Quantum entanglement is a phenomenon whereby systems cannot be described
independently of each other, even though they may be separated by an arbitrarily large …

Quantum mechanics sets a limit for the precision of continuous measurement of the position
of an oscillator. We show how it is possible to measure an oscillator without quantum back …

Quantum entanglement of mechanical systems emerges when distinct objects move with
such a high degree of correlation that they can no longer be described separately. Although …

Quantum states encoded in microwave photons or qubits can be effectively manipulated,
whereas optical photons can be coherently transferred via optical fibre and waveguide. The …

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

Recent advances on optical control of mechanical motion in an optomechanical resonator
have stimulated strong interests in exploring quantum behaviors of otherwise classical …

We discuss how large amounts of steady-state quantum squeezing (beyond 3 dB) of a
mechanical resonator can be obtained by driving an optomechanical cavity with two control …

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 present exact results for the steady-state density matrix of a general class of driven-
dissipative systems consisting of a nonlinear Kerr resonator in the presence of both coherent …