In the last couple of years, it has become possible to cool levitated dielectric particles to the ground-state of an optical potential, opening the possibility of performing quantum experiments with solid objects made out of billions of atoms.
In this talk, I will outline what we can learn about physics by controlling massive objects at the quantum level. I will introduce research from my group aiming to exploit the rotation of silicon nano-cylinders for quantum and classical sensing applications, and the potential to build a network of quantum circuits interfaced by charged microparticles.