High photon-phonon pair generation rate in a two-dimensional optomechanical crystal.

ABSTRACT: Integrated optomechanical systems are a leading platform for manipulating, sensing, and distributing quantum information, but are limited by residual optical heating. Here, we demonstrate a two-dimensional optomechanical crystal (OMC) geometry with increased thermal anchoring and a mechanical mode at 7.4 GHz, well aligned with the operation range of cryogenic microwave hardware and piezoelectric transducers. The eight times better thermalization than current one-dimensional OMCs, large optomechanical coupling rates, g₀/2π  ≈  880 kHz, and high optical quality factors, Q_opt = 2.4 × 10⁵, allow ground-state cooling (n_m = 0.32) of the acoustic mode from 3 K and entering the optomechanical strong-coupling regime. In pulsed sideband asymmetry measureme

SUBMITTER: Mayor FM 

PROVIDER: S-EPMC11910550 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature