Nonlinear optomechanical paddle nanocavities

Abstract

Nonlinear optomechanical coupling is the basis for many potential future experiments in quantum optomechanics (e.g., quantum non-demolition measurements, preparation of non-classical states), which to date have been difficult to realize due to small non-linearity in typical optomechanical devices. Here we introduce an optomechanical system combining strong nonlinear optomechanical coupling, low mass and large optical mode spacing. This nanoscale "paddle nanocavity" supports mechanical resonances with hundreds of fg mass which couple nonlinearly to optical modes with a quadratic optomechanical coupling coefficient $g^{(2)}>2\pi \times 400$ MHz/nm${}^2$, and a two phonon to single photon optomechanical coupling rate $\Delta {\omega }_0>2\pi \times 16$ Hz. This coupling relies on strong phonon-photon interactions in a structure whose optical mode spectrum is highly non--degenerate. Nonlinear optomechanical readout of thermally driven motion in these devices should be observable for T $>50$ mK, and measurement of phonon shot noise is achievable. This shows that strong nonlinear effects can be realized without relying on coupling between nearly degenerate optical modes, thus avoiding parasitic linear coupling present in two mode systems.

8 pages, 5 figures

References in corpus (8)

• Strong dispersive coupling of a high finesse cavity to a micromechanical membrane
• Dispersive optomechanics: a membrane inside a cavity
• Photonic Crystal Nanobeam Cavity Strongly Coupled to the Feeding Waveguide
• Cooling and squeezing via quadratic optomechanical coupling
• Optomechanical trapping and cooling of partially transparent mirrors
• Standard Quantum Limit for Probing Mechanical Energy Quantization
• Femtogram Doubly Clamped Nanomechanical Resonators Embedded in a High-Q Two-Dimensional Photonic Crystal Nanocavity
• Nonlinear Power Spectral Densities for the Harmonic Oscillator

Cited by in corpus (23)

• Nonlinear cavity optomechanics with nanomechanical thermal fluctuations
• Position-squared coupling in a tunable photonic crystal optomechanical cavity
• Design of a quasi-2D photonic crystal optomechanical cavity with tunable, large $x^2$-coupling
• Quantum backaction and noise interference in asymmetric two-cavity optomechanical systems
• Mechanical oscillator thermometry in the nonlinear optomechanical regime
• Degenerate parametric oscillation in quantum membrane optomechanics
• Phonon Quantum Nondemolition Measurements in Nonlinearly Coupled Optomechanical Cavities
• Probing of nonlinear hybrid optomechanical systems via partial accessibility
• Quadratic optomechanical cooling of a cavity-levitated nanosphere
• Anti-parity-time symmetry hidden in a damping linear resonator
• Nonlinear Power Spectral Densities for the Harmonic Oscillator
• Nanomechanical test of quantum linearity
• Injection locking of optomechanical oscillators via acoustic waves
• Comparing nonlinear optomechanical coupling in membrane-in-the-middle and single-cavity optomechanical systems
• Dissipative phonon Fock state production in strong nonlinear optomechanics
• Enabling entanglement distillation via optomechanics
• Squeezing of the mechanical motion and beating 3 dB limit using dispersive optomechanical interactions
• Design and experimental demonstration of optomechanical paddle nanocavities
• Corrections to the Optomechanical Hamiltonian from Quadratic Fluctuations of a Moving Mirror
• Mimicking a hybrid-optomechanical system using an intrinsic quadratic coupling in conventional optomechanical system
• Highly sensitive temperature sensing via quadratic optomechanical coupling
• Route to hyperchaos in quadratic optomechanics
• Electromagnetic Continuum Induced Nonlinearity