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 …

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

Recently, the photon—magnon coherent interaction based on the collective spins excitation
in ferromagnetic materials has been achieved experimentally. Under the prospect, the …

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 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 …

Interaction between light and molecular vibrations leads to hybrid light-matter states called
vibrational polaritons. Even though many intriguing phenomena have been predicted for …

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 …