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Q: Fachverband Quantenoptik und Photonik

Q 5: Magnetometry

Q 5.1: Hauptvortrag

Montag, 11. März 2024, 11:00–11:30, HS 1221

Tailoring design of quantum sensor to biomedical applications — •Victor Lebedev, Simon Nordenstroem, Stefan Hartwig, and Thomas Middelmann — PTB 8.2, Abbestr. 2-12, D-10587 Berlin, Germany

Atomic magnetometers are among the most established types of quantum sensors and can be flexibly engineered to match the signal properties specific to the given application. Biomagnetic studies call for extraordinarily broad parameter ranges -- bandwidth, sensitivity and isotropy, to name a few -- to be secured in view of burst-like, arbitrarily oriented biological magnetic fields [1]. This implies distinct design decisions for the sensor in the sense of geometry, atomic medium and operation mode, accounting also for the constraints of the clinical laboratory environment and practicality. Here we illustrate the approach by several application cases, and, in particular, with atomic magnetometers for magnetomyography [2], which is characterized by field patterns being beyond the reach of the conventional sensors used in industry and studied in labs. We discuss broader applications of the implemented magnetometer design and further improvements of the measurement technique.

[1] Lebedev et al, in Flexible high performance magnetic field sensors, Springer, 2023.

[2] Marquetand et al, Int. J. Bioelectromagn. 23, 2, 11 (2021).

Keywords: quantum sensing; atomic magnetometer; biomagnetism; magnetomyography