Print Email Facebook Twitter Coherent feedback in optomechanical systems in the sideband-unresolved regime Title Coherent feedback in optomechanical systems in the sideband-unresolved regime Author Guo, J. (TU Delft QN/Groeblacher Lab) Groeblacher, S. (TU Delft QN/Groeblacher Lab) Date 2022 Abstract Preparing macroscopic mechanical resonators close to their motional quantum groundstate and generating entanglement with light offers great opportunities in studying fundamental physics and in developing a new generation of quantum applications. Here we propose an experimentally interesting scheme, which is particularly well suited for systems in the sideband-unresolved regime, based on coherent feedback with linear, passive optical components to achieve groundstate cooling and photon-phonon entanglement generation with optomechanical devices. We find that, by introducing an additional passive element – either a narrow linewidth cavity or a mirror with a delay line – an optomechanical system in the deeply sideband-unresolved regime will exhibit dynamics similar to one that is sideband-resolved. With this new approach, the experimental realization of groundstate cooling and optomechanical entanglement is well within reach of current integrated state-of-the-art high-Q mechanical resonators. Subject OA-Fund TU Delft To reference this document use: http://resolver.tudelft.nl/uuid:c42fa02b-d8c6-4e11-8420-7738ca61e4bf DOI https://doi.org/10.22331/Q-2022-11-03-848 Publisher ArXiv Volume 6 Series QUANTUM, 2521-327X Part of collection Institutional Repository Document type working paper Rights © 2022 J. Guo, S. Groeblacher Files PDF q_2022_11_03_848.pdf 3 MB Close viewer /islandora/object/uuid:c42fa02b-d8c6-4e11-8420-7738ca61e4bf/datastream/OBJ/view