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  • 2015 European Conference on Lasers and Electro-Optics - European Quantum Electronics Conference
  • (Optica Publishing Group, 2015),
  • paper CK_10_4

Tunable GHz optomechanical crystals

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Abstract

Optomechanical crystals [1] are periodic dielectric and elastic materials in which a strong coupling between optical and acoustic waves exists via radiation pressure. Thin film optomechanical crystals, for instance, can be formed in the device layer of wafers such as silicon-on-insulator (SOI), enabling large scale integration of photonic and phononic circuits using conventional microfabrication techniques. In addition to classical photon-phonon microwave signal processing, such circuits have been proposed for quantum information processing tasks as well as a means for realizing synthetic quantum many-body systems [2,3]. Such coupled optomechanical (OM) systems require flexible building blocks that are able to compensate for errors and non-idealities in the fabrication process. In particular, the coupling of arrays of mechanical modes remains difficult due to the current lack of effective techniques for tuning of the mechanics. Here we propose, design, and optimize a suspended silicon nanobeam optomechanical cavity that features a GHz acoustic mode with an electrostatically adjustable frequency.

© 2015 IEEE

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