BACKGROUND Levitation of large objects has become a widely used technique in science
and engineering, and the control of levitated nano-and micro-objects in vacuum has gained …

Optomechanics is concerned with the use of light to control mechanical objects. As a field, it
has been hugely successful in the production of precise and novel sensors, the …

Optical tweezers are tools made of light that enable contactless pushing, trap**, and
manipulation of objects, ranging from atoms to space light sails. Since the pioneering work …

Quantum control of complex objects in the regime of large size and mass provides
opportunities for sensing applications and tests of fundamental physics. The realization of …

Quantum metrology is one of the most promising applications of quantum technologies. The
aim of this research field is the estimation of unknown parameters exploiting quantum …

We argue that if the Newtonian gravitational field of a body can mediate entanglement with
another body, then it should also be possible for the body producing the Newtonian field to …

The quantization of gravity is widely believed to result in gravitons–particles of discrete
energy that form gravitational waves. But their detection has so far been considered …

All existing quantum-gravity proposals are extremely hard to test in practice. Quantum effects
in the gravitational field are exceptionally small, unlike those in the electromagnetic field …

Gravity is the weakest of all known fundamental forces and poses some of the most
important open questions to modern physics: it remains resistant to unification within the …

Levitated optomechanics has great potential in precision measurements, thermodynamics,
macroscopic quantum mechanics, and quantum sensing. Here we synthesize and optically …