Optomechanical coupling between two optical cavities: Cooling of a micro-mirror and parametric normal mode splitting |
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| Authors: | Tarun Kumar Aranya B Bhattacherjee |
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| Institution: | 1. Department of Physics and Astrophysics, University of Delhi, Delhi-110007, India;2. Department of Physics, ARSD College, University of Delhi (South Campus), New Delhi-110021, India;1. Technological and Educational Institute of Western Greece, Megalou Alexandrou 1, Patras 263 34, Greece;2. Department of Physics, School of Natural Sciences, University of Patras, Patras 265 04, Greece;3. Materials Science Department, School of Natural Sciences, University of Patras, Patras 265 04, Greece;1. State Key laboratory of Luminescence and Application, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, PR China;2. College of Physics, Northeast Normal University, Changchun 130023, PR China;1. IDMEC, Instituto Superior Técnico, Universidade de Lisboa, Portugal;2. Instituto Superior Técnico, Universidade de Lisboa, Portugal;1. Young Researchers and Elite Club, Mashhad Branch, Islamic Azad University, Mashhad, Iran;2. Department of Physics, University of Zanjan, University Blvd, 45371-38791 Zanjan, Iran;3. Research Institute for Applied Physics and Astronomy, University of Tabriz, 51665-163 Tabriz, Iran |
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| Abstract: | We propose a technique aimed at cooling a harmonically oscillating mirror mechanically coupled to another vibrating mirror to its quantum mechanical ground state. Our method involves optomechanical coupling between two optical cavities. We show that the cooling can be controlled by the mechanical coupling strength between the two movable mirrors, the phase difference between the mechanical modes of the two oscillating mirrors and the photon number in each cavity. We also show that both mechanical and optical cooling can be achieved by transferring energy from one cavity to the other. We also analyze the occurrence of normal-mode splitting (NMS). We find that a hybridization of the two oscillating mirrors with the fluctuations of the two driving optical fields occurs and leads to a splitting of the mechanical and optical fluctuation spectra. |
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