21.15109/ARP/HQN8RT Kurkó, Árpád Árpád Kurkó https://orcid.org/0000-0002-6113-7671 HUN-REN Wigner Research Centre for Physics Nagy, Dávid Dávid Nagy HUN-REN Wigner Research Centre for Physics Simon, Alexandra Alexandra Simon HUN-REN Wigner Research Centre for Physics Clark, Thomas W. Thomas W. Clark HUN-REN Wigner Research Centre for Physics Dombi, András András Dombi https://orcid.org/0000-0003-2158-0609 HUN-REN Wigner Research Centre for Physics Varga, Dániel Dániel Varga HUN-REN Wigner Research Centre for Physics Williams, Francis B. Francis B. Williams https://orcid.org/0009-0004-7311-9245 HUN-REN Wigner Research Centre for Physics Fortágh, József József Fortágh Eberhard Karls Universität Tübingen Domokos, Peter Peter Domokos https://orcid.org/0000-0002-1002-5733 HUN-REN Wigner Research Centre for Physics Vukics, András András Vukics https://orcid.org/0000-0001-8916-4033 HUN-REN Wigner Research Centre for Physics ARP 2026 Physics cold atoms quantum sensing magnetic sensing differential metrology Kurkó, Árpád Árpád Kurkó HUN-REN Wigner Research Centre for Physics 2026-04-07 2026-04-13 2025-09-11/2025-11-10 Experimental data (image data) 10.5158/ARP/HQN8RT 21.15109/ARP/HQN8RT/XCXCZK 21.15109/ARP/HQN8RT/CHUHXG 21.15109/ARP/HQN8RT/QFSS5S 21.15109/ARP/HQN8RT/8FGNEN 21.15109/ARP/HQN8RT/CC5ZUU 21.15109/ARP/HQN8RT/4TPY9O 21.15109/ARP/HQN8RT/EYS4JI 21.15109/ARP/HQN8RT/GDTNC3 21.15109/ARP/HQN8RT/RNKXUU 21.15109/ARP/HQN8RT/3JYUIV 21.15109/ARP/HQN8RT/VM85PC 21.15109/ARP/HQN8RT/LOOX0D 21.15109/ARP/HQN8RT/HB148Y 21.15109/ARP/HQN8RT/P6LWNV 21.15109/ARP/HQN8RT/X6AWGS 21.15109/ARP/HQN8RT/OUYXJM 21.15109/ARP/HQN8RT/IZ0L3W 21.15109/ARP/HQN8RT/FLPAYE 21.15109/ARP/HQN8RT/LCAAZP 21.15109/ARP/HQN8RT/O0YEQC 21.15109/ARP/HQN8RT/2ZA7NJ 21.15109/ARP/HQN8RT/YUNTZB 21.15109/ARP/HQN8RT/DWHGBW 21.15109/ARP/HQN8RT/D09RMS 21.15109/ARP/HQN8RT/P2L0IV 21.15109/ARP/HQN8RT/4N2D1T 21.15109/ARP/HQN8RT/0XOMDZ 21.15109/ARP/HQN8RT/DEBU3Y 21.15109/ARP/HQN8RT/5TFGQ0 21.15109/ARP/HQN8RT/GSVWN7 21.15109/ARP/HQN8RT/3OEN0S 21.15109/ARP/HQN8RT/QGT9ER 21.15109/ARP/HQN8RT/BSJG5H 21.15109/ARP/HQN8RT/GGSVKO 21.15109/ARP/HQN8RT/N07H7P 21.15109/ARP/HQN8RT/N4BZGI 21.15109/ARP/HQN8RT/WDOL5J 21.15109/ARP/HQN8RT/NU0TWD 21.15109/ARP/HQN8RT/XGOAWO 21.15109/ARP/HQN8RT/4YHLJO 21.15109/ARP/HQN8RT/W0X7TV 21.15109/ARP/HQN8RT/M21J1F 21.15109/ARP/HQN8RT/8CWXYB 21.15109/ARP/HQN8RT/VXNEDL 287369332 287369332 143684722 143684722 143684722 432008828 287369332 216004661 216004661 287369332 143684722 432008828 432008828 287369332 216004661 432008828 143684722 287369332 143684722 143684722 432008828 432008828 143684722 432008828 143684722 216004661 216004661 287369332 432008828 287369332 216004661 287369332 143684722 216004661 143684722 432008828 287369332 143684722 216004661 143684722 432008828 216004661 216004661 1812 application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream application/octet-stream text/plain; charset=UTF-8 1.0 Creative Commons Attribution-NonCommercial 4.0 International License. We present a differential technique for vector magnetic sensing based on a cold- atom cloud in a magnetic quadrupole trap. An external homogeneous magnetic field displaces the trap center in a direction and magnitude proportional to the field. By reversing the quadrupole polarity between experimental shots and comparing the resulting cloud positions, we extract a differential displacement signal that is free from common-mode effects such as gravity and weak magnetic- field inhomogeneities. The signal is directionally proportional to the external field and requires only absorption imaging, without spectroscopic interrogation. Assuming micron-scale position resolution, the technique enables field resolution at the milli-Gauss level. It offers a practical tool for field compensation in magnetically sensitive experimental stages, bridging operational regimes from Earth-level fields to atomic magnetometry. A straightforward extension to full three-dimensional sensing is possible with only a minimal addition to standard cold-atom infrastructure. Hungarian National Research, Development and Innovation Office 2022-2.1.1-NL-2022-00004 and 2025-3.1.1-ED- 2025-00011 ERANET COFUND QuantERA MOCA 2019-2.1.7- ERA NET-2022-00041 QuantERA II V-mag 2024-1.2.2-ERA NET- 2024-00012 Swiss National Science Foundation 230870