Quantum information processing relies on the precise control of non-classical states in the
presence of many uncontrolled environmental degrees of freedom. The interactions …

It is an open question whether mechanical resonators can be made nonlinear with vibrations
approaching the quantum ground state. This requires the engineering of a mechanical …

We propose to directly and quantum-coherently couple a superconducting transmon qubit to
magnons—the quanta of the collective spin excitations, in a nearby magnetic particle. The …

High quality nanomechanical oscillators are promising platforms for quantum entanglement
and quantum technology with phonons. Realizing coherent transfer of phonons between …

Owing to their strong dipole moment and long coherence times, superconducting qubits
have demonstrated remarkable success in hybrid quantum circuits. However, most qubit …

Quantum battery (QB) is the miniature energy storage and release device and plays a
crucial role in future quantum technology. Here an implementation scheme of a QB is …

The nonlinear component of the optomechanical interaction between light and mechanical
vibration promises many exciting classical and quantum mechanical applications, but is …

Semiconductor microresonators embedding quantum wells can host tightly confined and
mutually interacting excitonic, optical, and mechanical modes at once. We theoretically …

Circuit quantization is an extraordinarily successful theory that describes the behavior of
quantum circuits with high precision. The most widely used approach of circuit quantization …

We demonstrate strong dispersive coupling between a fluxonium superconducting qubit and
a 690 megahertz mechanical oscillator, extending the reach of circuit quantum acousto …