Measurement-based quantum control of mechanical motion

Measurement-based quantum control of mechanical motion

Measurement-based quantum control of mechanical motion, Published online: 31 October 2018; doi:10.1038/s41586-018-0643-8

The displacement of a mechanical resonator is measured to within 35% of the Heisenberg uncertainty limit, enabling feedback cooling to the quantum ground state, nine decibels below the quantum-backaction limit.