Quantum vector magnetometer based on the CPT effect in 87Rb vapour

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Developed and characterised for the first time is a quantum vector magnetometer using coherent population trapping (CPT) in 87Rb vapour and external magnetic field compensation by 3-axis Helmholtz coils to stabilize the amplitude and spectral position of the CPT resonance excited on a magneto-sensitive (mf ≠ 0) energy level transition. To measure the magnetic field components orthogonal to the magnetometer optical axis, resonance amplitude dependence upon the transverse field strength is used, which has a maximum at zero transverse field. The proposed approach allowed measurement of the external magnetic field vector with a sensitivity exceeding 500 pT/Hz1/2

Original languageEnglish
Title of host publicationQuantum Communications and Quantum Imaging XVIII
EditorsKeith S. Deacon
ISBN (Electronic)9781510638204
Publication statusPublished - 2020
EventQuantum Communications and Quantum Imaging XVIII 2020 - Virtual, Online, United States
Duration: 24 Aug 20204 Sep 2020

Publication series

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


ConferenceQuantum Communications and Quantum Imaging XVIII 2020
CountryUnited States
CityVirtual, Online


  • Coherent population trapping
  • Magnetometer
  • Rubidium
  • Vector magnetometer


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