• Photonics Research
  • Vol. 9, Issue 7, 1344 (2021)
Yuanbin Jin1、2, Jiangwei Yan1、2, Shah Jee Rahman1、2, Jie Li3, Xudong Yu1、2、4、*, and Jing Zhang1、5、*
Author Affiliations
  • 1State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China
  • 2Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
  • 3Zhejiang Province Key Laboratory of Quantum Technology and Device, Department of Physics and State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027, China
  • 4e-mail: jiance_yu@sxu.edu.cn
  • 5e-mail: jzhang74@sxu.edu.cn
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    DOI: 10.1364/PRJ.422975 Cite this Article Set citation alerts
    Yuanbin Jin, Jiangwei Yan, Shah Jee Rahman, Jie Li, Xudong Yu, Jing Zhang, "6 GHz hyperfast rotation of an optically levitated nanoparticle in vacuum," Photonics Res. 9, 1344 (2021) Copy Citation Text show less

    Abstract

    We report an experimental observation of a record-breaking ultrahigh rotation frequency about 6 GHz in an optically levitated nanoparticle system. We optically trap a nanoparticle in the gravity direction with a high numerical aperture (NA) objective lens, which shows significant advantages in compensating the influences of the scattering force and the photophoretic force on the trap, especially at intermediate pressure (about 100 Pa). This allows us to trap a nanoparticle from atmospheric to low pressure (10-3 Pa) without using feedback cooling. We measure a highest rotation frequency about 4.3 GHz of the trapped nanoparticle without feedback cooling and a 6 GHz rotation with feedback cooling, which is the fastest mechanical rotation ever reported to date. Our work provides useful guides for efficiently observing hyperfast rotation in the optical levitation system and may find various applications such as in ultra-sensitive torque detection, probing vacuum friction, and testing unconventional decoherence theories.
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    Yuanbin Jin, Jiangwei Yan, Shah Jee Rahman, Jie Li, Xudong Yu, Jing Zhang, "6 GHz hyperfast rotation of an optically levitated nanoparticle in vacuum," Photonics Res. 9, 1344 (2021)
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