Radio-frequency communication systems have long used bulk-and surface-acoustic-wave
devices supporting ultrasonic mechanical waves to manipulate and sense signals. These …

One of the hallmarks of quantum physics is the generation of non-classical quantum states
and superpositions, which has been demonstrated in several quantum systems, including …

Coherently displaced number states of a harmonically bound ion can be coupled to two
internal states of the ion by a laser-induced motional sideband interaction. The internal …

The field of quantum cavity optomechanics is fueled by the development of highperformance
micro-and nanofabricated devices. These devices aim to enhance the interaction between …

Acoustic phonons, the energy eigenstates of mechanical vibrations, possess a plethora of
interesting features for quantum information processing. For example, they can serve as …

Figure 1: Measuring the number of phonons, or “sound quanta,” in a mechanical oscillator
(left) can be done by connecting it to a superconducting qubit (right), as demonstrated in two …