A two-dimensional optomechanical crystal for quantum transduction

[2406.14484] A two-dimensional optomechanical crystal for quantum transduction Skip to main content Search Submit Donate Log in Search arXiv Press Enter to search · Advanced search Quantum Physics arXiv:2406.14484 (quant-ph) [Submitted on 20 Jun 2024] Title: A two-dimensional optomechanical crystal for quantum transduction Authors: Felix M. Mayor , Sultan Malik , André G. Primo , Samuel Gyger , Wentao Jiang , Thiago P. M. Alegre , Amir H. Safavi-Naeini View a PDF of the paper titled A two-dimensional optomechanical crystal for quantum transduction, by Felix M. Mayor and 6 other authors View PDF HTML (experimental) Abstract: Integrated optomechanical systems are one of the leading platforms for manipulating, sensing, and distributing quantum information. The temperature increase due to residual optical absorption sets the ultimate limit on performance for these applications. In this work, we demonstrate a two-dimensional optomechanical crystal geometry, named \textbf{b-dagger}, that alleviates this problem through increased thermal anchoring to the surrounding material. Our mechanical mode operates at 7.4 GHz, well within the operation range of standard cryogenic microwave hardware and piezoelectric transducers. The enhanced thermalization combined with the large optomechanical coupling rates, $g_0/2\pi \approx 880~\mathrm{kHz}$, and high optical quality factors, $Q_\text{opt} = 2.4 \times 10^5$, enables the ground-state cooling of the acoustic mode to phononic occupancies as low as $n_\text{m} = 0.35$ from an initial temperature of 3 kelvin, as well as entering the optomechanical strong-coupling regime. Finally, we perform pulsed sideband asymmetry of our devices at a temperature below 10 millikelvin and demonstrate ground-state operation ($n_\text{m} < 0.45$) for repetition rates as high as 3 MHz. Our results extend the boundaries of optomechanical system capabilities and establish a robust foundation for the next generation of microwave-to-optical transducers with entanglement rates overcoming the decoherence rates of state-of-the-art superconducting qubits. Comments: 13 pages, 4 main figures Subjects: Quantum Physics (quant-ph) ; Optics (physics.optics) Cite as: arXiv:2406.14484 [quant-ph] (or arXiv:2406.14484v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2406.14484 Focus to learn more arXiv-issued DOI via DataCite Journal reference: Nature Communications volume 16, Article number: 2576 (2025) Related DOI : https://doi.org/10.1038/s41467-025-57948-7 Focus to learn more DOI(s) linking to related resources Submission history From: Amir H. Safavi-Naeini [ view email ] [v1] Thu, 20 Jun 2024 16:47:13 UTC (6,241 KB) Full-text links: Access Paper: View a PDF of the paper titled A two-dimensional optomechanical crystal for quantum transduction, by Felix M. 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