Amplifying Two-Mode Squeezing in Nanomechanical Resonators
arXiv:2508.18972 · doi:10.1109/TQE.2025.3603459
Abstract
Quantum squeezing plays a crucial role in enhancing the precision of quantum metrology and improving the efficiency of quantum information processing protocols. We thus propose a scheme to amplify two-mode squeezing in nanomechanical resonators, harnessing parametric amplification and two-tone laser controls. The red-detuned laser drives facilitate the cooling of the nanomechanical resonators down to their ground state and allow optimal quantum state transfer in the weak-coupling, resolved sideband regime. In particular, the competing blue-detuned lasers in the driving pairs induce displacement squeezing in mechanical resonators. Thus, the quantum state transfer of the squeezing in nanomechanical resonators and the intracavity correlated photons of the parametric amplifier significantly enhance the two-mode mechanical squeezing. Notably, increasing the coupling strength of the red detuned laser and the ratio of blue-to-red detuned laser dramatically amplifies the two-mode mechanical squeezing under realistic experiment parameters of a typical optomechanical system. Our findings reveal that the proposed cooperative mechanism effectively enhances the level of two-mode mechanical squeezing with a considerable improvement and demonstrates exceptional resilience to thermal noise.
14 pages, 9 figures, to appear in IEEE Transactions on Quantum Engineering
References in corpus (11)
- Sideband Cooling Micromechanical Motion to the Quantum Ground State
- Optomechanical entanglement between a movable mirror and a cavity field
- Robust entanglement of a micromechanical resonator with output optical fields
- Steady-state Mechanical Squeezing in an Optomechanical System via Duffing Nonlinearity
- Two-mode squeezed states in cavity optomechanics via engineering of a single reservoir
- Cavity-assisted squeezing of a mechanical oscillator
- Strong mechanical squeezing in a standard optomechanical system by pump modulation
- Cavity-induced mirror-mirror entanglement in a single-atom Raman laser
- Entanglement and squeezing of continuous-wave stationary light
- Large mechanical squeezing beyond 3dB of hybrid atom-optomechanical systems in highly unresolved sideband regime
- Generation of strong mechanical squeezing through the joint effect of two-tone driving and parametric pumping