Tobias Donner

TL;DR: Sideband cooling of an approximately 10-MHz micromechanical oscillator to the quantum ground state is demonstrated and the device exhibits strong coupling, allowing coherent exchange of microwave photons and mechanical phonons.

TL;DR: In this article, a microwave cavity optomechanical system was realized by coupling the motion of an aluminum membrane to the resonance frequency of a superconducting circuit, and damping and cooling the membrane motion with radiation pressure forces.

TL;DR: A conceptually new regime of cavity QED is achieved, in which all atoms occupy a single mode of a matter-wave field and couple identically to the light field, sharing a single excitation, which opens possibilities ranging from quantum communication to a wealth of new phenomena that can be expected in the many-body physics of quantum gases with cavity-mediated interactions.

TL;DR: In this article, a cavity optomechanical system in which a collective density excitation of a Bose-Einstein condensate serves as the mechanical oscillator coupled to the cavity field is presented.

TL;DR: The realization of a supersolid with continuous translational symmetry breaking along one direction in a quantum gas is reported, providing a route to creating and studying glassy many-body systems with controllably lifted ground-state degeneracies, such as supersolids in the presence of disorder.