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

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.

doi:10.1021/acsphotonics.4c00744

ACS Photonics

2024

DOI: 10.1021/acsphotonics.4c00744

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

Xuting Yang,

Pritha Mukherjee,

Minjeong Kim

et al.

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2024

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Chip-Scale Single-Beam Atomic Magnetometer Enabled by Spin-Selective Interference Meta-Optics

Hu,

Liang,

Zhou

et al. 2024

ACS Photonics

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Emerging atomic magnetometers (AMs) are among the most advanced sensors for detecting and characterizing magnetic fields. Recently, there has been growing interest in the miniaturization and integration of AMs due to the urgent demand for portability and compactness in various fields such as biomagnetism imaging. While conventional AMs require a bulky setup of optical devices for the pumping and optical readout of atomic spin, here, a novel chip-scale single-beam AM scheme is proposed by leveraging extreme transmissive circular polarization dichroism (TCPD) and geometric phase manipulation of spinselective interference meta-optics. This is achieved through siliconbased metasurfaces that enable the realization of arbitrary-tocircular polarization conversion and wavefront modulation within a monolithic chip at Rb D1 transition wavelength (λ = 795 nm). Two spin-selective interference metasurfaces, i.e., meta-circularpolarizer (MCP) and meta-circular-polarizer-lens (MCPL), are fabricated and characterized, with a measured TCPD of 0.68 for the MCP as well as focusing efficiency and TCPD of around 70.67% and 0.69 for the MCPL, respectively. As a proof of concept, a 4 × 4 × 4 mm 3 Rb vapor cell is combined with our metasurface to construct a miniaturized single-beam AM. The sensitivity of our compact metasurface-based system is about 15 fT/Hz 1/2 , with a dynamic range near zero-field of ± 2.2 nT. We envision that this work could facilitate the development of burgeoning chip-scale quantum sensors, which hold great potential for high-spatialresolution biomagnetic imaging, on-chip nuclear magnetic resonance, and so forth.

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Chip-Scale Single-Beam Atomic Magnetometer Enabled by Spin-Selective Interference Meta-Optics

Hu,

Liang,

Zhou

et al. 2024

ACS Photonics

View full text Add to dashboard Cite

show abstract

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

Cited by 1 publication

References 47 publications

Chip-Scale Single-Beam Atomic Magnetometer Enabled by Spin-Selective Interference Meta-Optics

Chip-Scale Single-Beam Atomic Magnetometer Enabled by Spin-Selective Interference Meta-Optics

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