Gigahertz-frequency Lamb wave resonator cavities on suspended lithium niobate for quantum acoustics
arXiv:2601.13509 · doi:10.1103/xt9r-h1q9
Abstract
Phononic nanodevices offer a promising route toward quantum technologies, as phonons combine strong confinement within matter with broad coupling capabilities to various quantum systems. In particular, the piezoelectric response of materials such as lithium niobate enables coupling between superconducting qubits and gigahertz-frequency phonons. However, bulk lithium niobate phononic devices typically rely on surface acoustic waves and are therefore inherently subject to leakage from the surface into the bulk substrate. Here, we explore the acoustic behavior of resonator cavities supporting GHz-frequency Lamb waves in a 200 nm-thick suspended lithium niobate layer. We characterize the acoustic response at both room and millikelvin temperatures. We find that our resonator cavities with strong confinement reach intrinsic quality factors of approximately 6000 at the single phonon level. We use the measured parameters of the resonators to model their coupling to a superconducting transmon qubit, allowing us to evaluate their potential as quantum acoustic devices.
arXiv comment9 pages, 5 figures
References in corpus (28)
- Qubit architecture with high coherence and fast tunable coupling
- Propagating phonons coupled to an artificial atom
- Quantum transduction of optical photons from a superconducting qubit
- Planar Superconducting Resonators with Internal Quality Factors above One Million
- Non-classical correlations between single photons and phonons from a mechanical oscillator
- Quantum control of surface acoustic wave phonons
- Resolved sidebands in a strain-coupled hybrid spin-oscillator system
- Phonon-mediated quantum state transfer and remote qubit entanglement
- Phononic bandgap nano-acoustic cavity with ultralong phonon lifetime
- Universal Quantum Transducers based on Surface Acoustic Waves
- Probing spin-phonon interactions in silicon carbide with Gaussian acoustics
- Microwave-to-optical conversion using lithium niobate thin-film acoustic resonators
- Resolving the energy levels of a nanomechanical oscillator
- Quantum state preparation, tomography, and entanglement of mechanical oscillators
- Surface acoustic wave resonators in the quantum regime
- Developing a platform for linear mechanical quantum computing
- Surface acoustic wave devices on bulk ZnO at low temperature
- Quantum communication with itinerant surface acoustic wave phonons
- Acousto-optic modulation of a photonic crystal nanocavity with Lamb waves in microwave K band
- Prospects for quantum acoustics with phononic crystal devices
- Hybrid integration of silicon photonic devices on lithium niobate for optomechanical wavelength conversion
- Surface acoustic wave resonators on thin film piezoelectric substrates in the quantum regime
- Measurements of a quantum bulk acoustic resonator using a superconducting qubit
- Deterministic multi-phonon entanglement between two mechanical resonators on separate substrates
- Mechanical Purcell Filters for Microwave Quantum Machines
- Piezo-optomechanical signal transduction using Lamb wave supermodes in a suspended Gallium Arsenide photonic integrated circuits platform
- Deployable Nanoelectromechanical Bound States in the Continuum Enabled by GHz Lamb Wave Phononic Crystals on LiNbO3 Thin Films
- Approaching optimal microwave-acoustic transduction on lithium niobate using SQUID arrays