Generation of mechanical cat-like states via optomagnomechanics

Abstract

We propose an optomagnomechanical approach for preparing a cat-like superposition state of mechanical motion. Our protocol consists of two steps and is based on the magnomechanical system where the magnetostrictively induced displacement further couples to an optical cavity mode via radiation pressure. We first prepare a squeezed mechanical state by driving the magnomechanical system with two microwave pulses. We then switch off the microwave drives and send a weak red-detuned optical pulse to the optical cavity to weakly activate the optomechanical anti-Stokes scattering. We show that $k$ phonons can be subtracted from the prepared squeezed thermal state, conditioned on the detection of $k$ anti-Stokes photons from the cavity output field, which prepares the mechanical motion in a cat-like state. The work provides a new avenue for preparing mechanical superposition states by combining opto- and magnomechanics and may find applications in the study of macroscopic quantum states and the test of collapse theories.

References in corpus (17)

• Cavity Optomechanics
• Observation of strong coupling between a micromechanical resonator and an optical cavity field
• Negativity of the Wigner function as an indicator of nonclassicality
• Quantum squeezing of motion in a mechanical resonator
• Generation and manipulation of Schrödinger cat states in Rydberg atom arrays
• Generation of a superposition of odd photon number states for quantum information networks
• Schroedinger cat-like states by conditional measurements on a beam-splitter
• Quantum entanglement and teleportation in pulsed cavity-optomechanics
• Deterministic creation of entangled atom-light Schrödinger-cat states
• Nonclassicality and decoherence of photon-subtracted squeezed states
• Schrödinger cat states of a 16-microgram mechanical oscillator
• Cavity magnomechanics: from classical to quantum
• Monocrystalline free standing 3D yttrium iron garnet magnon nano resonators
• Stationary optomagnonic entanglement and magnon-to-optics quantum state transfer via opto-magnomechanics
• Generation and detection of non-Gaussian phonon-added coherent states in optomechanical systems
• Optomechanical generation of a mechanical catlike state by phonon subtraction
• Generation of optomicrowave and optomagnonic entanglements in cascaded optomagnomechanical systems