The powerful light field manipulation capability of metasurfaces offers a novel development perspective for the quantum precision measurement.By applying the phasegradient metasurface(PGM)to atomic magnetometers(AMs),...The powerful light field manipulation capability of metasurfaces offers a novel development perspective for the quantum precision measurement.By applying the phasegradient metasurface(PGM)to atomic magnetometers(AMs),we have proposed and experimentally demonstrated a new type of compact single-beam elliptically polarized atomic magnetometers(EPAMs).Employing the fabricated chiral beam splitter PGM with high cross-polarization transmittance,a new atomic spin chirality detection method was devised,enabling the ultra-high sensitivity for extremely weak magnetic field measurement and achieving a high sensitivity of 2.67 pT/Hz^(1/2)under an external magnetic field of approximately 10,000 nT.The new AMs combine the pumping and probing polarized light,achieving a compact design.The fabricated PGM has a size of only 3 mm×3 mm×0.7 mm,which is beneficial for the miniaturization and integration of AMs.This work effectively expands the application of metasurfaces in the field of quantum precision measurement,and also provides a new viewpoint for the design and development of high-sensitivity and miniaturized AMs.展开更多
基金supported by the Zhejiang Provincial Science and Technology Plan(“Jianbing and Lingyan”)project(Grant No.2024C01099)Beijing Natural Science Foundation-Non-Consensus Innovation Project(Grant No.F251046)+1 种基金National Natural Science Fund for Excellent Young Scientists Fund Program(Grant No.KZ37124001)the National Natural Science Foundation of China(Grant No.42388101).
文摘The powerful light field manipulation capability of metasurfaces offers a novel development perspective for the quantum precision measurement.By applying the phasegradient metasurface(PGM)to atomic magnetometers(AMs),we have proposed and experimentally demonstrated a new type of compact single-beam elliptically polarized atomic magnetometers(EPAMs).Employing the fabricated chiral beam splitter PGM with high cross-polarization transmittance,a new atomic spin chirality detection method was devised,enabling the ultra-high sensitivity for extremely weak magnetic field measurement and achieving a high sensitivity of 2.67 pT/Hz^(1/2)under an external magnetic field of approximately 10,000 nT.The new AMs combine the pumping and probing polarized light,achieving a compact design.The fabricated PGM has a size of only 3 mm×3 mm×0.7 mm,which is beneficial for the miniaturization and integration of AMs.This work effectively expands the application of metasurfaces in the field of quantum precision measurement,and also provides a new viewpoint for the design and development of high-sensitivity and miniaturized AMs.
