Sensitive BEC magnetometry with optimized probing
| Autor: | Sekiguchi, Naota, Torii, Aki, Toda, Hiroyuki, Kuramoto, Ryohei, Fukuda, Daiki, Hirano, Takuya, Shibata, Kosuke |
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| Rok vydání: | 2020 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | An improved spatial magnetometer using a spinor Bose-Einstein condensate of $^{87}$Rb atoms is realized utilizing newly developed two-polarization phase contrast imaging. The optical shot noise is suppressed by carefully choosing the probe parameters. We attain a dc-magnetic field sensitivity of 7.7 ${\rm pT/\sqrt{Hz}}$ over a measurement area of 28 ${\rm \mu m^{2}}$. The attained sensitivity per unit area is superior to that for other modern low-frequency magnetometers with micrometer-order spatial resolution. This result is a promising step for realizing quantum-enhanced magnetometry surpassing classical methods. Comment: 12 pages, 3 figures, submitted to Physical Review Letters |
| Databáze: | arXiv |
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