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Acoustic frequency atomic spin oscillator in the quantum regime

Author

Listed:
  • Jun Jia

    (Niels Bohr Institute, University of Copenhagen)

  • Valeriy Novikov

    (Niels Bohr Institute, University of Copenhagen
    Russian Quantum Center)

  • Tulio Brito Brasil

    (Niels Bohr Institute, University of Copenhagen)

  • Emil Zeuthen

    (Niels Bohr Institute, University of Copenhagen)

  • Jörg Helge Müller

    (Niels Bohr Institute, University of Copenhagen)

  • Eugene S. Polzik

    (Niels Bohr Institute, University of Copenhagen)

Abstract

Quantum noise reduction and entanglement-enhanced sensing in the acoustic frequency range is an outstanding challenge relevant for a number of applications including magnetometry and broadband noise reduction in gravitational wave detectors. Here we experimentally demonstrate quantum behavior of a macroscopic atomic spin oscillator in the acoustic frequency range. Quantum back-action of the spin measurement, ponderomotive squeezing of light, and virtual spring softening are observed at oscillation frequencies down to the sub-kHz range. Quantum noise sources characteristic of spin oscillators operating in the near-DC frequency range are identified and means for their mitigation are presented.

Suggested Citation

  • Jun Jia & Valeriy Novikov & Tulio Brito Brasil & Emil Zeuthen & Jörg Helge Müller & Eugene S. Polzik, 2023. "Acoustic frequency atomic spin oscillator in the quantum regime," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-42059-y
    DOI: 10.1038/s41467-023-42059-y
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    References listed on IDEAS

    as
    1. Onur Hosten & Nils J. Engelsen & Rajiv Krishnakumar & Mark A. Kasevich, 2016. "Measurement noise 100 times lower than the quantum-projection limit using entangled atoms," Nature, Nature, vol. 529(7587), pages 505-508, January.
    2. Tulio Brito Brasil & Valeriy Novikov & Hugo Kerdoncuff & Mikael Lassen & Eugene S. Polzik, 2022. "Two-colour high-purity Einstein-Podolsky-Rosen photonic state," Nature Communications, Nature, vol. 13(1), pages 1-5, December.
    3. Christoffer B. Møller & Rodrigo A. Thomas & Georgios Vasilakis & Emil Zeuthen & Yeghishe Tsaturyan & Mikhail Balabas & Kasper Jensen & Albert Schliesser & Klemens Hammerer & Eugene S. Polzik, 2017. "Quantum back-action-evading measurement of motion in a negative mass reference frame," Nature, Nature, vol. 547(7662), pages 191-195, July.
    4. Jonathan Cripe & Nancy Aggarwal & Robert Lanza & Adam Libson & Robinjeet Singh & Paula Heu & David Follman & Garrett D. Cole & Nergis Mavalvala & Thomas Corbitt, 2019. "Measurement of quantum back action in the audio band at room temperature," Nature, Nature, vol. 568(7752), pages 364-367, April.
    5. Han Bao & Junlei Duan & Shenchao Jin & Xingda Lu & Pengxiong Li & Weizhi Qu & Mingfeng Wang & Irina Novikova & Eugeniy E. Mikhailov & Kai-Feng Zhao & Klaus Mølmer & Heng Shen & Yanhong Xiao, 2020. "Spin squeezing of 1011 atoms by prediction and retrodiction measurements," Nature, Nature, vol. 581(7807), pages 159-163, May.
    6. Brian Julsgaard & Alexander Kozhekin & Eugene S. Polzik, 2001. "Experimental long-lived entanglement of two macroscopic objects," Nature, Nature, vol. 413(6854), pages 400-403, September.
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