Print Email Facebook Twitter Silicon anisotropy in a bi-dimensional optomechanical cavity Title Silicon anisotropy in a bi-dimensional optomechanical cavity Author Kersul, Cauê M. (University of Campinas) Benevides, Rodrigo (External organisation) Moraes, Flávio (University of Campinas) de Aguiar, Gabriel H.M. (University of Campinas) Wallucks, A. (TU Delft QN/Groeblacher Lab; TU Delft QN/Quantum Nanoscience; Kavli institute of nanoscience Delft) Groeblacher, S. (TU Delft QN/Groeblacher Lab; TU Delft QN/Quantum Nanoscience; Kavli institute of nanoscience Delft) Wiederhecker, Gustavo S. (University of Campinas) Mayer Alegre, Thiago P. (University of Campinas) Department QN/Quantum Nanoscience Date 2023 Abstract In this work, we study the effects of mechanical anisotropy in a 2D optomechanical crystal geometry. We fabricate and measure devices with different orientations, showing the dependence of the mechanical spectrum and the optomechanical coupling on the relative angle of the device to the crystallography directions of silicon. Our results show that the device orientation strongly affects its mechanical band structure, which makes the devices more susceptible to orientation fabrication imperfections. Finally, we show that our device is compatible with cryogenic measurements, reaching a ground state occupancy of 0.25 phonons at mK temperature. To reference this document use: http://resolver.tudelft.nl/uuid:968ae3d7-efbb-4729-985d-c75b72e4d5f9 DOI https://doi.org/10.1063/5.0135407 ISSN 2378-0967 Source APL Photonics, 8 (5) Part of collection Institutional Repository Document type journal article Rights © 2023 Cauê M. Kersul, Rodrigo Benevides, Flávio Moraes, Gabriel H.M. de Aguiar, A. Wallucks, S. Groeblacher, Gustavo S. Wiederhecker, Thiago P. Mayer Alegre Files PDF 056112_1_5.0135407.pdf 7.29 MB Close viewer /islandora/object/uuid:968ae3d7-efbb-4729-985d-c75b72e4d5f9/datastream/OBJ/view