Vacuum squeezing enhanced micrometer scale vapor cell magnetometer

• URL: http://arxiv.org/abs/2507.07672v1
• Date: Thu, 10 Jul 2025 11:53:01 GMT
• Title: Vacuum squeezing enhanced micrometer scale vapor cell magnetometer
• Authors: Shahar Monsa, Yair Chasid, Michael Shuldiner, Shmuel Sternklar, Eliran Talker,
• Abstract summary: We report on an optical magnetometer enhanced by vacuum-squeezed light, employing an Mx magnetometer based on $87$Rb vapor in a micrometer-scale cell.<n>Using the well-established polarization self-rotation effect in a room-temperature $87$Rb vapor cell, we achieve -3 dB of vacuum squeezing within the noise spectral window of 100 Hz to several MHz.<n>The combination of vacuum-squeezed light and micrometer-scale vapor cells paves the way for compact, low-power-consumption atomic sensors with enhanced performance.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We report on an optical magnetometer enhanced by vacuum-squeezed light, employing an Mx magnetometer based on $^{87}$Rb vapor in a micrometer-scale cell (~100 $\mu$m). Using the well-established polarization self-rotation effect in a room-temperature $^{87}$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$/$$\sqrt{Hz}$. The combination of vacuum-squeezed light and micrometer-scale vapor cells paves the way for compact, low-power-consumption atomic sensors with enhanced performance.

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