Vacuum squeezing enhanced micrometer scale vapor cell magnetometer
Optics
2025-07-11 v1 Quantum Physics
Abstract
We report on an optical magnetometer enhanced by vacuum-squeezed light, employing an Mx magnetometer based on Rb vapor in a micrometer-scale cell (~100 m). Using the well-established polarization self-rotation effect in a room-temperature Rb vapor cell, we achieve -3 dB of vacuum squeezing within the noise spectral window of 100 Hz to several MHz, corresponding to 3.5 dB squeezing when accounting for optical losses. Leveraging this level of squeezing, we demonstrate a magnetic field sensitivity of approx. 1 pT. The combination of vacuum-squeezed light and micrometer-scale vapor cells paves the way for compact, low-power-consumption atomic sensors with enhanced performance.
Cite
@article{arxiv.2507.07672,
title = {Vacuum squeezing enhanced micrometer scale vapor cell magnetometer},
author = {Shahar Monsa and Yair Chasid and Michael Shuldiner and Shmuel Sternklar and Eliran Talker},
journal= {arXiv preprint arXiv:2507.07672},
year = {2025}
}