Quantum enhanced metrology using 100-photon Fock states

ORAL

Abstract

The potential advantages in quantum metrology are enhanced by increasing the involved excitation numbers of specific nonclassical states, such as Fock states, thus appealing for the generation of large photon-number Fock states. We present an efficient method for generating Fock states containing up to 100 photons within a superconducting microwave cavity through the development of a programmable photon number filter. Quantum-enhanced metrology approaching the Heisenberg scaling for both displacement and phase measurements is achieved, highlighting the metrological power of these highly non-classical states. Our study could be readily extended to mechanical and optical systems, promising potential applications in weak force detection and dark matter search.

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Presenters

  • Xiaowei Deng

    • Southern university of sceince and technology

Authors

  • Xiaowei Deng

    • Southern university of sceince and technology

  • Sai Li

    • International Quantum Academy

  • Zijie Chen

    • University of Science and Technology of China

  • Zhongchu Ni

    • Southern University of Science and Techn

  • Yanyan Cai

    • South University of Science and technology

  • Haifeng Yu

    • Beijing Academy of Quantum Information Sciences

  • Changling Zou

    • University of Science and Technology of China

  • Song Liu

    • Southern University of Science and Technology

  • Fei Yan

    • Beijing Academy of Quantum Information Sciences, Beijing 100193, China
    • Beijing Academy of Quantum Information Sciences
    • Southern University of Science and Technology

  • Yuan Xu

    • Southern University of Science and Technology

  • Dapeng Yu

    • Southern University of Science and Technology
    • SUSTC