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Effect of cell temperature on the bias magnetic sensitivity of an atomic spin co-magnetometer

  • Beihang University
  • Beijing Academy of Quantum Information Sciences

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The atomic spin co-magnetometer operating in the spin-exchange relaxation-free regime is a promising rotation sensor for its ultrahigh sensitivity to inertial forces. However, it was found that the bias magnetic sensitivity (BMS) of the comagnetometer was much larger than theoretically expected, making magnetic noise a dominant error. This paper reports on the experimental results of the effect of cell temperature on the BMS. It is found that the BMS increases rapidly as the cell temperature rises. This is attributed to the polarization gradient of atomic spins induced by the absorption of the pump beam by the atoms. The experiments and theory reveal that a high-power laser source for pumping is essential for the suppression of BMS and the improvement of bandwidth in the co-magnetometer.

Original languageEnglish
Title of host publicationAOPC 2020
Subtitle of host publicationOptoelectronics and Nanophotonics; and Quantum Information Technology
EditorsJianyu Wang, Zhiping Zhou, Chaoyang Lu, Lixing You, Changjun Min, Haiqing Song, Guixin Li
PublisherSPIE
ISBN (Electronic)9781510639492
DOIs
StatePublished - 2020
Event2020 Applied Optics and Photonics China: Optoelectronics and Nanophotonics; and Quantum Information Technology, AOPC 2020 - Beijing, China
Duration: 30 Nov 2020 → …

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11564
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference2020 Applied Optics and Photonics China: Optoelectronics and Nanophotonics; and Quantum Information Technology, AOPC 2020
Country/TerritoryChina
CityBeijing
Period30/11/20 → …

Keywords

  • Bias magnetic sensitivity
  • Cell temperature
  • Co-magnetometer
  • Polarization gradient

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