In the past 20 years, impressive progress has been made both experimentally and
theoretically in superconducting quantum circuits, which provide a platform for manipulating …

According to quantum mechanics, a harmonic oscillator can never be completely at rest.
Even in the ground state, its position will always have fluctuations, called the zero-point …

Mechanical systems prepared in quantum non-Gaussian states constitute a new advanced
class of phenomena breaking the laws of classical physics. Specifically, such mechanical …

A pair of conjugate observables, such as the quadrature amplitudes of harmonic motion,
have fundamental fluctuations that are bound by the Heisenberg uncertainty relation …

By coupling a macroscopic mechanical oscillator to two microwave cavities, we
simultaneously prepare and monitor a nonclassical steady state of mechanical motion. In …

The robust generation of quantum states in the presence of decoherence is a primary
challenge for explorations of quantum mechanics at larger scales. Using the mechanical …

Hybrid spin-mechanical setups offer a versatile platform for quantum science and
technology, but improving the spin-phonon as well as the spin-spin couplings of such …

We study theoretically a three-mode optomechanical system where two mechanical
oscillators are independently coupled to a single cavity mode. By optimized two-tone or four …

We develop a protocol for learning a class of interacting bosonic Hamiltonians from
dynamics with Heisenberg-limited scaling. For Hamiltonians with an underlying bounded …

We propose a scheme to generate squeezed states of magnon and phonon modes and
verify squeezing transfer between different modes of distinct frequencies in a cavity …