Spatial symmetry-broken atomic magnetometry
Year: 2025
Type: article
Abstract: We report an atomic magnetic sensor that leverages the spatial symmetry-broken (SSB) properties of the four-wave mixing (FWM) process induced by an external weak magnetic field. The dispersive signals around the center of zero magnetic field are obtained from counterpropagating polarization-selective FWM signals in a rubidium vapor cell. The SSB magnetometer has a linear response within −5 μT to 5 μT, and the magnetic sensitivity is about 10 $pT/Hz$ at 10 Hz, and the bandwidth is in the range of 18.25 kHz. This method would open diverse applications ranging from biomagnetic sensing to Earth’s magnetic field mapping as a robust atomic magnetic sensor.
Source: Optics Express
DOI: 10.1364/oe.568742
Authors: Sanghyun Park, Min-Hwan Lee, Hyogi Kim, Jihyeong Ju, Sanglok Lee, Jaeuk Baek, Heung-Ryoul Noh, Geol Moon
Institution: Chonnam National University
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,270
Awards: G3743259832, G6431386481, G681064017
OpenAlex ID: W4413624393