Atomic magnetometry using a metasurface polarizing beamsplitter in silicon on sapphire

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 measurement of magnetically sensitive...

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Published in:arXiv.org 2024-04
Main Authors: Yang, Xuting, Mukherjee, Pritha, Kim, Minjeong, Mei, Hongyan, Fang, Chengyu, Choi, Soyeon, Tong, Yuhan, Perlowski, Sarah, Czaplewski, David A, Dibos, Alan M, Kats, Mikhail A, Choy, Jennifer T
Format: Article
Language:English
Subjects:
Birefringence
Magnetic measurement
Metasurfaces
Optical properties
Optical rotation
Rubidium
Sapphire
Sensitivity enhancement
Silicon
Transmission loss
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container_title arXiv.org
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creator Yang, Xuting
Mukherjee, Pritha
Kim, Minjeong
Mei, Hongyan
Fang, Chengyu
Choi, Soyeon
Tong, Yuhan
Perlowski, Sarah
Czaplewski, David A
Dibos, Alan M
Kats, Mikhail A
Choy, Jennifer T
description 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 measurement of magnetically sensitive circular birefringence in a rubidium vapor through balanced polarimetry. We incorporated the metasurface into an atomic magnetometer based on nonlinear magneto-optical rotation and measured sub-nanotesla 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.
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subjects Birefringence
Magnetic measurement
Metasurfaces
Optical properties
Optical rotation
Rubidium
Sapphire
Sensitivity enhancement
Silicon
Transmission loss
title Atomic magnetometry using a metasurface polarizing beamsplitter in silicon on sapphire
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