Journal
OPTICS EXPRESS
Volume 31, Issue 14, Pages 22470-22480Publisher
Optica Publishing Group
DOI: 10.1364/OE.487467
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Optomechanical cavities are powerful tools for information processing, and we have developed a semiconductor-on-diamond platform that co-localizes phononic and photonic modes without requiring undercutting. We designed an optomechanical crystal cavity with high optomechanical coupling and low dissipation, showing promise for quantum information processing devices based on spin, phonon, and photon interactions.
Optomechanical cavities are powerful tools for classical and quantum information processing that can be realized using nanophotonic structures that co-localize optical and mechanical resonances. Typically, phononic localization requires suspended devices that forbid vertical leakage of mechanical energy. Achieving this in some promising quantum photonic materials such as diamond requires non-standard nanofabrication techniques, while hindering integration with other components and exacerbating heating related challenges. As an alternative, we have developed a semiconductor-on-diamond platform that co-localizes phononic and photonic modes without requiring undercutting. We have designed an optomechanical crystal cavity that combines high optomechanical coupling with low dissipation, and we show that this platform will enable optomechanical coupling to spin qubits in the diamond substrate. These properties demonstrate the promise of this platform for realizing quantum information processing devices based on spin, phonon, and photon interactions.
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