Summary: Germany's national metrology institute; its Berlin site operates world-class magnetically shielded rooms and an Optical Magnetometry group building OPM-MEG, magnetorelaxometry and spin-precession fundamental-physics instrumentation.
Notes:
Koerber develops ultra-low-noise multichannel SQUID magnetometers and ultra-low-field NMR/MRI and biomagnetism instrumentation in PTB's shielded rooms. The work complements NV-center diamond ensemble quantum sensing (DEER, NMR, T1 relaxometry) at pT/sqrt(Hz) sensitivity by pursuing the same field-sensing goals in a different physical platform.
Middelmann develops OPM-based magnetorelaxometry imaging of magnetic nanoparticles, vector OPMs and OPM magnetomyography/MEG at PTB. This vapour-phase approach reaches femto-to-picotesla sensitivities complementary to NV-center diamond ensemble quantum sensors (DEER, nano-NMR, T1 relaxometry) that operate near the pT/sqrt(Hz) regime.
Sander(-Thoemmes) leads PTB's optical-magnetometry group, building multi-channel OPM-MEG systems in world-class shielded rooms and studying auditory/sensory brain responses, magnetic nanoparticles and clinical applications. This vapour-phase approach reaches femto-to-picotesla sensitivities complementary to NV-center diamond ensemble quantum sensors (DEER, nano-NMR, T1 relaxometry) that operate near the pT/sqrt(Hz) regime.
Voigt develops and benchmarks highly sensitive magnetometers (SQUID and SERF-OPM) at PTB, including standardised test benches comparing commercial OPMs to SQUID references and spin-dependent-interaction searches. This vapour-phase approach reaches femto-to-picotesla sensitivities complementary to NV-center diamond ensemble quantum sensors (DEER, nano-NMR, T1 relaxometry) that operate near the pT/sqrt(Hz) regime.