Cavity optomechanical systems enable interactions between light and mechanical
resonators, providing a platform both for fundamental physics of macroscopic quantum …

According to quantum theory the energy exchange between physical systems is quantized.
As a direct consequence, measurement sensitivities are fundamentally limited by …

Quantum metrology is one of the most promising applications of quantum technologies. The
aim of this research field is the estimation of unknown parameters exploiting quantum …

The field of cavity optomechanics is reviewed. This field explores the interaction between
electromagnetic radiation and nanomechanical or micromechanical motion. This review …

Quantum states of mechanical motion can be important resources for quantum information,
metrology and studies of fundamental physics. Recent demonstrations of superconducting …

By exploiting recent developments associated with coupled microcavities, we introduce the
concept of the PT-symmetric phonon laser with balanced gain and loss. This is …

When two physical systems share the quantum property of entanglement, measurements of
one system appear to determine the state of the other. This peculiar property is used in …

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

Quantum mechanics dictates that the precision of physical measurements must always
comply with certain noise constraints. In the case of interferometric displacement …

Squeezed light generation has come of age. Significant advances on squeezed light
generation have been made over the last 30 years—from the initial, conceptual experiment …