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

Jinsheng Hu,

Zihua Liang, Peng Zhou

и другие.

ACS Photonics, Год журнала: 2024, Номер unknown

Опубликована: Дек. 19, 2024

Emerging atomic magnetometers (AMs) are among the most advanced sensors for detecting and characterizing magnetic fields. Recently, there has been growing interest in miniaturization integration of AMs due to urgent demand portability compactness various fields such as biomagnetism imaging. While conventional require a bulky setup optical devices pumping readout spin, here, novel chip-scale single-beam AM scheme is proposed by leveraging extreme transmissive circular polarization dichroism (TCPD) geometric phase manipulation spin-selective interference meta-optics. This achieved through silicon-based metasurfaces that enable realization arbitrary-to-circular conversion wavefront modulation within monolithic chip at Rb D1 transition wavelength (λ = 795 nm). Two metasurfaces, i.e., meta-circular-polarizer (MCP) meta-circular-polarizer-lens (MCPL), fabricated characterized, with measured TCPD 0.68 MCP well focusing efficiency around 70.67% 0.69 MCPL, respectively. As proof concept, 4 × mm3 vapor cell combined our metasurface construct miniaturized AM. The sensitivity compact metasurface-based system about 15 fT/Hz1/2, dynamic range near zero-field ± 2.2 nT. We envision this work could facilitate development burgeoning quantum sensors, which hold great potential high-spatial-resolution biomagnetic imaging, on-chip nuclear resonance, so forth.

Язык: Английский

Silicon Nitride‐Photonics‐Enabled Optical Pumping for Optically Pumped Magnetometer DOI Open Access

Yuting Xu,

Zhen Chai,

Xiaoqin Meng

и другие.

Laser & Photonics Review, Год журнала: 2025, Номер unknown

Опубликована: Фев. 16, 2025

Abstract Discrete optical system in optically pumped magnetometers (OPMs) presents a significant challenge to their integration into high‐spatial‐resolution magnetic field detection. Here, the electron spin polarization of atoms using fiber‐coupled silicon nitride () photonic integrated circuit (PIC) is demonstrated, by way delivering arrayed elliptically polarized light (EPL) vapor cell. Specifically, transforms 795 nm pump via waveguides eight divergent free‐space beams, simultaneously converting linear (LPL) EPL with an average conversion efficiency 71%. The PIC‐enabled OPM has detected weak optimal sensitivity 0.53 pT at 70Hz. This work effective approach for manipulation alkali chip and, crucially, introduces chip‐based solution OPMs. contributes nanophotonics atomic systems, paving future advancements quantum sensing.

Язык: Английский

Процитировано

0
Four-channel miniaturized SERF magnetometer with spatial inhomogeneous atomic polarization DOI
Zihua Liang, Yuhao Zhang, Tengyue Long

и другие.

Optics & Laser Technology, Год журнала: 2024, Номер 181, С. 112013 - 112013

Опубликована: Ноя. 4, 2024

Язык: Английский

Процитировано

1
Sensing Applications of PT‐Symmetry in Non‐Hermitian Photonic Systems DOI Creative Commons

Zuoxian Wang,

Zihua Liang,

Jinsheng Hu

и другие.

Advanced Quantum Technologies, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 27, 2024

Abstract In recent years, rapid advances in non‐Hermitian physics and PT‐symmetry have brought new opportunities for ultra‐sensitive sensing. Especially the presence of controllable non‐conservative processes optical photonic systems has triggered development singularity‐based By flexibly tuning gain, loss, coupling strength, a series high‐resolution sensing approaches can be realized, with potential on‐chip integration. Another important singularity is coherent perfect absorption‐lasing (CPAL) point PT‐broken phase, which manifests coexistence lasing CPA, exhibiting intriguing properties considerable potential. As crucial method quantum metrology, interaction between light alkali‐metal atomic ensembles promises unprecedented sensitivity measurement ultra‐weak magnetic field, inertia, time. Therefore, extending study from conventional solid‐state wave to diffusive such as attracting wide attention. this review, PT/anti‐PT symmetric summarized, special focus on platforms including integration waveguides, microcavities, metasurface, etc. addition, applications discussion further extended ensembles, projecting future research trends field.

Язык: Английский

Процитировано

1
Chip-Scale Single-Beam Atomic Magnetometer Enabled by Spin-Selective Interference Meta-Optics DOI

Jinsheng Hu,

Zihua Liang, Peng Zhou

и другие.

ACS Photonics, Год журнала: 2024, Номер unknown

Опубликована: Дек. 19, 2024

Emerging atomic magnetometers (AMs) are among the most advanced sensors for detecting and characterizing magnetic fields. Recently, there has been growing interest in miniaturization integration of AMs due to urgent demand portability compactness various fields such as biomagnetism imaging. While conventional require a bulky setup optical devices pumping readout spin, here, novel chip-scale single-beam AM scheme is proposed by leveraging extreme transmissive circular polarization dichroism (TCPD) geometric phase manipulation spin-selective interference meta-optics. This achieved through silicon-based metasurfaces that enable realization arbitrary-to-circular conversion wavefront modulation within monolithic chip at Rb D1 transition wavelength (λ = 795 nm). Two metasurfaces, i.e., meta-circular-polarizer (MCP) meta-circular-polarizer-lens (MCPL), fabricated characterized, with measured TCPD 0.68 MCP well focusing efficiency around 70.67% 0.69 MCPL, respectively. As proof concept, 4 × mm3 vapor cell combined our metasurface construct miniaturized AM. The sensitivity compact metasurface-based system about 15 fT/Hz1/2, dynamic range near zero-field ± 2.2 nT. We envision this work could facilitate development burgeoning quantum sensors, which hold great potential high-spatial-resolution biomagnetic imaging, on-chip nuclear resonance, so forth.

Язык: Английский

Процитировано

0