Quantum spin force moves a 128-milligram levitated resonator

Researchers at OIST used a pulsed laser to initialize billions of nitrogen-vacancy defects in diamond, generating a spin force that drove a 128-milligram levitated resonator more than 100 nanometers. The Science Advances paper marks a large jump in mass for spin-driven motion, but the measured movement was a classical mechanical response to a quantum force, not macroscopic quantum superposition.