Spatial Qubit Entanglement Witness for Quantum Natured Gravity
This work proposes a method to witness gravitational entanglement between two masses using their spatial superpositions as qubits. By performing specific Pauli measurements (z, x, y) at different times relative to a time $\tau$ of gravitational interaction, the protocol aims to detect quantum gravity effects. Success depends on meeting strict squeezing requirements and overcoming constraints imposed by Casimir screening.