacent matter-wave interferometers in linear and parallel configurations that interact solely via gravity. If gravity were quantum, then the two matter-wave interferometers would become entangled via the virtual ex...