Atomic Magnetometry Using a Metasurface Polarizing Beamsplitter in Silicon-on-Sapphire,ACS Photonics

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Atomic Magnetometry Using a Metasurface Polarizing Beamsplitter in Silicon-on-Sapphire
ACS Photonics ( IF 6.5 ) Pub Date : 2024-09-09 , DOI: 10.1021/acsphotonics.4c00744
Xuting Yang ₁ , Pritha Mukherjee ₁ , Minjeong Kim ₁ , Hongyan Mei ₁ , Chengyu Fang ₁ , Soyeon Choi ₁ , Yuhan Tong ₁ , Sarah Perlowski ₁ , David A. Czaplewski ₂ , Alan M. Dibos ₂ , Mikhail A. Kats ₁ , Jennifer T. Choy ₁

Affiliation

We demonstrate atomic magnetometry using a metasurface polarizing beamsplitter fabricated on a silicon-on-sapphire (SOS) platform. The metasurface splits a beam that is near-resonant with the rubidium atoms (795 nm) into orthogonal linear polarizations, enabling the measurement of magnetically sensitive circular birefringence in rubidium vapor through balanced polarimetry. We incorporated the metasurface into an atomic magnetometer based on nonlinear magneto-optical rotation and measured subnanotesla sensitivity, which is limited by low-frequency technical noise and transmission loss through the metasurface. To our knowledge, this work represents the first demonstration of SOS nanophotonics for atom-based sensing and paves the way for highly integrated, miniaturized atomic sensors with enhanced sensitivity and portability.

中文翻译：

在蓝宝石硅上使用超表面偏振分束器的原子磁力测量

我们使用在蓝宝石硅 (SOS) 平台上制造的超表面偏振分束器演示了原子磁力测量。超表面将与铷原子 (795 nm) 近共振的光束分成正交线性偏振，从而能够通过平衡偏振法测量铷蒸气中的磁敏圆双折射。我们将超表面集成到基于非线性磁光旋转的原子磁力计中，并测量了亚纳米特斯拉灵敏度，该灵敏度受到低频技术噪声和通过超表面的传输损耗的限制。据我们所知，这项工作首次展示了用于原子传感的 SOS 纳米光子学，并为高度集成、微型化的原子传感器（具有增强的灵敏度和便携性）铺平了道路。

更新日期：2024-09-09

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