{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,27]],"date-time":"2026-07-27T05:58:53Z","timestamp":1785131933337,"version":"3.55.0"},"reference-count":47,"publisher":"Wiley","issue":"14","license":[{"start":{"date-parts":[[2026,7,20]],"date-time":"2026-07-20T00:00:00Z","timestamp":1784505600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,7,20]],"date-time":"2026-07-20T00:00:00Z","timestamp":1784505600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["77051001"],"award-info":[{"award-number":["77051001"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Nanophotonics"],"published-print":{"date-parts":[[2026,7,27]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Conventional understanding of a spin\u2010exchange relaxation\u2010free (SERF) atom ensemble pertains to the common perception that the rapid exchange of atom state finally results in uniform time evolution of the whole ensemble. However, in this study, we demonstrate that by manipulating pumping polarization in a micrometer level, misalignment between the time evolution of different sub\u2010ensembles can be created within a single SERF ensemble with unprecedented independency. A novel pumping system consisting of a miniaturized\n                    <jats:sup>87<\/jats:sup>\n                    Rb vapor cell and a space\u2010variant polarization metasurface is developed for the proof of concept. Our method induces position\u2010dependent atomic anisotropy in both pumping and absorption into the thermal atomic ensemble. By constructing calculated Zeeman\u2010sublevel populations in the SERF regime, distinct sensing channels are generated with 0.22\u00a0V\/nT average scale factor, which is comparable with a single channel generated by a single SERF ensemble. The average crosstalk ratios between adjacent channels are measured up to 32\u00a0dB, through the excitation of the fictitious magnetic field (3.5\u00a0nT, 30\u00a0Hz), which is measured as 20\u00a0dB without sub\u2010ensemble isolation in the same experimental condition. Our work demonstrates unprecedented crosstalk reduction in single\u2010cell multichannel SERF magnetometry, which holds new promise for applications including high\u2010spatial resolution neural biomagnetism mapping and portable magnetism measurement devices.\n                  <\/jats:p>","DOI":"10.1002\/nap2.70213","type":"journal-article","created":{"date-parts":[[2026,7,21]],"date-time":"2026-07-21T06:54:01Z","timestamp":1784616841000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Sub\u2010Ensemble Isolation in SERF Magnetometry Enabled by Micrometer\u2010Scale Polarization Control"],"prefix":"10.1002","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0009-0006-2824-2468","authenticated-orcid":false,"given":"Yuhao","family":"Zhang","sequence":"first","affiliation":[{"name":"Key Laboratory of Ultra\u2010Weak Magnetic Field Measurement Technology Ministry of Education School of Instrumentation and Optoelectronic Engineering Beihang University  Beijing China"},{"name":"Zhejiang Provincial Key Laboratory of Ultra\u2010Weak Magnetic\u2010Field Space and Applied Technology Hangzhou Innovation Institute Beihang University  Hangzhou China"},{"name":"Hefei National Laboratory  Hefei China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zihua","family":"Liang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Ultra\u2010Weak Magnetic Field Measurement Technology Ministry of Education School of Instrumentation and Optoelectronic Engineering Beihang University  Beijing China"},{"name":"Zhejiang Provincial Key Laboratory of Ultra\u2010Weak Magnetic\u2010Field Space and Applied Technology Hangzhou Innovation Institute Beihang University  Hangzhou China"},{"name":"Hefei National Laboratory  Hefei China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lu","family":"Liu","sequence":"additional","affiliation":[{"name":"Key Laboratory of Ultra\u2010Weak Magnetic Field Measurement Technology Ministry of Education School of Instrumentation and Optoelectronic Engineering Beihang University  Beijing China"},{"name":"Zhejiang Provincial Key Laboratory of Ultra\u2010Weak Magnetic\u2010Field Space and Applied Technology Hangzhou Innovation Institute Beihang University  Hangzhou China"},{"name":"Hefei National Laboratory  Hefei China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jinsheng","family":"Hu","sequence":"additional","affiliation":[{"name":"Key Laboratory of Ultra\u2010Weak Magnetic Field Measurement Technology Ministry of Education School of Instrumentation and Optoelectronic Engineering Beihang University  Beijing China"},{"name":"Zhejiang Provincial Key Laboratory of Ultra\u2010Weak Magnetic\u2010Field Space and Applied Technology Hangzhou Innovation Institute Beihang University  Hangzhou China"},{"name":"Hefei National Laboratory  Hefei China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Peng","family":"Zhou","sequence":"additional","affiliation":[{"name":"Key Laboratory of Ultra\u2010Weak Magnetic Field Measurement Technology Ministry of Education School of Instrumentation and Optoelectronic Engineering Beihang University  Beijing China"},{"name":"Zhejiang Provincial Key Laboratory of Ultra\u2010Weak Magnetic\u2010Field Space and Applied Technology Hangzhou Innovation Institute Beihang University  Hangzhou China"},{"name":"Hefei National Laboratory  Hefei China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gen","family":"Hu","sequence":"additional","affiliation":[{"name":"Key Laboratory of Ultra\u2010Weak Magnetic Field Measurement Technology Ministry of Education School of Instrumentation and Optoelectronic Engineering Beihang University  Beijing China"},{"name":"Zhejiang Provincial Key Laboratory of Ultra\u2010Weak Magnetic\u2010Field Space and Applied Technology Hangzhou Innovation Institute Beihang University  Hangzhou China"},{"name":"Hefei National Laboratory  Hefei China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gaopu","family":"Hou","sequence":"additional","affiliation":[{"name":"Key Laboratory of Ultra\u2010Weak Magnetic Field Measurement Technology Ministry of Education School of Instrumentation and Optoelectronic Engineering Beihang University  Beijing China"},{"name":"Zhejiang Provincial Key Laboratory of Ultra\u2010Weak Magnetic\u2010Field Space and Applied Technology Hangzhou Innovation Institute Beihang University  Hangzhou China"},{"name":"Hefei National Laboratory  Hefei China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mao","family":"Ye","sequence":"additional","affiliation":[{"name":"Key Laboratory of Ultra\u2010Weak Magnetic Field Measurement Technology Ministry of Education School of Instrumentation and Optoelectronic Engineering Beihang University  Beijing China"},{"name":"Zhejiang Provincial Key Laboratory of Ultra\u2010Weak Magnetic\u2010Field Space and Applied Technology Hangzhou Innovation Institute Beihang University  Hangzhou China"},{"name":"Hefei National Laboratory  Hefei China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,7,20]]},"reference":[{"key":"e_1_2_11_2_1","doi-asserted-by":"publisher","DOI":"10.1038\/nature01484"},{"key":"e_1_2_11_3_1","doi-asserted-by":"publisher","DOI":"10.1063\/1.3491215"},{"key":"e_1_2_11_4_1","doi-asserted-by":"publisher","DOI":"10.1038\/s42254\u2010023\u201000558\u20103"},{"key":"e_1_2_11_5_1","doi-asserted-by":"publisher","DOI":"10.1038\/nature26147"},{"key":"e_1_2_11_6_1","doi-asserted-by":"publisher","DOI":"10.1038\/nrn.2018.1"},{"key":"e_1_2_11_7_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11433\u2010025\u20102802\u20107"},{"key":"e_1_2_11_8_1","doi-asserted-by":"publisher","DOI":"10.1364\/ol.37.002247"},{"key":"e_1_2_11_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.optlastec.2023.109534"},{"key":"e_1_2_11_10_1","doi-asserted-by":"publisher","DOI":"10.1103\/physrevapplied.14.011002"},{"key":"e_1_2_11_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.neuroimage.2019.05.063"},{"key":"e_1_2_11_12_1","doi-asserted-by":"publisher","DOI":"10.1088\/2058\u20109565\/ad4e60"},{"key":"e_1_2_11_13_1","doi-asserted-by":"publisher","DOI":"10.1109\/TIM.2025.3544375"},{"key":"e_1_2_11_14_1","doi-asserted-by":"publisher","DOI":"10.1063\/5.0105945"},{"key":"e_1_2_11_15_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41378\u2010024\u201000758\u20106"},{"key":"e_1_2_11_16_1","doi-asserted-by":"publisher","DOI":"10.1364\/ol.465832"},{"key":"e_1_2_11_17_1","doi-asserted-by":"publisher","DOI":"10.1364\/oe.398540"},{"key":"e_1_2_11_18_1","doi-asserted-by":"publisher","DOI":"10.1063\/1.5099156"},{"key":"e_1_2_11_19_1","doi-asserted-by":"publisher","DOI":"10.1126\/sciadv.adt3938"},{"key":"e_1_2_11_20_1","doi-asserted-by":"publisher","DOI":"10.1103\/physrevlett.98.200801"},{"key":"e_1_2_11_21_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.sna.2023.114868"},{"key":"e_1_2_11_22_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.sna.2023.114591"},{"key":"e_1_2_11_23_1","doi-asserted-by":"publisher","DOI":"10.1364\/oe.24.015403"},{"key":"e_1_2_11_24_1","doi-asserted-by":"publisher","DOI":"10.1364\/oe.517961"},{"key":"e_1_2_11_25_1","doi-asserted-by":"publisher","DOI":"10.1103\/physrevlett.131.260801"},{"key":"e_1_2_11_26_1","doi-asserted-by":"publisher","DOI":"10.1103\/physrevapplied.22.044011"},{"key":"e_1_2_11_27_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41566\u2010020\u201000750\u20102"},{"key":"e_1_2_11_28_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.1210713"},{"key":"e_1_2_11_29_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41566\u2010022\u201001108\u20106"},{"key":"e_1_2_11_30_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.abi6860"},{"key":"e_1_2_11_31_1","doi-asserted-by":"publisher","DOI":"10.1002\/lpor.202402292"},{"key":"e_1_2_11_32_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsphotonics.4c01638"},{"key":"e_1_2_11_33_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsphotonics.4c00744"},{"key":"e_1_2_11_34_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41378\u2010024\u201000715\u20103"},{"key":"e_1_2_11_35_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsphotonics.4c02535"},{"key":"e_1_2_11_36_1","doi-asserted-by":"publisher","DOI":"10.1364\/ol.527932"},{"key":"e_1_2_11_37_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsphotonics.4c01694"},{"key":"e_1_2_11_38_1","doi-asserted-by":"publisher","DOI":"10.1002\/adom.202400594"},{"key":"e_1_2_11_39_1","doi-asserted-by":"publisher","DOI":"10.1088\/2058\u20109565\/ad4912"},{"key":"e_1_2_11_40_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.optlastec.2024.112013"},{"key":"e_1_2_11_41_1","doi-asserted-by":"publisher","DOI":"10.1103\/physreva.102.012822"},{"key":"e_1_2_11_42_1","volume-title":"Developments 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