Miniaturized Quantum Magnetometers: Electromechanical Integration and Applications

Background

Quantum magnetometers based on the Larmor precession of optically pumped atomic spins now reach sensitivities at the sub-fT/Hz^1/2 level, yet their laboratory implementations still rely on bulky lasers, heated vapour cells, large magnetic shields and discrete optical components. Miniaturization is therefore the key step towards deploying these sensors outside the laboratory, in wearable biomagnetic imaging, geomagnetic and space measurement, and distributed or chip-scale sensing arrays. Recent advances in micro-fabricated vapour cells, vertical-cavity surface-emitting lasers, integrated photonics, wafer-level packaging and compact magnetic shielding have brought integrated quantum magnetometers close to practical maturity. However, integration introduces coupled optical, thermal and magnetic design problems that are rarely addressed in a unified way. This symposium brings together device physicists, instrument engineers and application researchers to discuss how miniaturized quantum magnetometers can be integrated and applied. The symposium, which serves as a specialized session of the 6th International Conference on Computing Innovation and Applied Physics (CONF-CIAP 2027), will focus on quantum physics and applications.

Goal/Rationale

The symposium addresses a central problem in the field: as quantum magnetometers shrink, sensitivity, bandwidth and long-term stability are increasingly limited not by atomic physics but by integration-level issues, namely thermal management in micro-fabricated cells, optical alignment tolerances, residual magnetization and field inhomogeneity of compact shields, packaging-induced stress and noise, and the lack of traceable calibration for miniature devices. These problems are usually studied separately by the device, packaging and metrology communities. The symposium aims to bridge them. We will review the state of the art in chip-scale and portable quantum magnetometers, identify the dominant noise and systematic-error mechanisms introduced by integration, and discuss practical design rules and characterization protocols. We also intend to connect device developers with application users in biomagnetism, geophysics, space and industrial inspection, so that application requirements flow back into device design. Sessions will combine invited talks, contributed presentations and a panel discussion on the benchmarking and standardization of miniature magnetometers.

Scope

Topics related to the symposium theme - "Miniaturized Quantum Magnetometers: Electromechanical Integration and Applications" - are particularly encouraged, including:

• Chip-scale and MEMS-based atomic magnetometers
• Micro-fabricated vapour cells, integrated lasers and photonic detection
• Miniaturized magnetic shielding and active field compensation
• Thermal management, noise and long-term stability of integrated sensors
• Calibration, metrology and traceability of miniature magnetometers
• Field applications: geomagnetic, space, navigation and industrial inspection
• Extremely-weak magnetic field measurement