Gawlik works on nonlinear magneto-optics and atomic magnetometry (NMOR, NV-diamond magnetometry) and contributes to the GNOME network. 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.