Spatially Resolved Precision Measurement of Magnetic Field Using Ultracold Cesium Atoms as Sensors
Sub-Doppler laser-cooled cesium-133 atoms are utilized as quantum sensors to achieve precise mapping of magnetic fields across a region in ultra-high vacuum (UHV), with a spatial resolution of 1 cm and a sensitivity of approximately 550 pT/√Hz, enabling accurate measurements within the nanotesla [nT...
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MDPI AG
2025-03-01
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| author | Anjali Bisht Manoj Das Poonam Arora |
| author_facet | Anjali Bisht Manoj Das Poonam Arora |
| author_sort | Anjali Bisht |
| collection | DOAJ |
| description | Sub-Doppler laser-cooled cesium-133 atoms are utilized as quantum sensors to achieve precise mapping of magnetic fields across a region in ultra-high vacuum (UHV), with a spatial resolution of 1 cm and a sensitivity of approximately 550 pT/√Hz, enabling accurate measurements within the nanotesla [nT] range. The cold cesium-133 atoms used for magnetic field measurements in this paper are a key component of the cesium fountain frequency standard at CSIR-NPL, which contributes to both timekeeping and magnetic sensing. The results show magnetic field fluctuations within 1 nT with a spatial resolution of 1 cm. The uncertainty in these measurements is of the order of 1.24 × 10<sup>−16</sup>, ensuring reliable and precise spatially resolved magnetic field mapping. |
| format | Article |
| id | doaj-art-db980c6dbcb948ac9e5ecd9c302e36a9 |
| institution | DOAJ |
| issn | 2218-2004 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | MDPI AG |
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| series | Atoms |
| spelling | doaj-art-db980c6dbcb948ac9e5ecd9c302e36a92025-08-20T03:14:14ZengMDPI AGAtoms2218-20042025-03-011342610.3390/atoms13040026Spatially Resolved Precision Measurement of Magnetic Field Using Ultracold Cesium Atoms as SensorsAnjali Bisht0Manoj Das1Poonam Arora2Time & Frequency Metrology, Indian Standard Time Division, CSIR-National Physical Laboratory, New Delhi 110012, IndiaTime & Frequency Metrology, Indian Standard Time Division, CSIR-National Physical Laboratory, New Delhi 110012, IndiaTime & Frequency Metrology, Indian Standard Time Division, CSIR-National Physical Laboratory, New Delhi 110012, IndiaSub-Doppler laser-cooled cesium-133 atoms are utilized as quantum sensors to achieve precise mapping of magnetic fields across a region in ultra-high vacuum (UHV), with a spatial resolution of 1 cm and a sensitivity of approximately 550 pT/√Hz, enabling accurate measurements within the nanotesla [nT] range. The cold cesium-133 atoms used for magnetic field measurements in this paper are a key component of the cesium fountain frequency standard at CSIR-NPL, which contributes to both timekeeping and magnetic sensing. The results show magnetic field fluctuations within 1 nT with a spatial resolution of 1 cm. The uncertainty in these measurements is of the order of 1.24 × 10<sup>−16</sup>, ensuring reliable and precise spatially resolved magnetic field mapping.https://www.mdpi.com/2218-2004/13/4/26cold atomsquantum sensingmagnetic fieldmetrology |
| spellingShingle | Anjali Bisht Manoj Das Poonam Arora Spatially Resolved Precision Measurement of Magnetic Field Using Ultracold Cesium Atoms as Sensors Atoms cold atoms quantum sensing magnetic field metrology |
| title | Spatially Resolved Precision Measurement of Magnetic Field Using Ultracold Cesium Atoms as Sensors |
| title_full | Spatially Resolved Precision Measurement of Magnetic Field Using Ultracold Cesium Atoms as Sensors |
| title_fullStr | Spatially Resolved Precision Measurement of Magnetic Field Using Ultracold Cesium Atoms as Sensors |
| title_full_unstemmed | Spatially Resolved Precision Measurement of Magnetic Field Using Ultracold Cesium Atoms as Sensors |
| title_short | Spatially Resolved Precision Measurement of Magnetic Field Using Ultracold Cesium Atoms as Sensors |
| title_sort | spatially resolved precision measurement of magnetic field using ultracold cesium atoms as sensors |
| topic | cold atoms quantum sensing magnetic field metrology |
| url | https://www.mdpi.com/2218-2004/13/4/26 |
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