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  • High photon-phonon pair generation rate in a two-dimensional optomechanical crystal. Nature communications Mayor, F. M., Malik, S., Primo, A. G., Gyger, S., Jiang, W., Alegre, T. P., Safavi-Naeini, A. H. 2025; 16 (1): 2576

    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, Qopt = 2.4 × 105, allow ground-state cooling (nm = 0.32) of the acoustic mode from 3 K and entering the optomechanical strong-coupling regime. In pulsed sideband asymmetry measurements, we show ground-state operation (nm < 0.45) at temperatures below 10 mK, with repetition rates up to 3 MHz, generating photon-phonon pairs at  ≈ 147 kHz. Our results extend optomechanical system capabilities and establish a robust foundation for future microwave-to-optical transducers with entanglement rates exceeding state-of-the-art superconducting qubit decoherence rates.

    View details for DOI 10.1038/s41467-025-57948-7

    View details for PubMedID 40089541

    View details for PubMedCentralID PMC11910550

  • Flexible integration of gigahertz nanomechanical resonators with a superconducting microwave resonator using a bonded flip-chip method APPLIED PHYSICS LETTERS Malik, S., Jiang, W., Mayor, F. M., Makihara, T., Safavi-Naeini, A. H. 2023; 123 (10)

    View details for DOI 10.1063/5.0157516

    View details for Web of Science ID 001074765700009

  • Optically heralded microwave photon addition NATURE PHYSICS Jiang, W., Mayor, F. M., Malik, S., Van Laer, R., McKenna, T. P., Patel, R. N., Witmer, J. D., Safavi-Naeini, A. H. 2023

    View details for DOI 10.1038/s41567-023-02129-w

    View details for Web of Science ID 001032623500004

https://orcid.org/0009-0003-6200-2837