Femtotesla atomic magnetometer for zero- and ultralow-field nuclear magnetic resonance.

ABSTRACT: Zero- and ultralow-field nuclear magnetic resonance (ZULF NMR) has experienced rapid development and provides an excellent tool for diverse research fields ranging from materials science and quantum information processing to fundamental physics. The detection of ZULF NMR signals in samples with natural abundance remains a challenging endeavor, due to the limited sensitivity of NMR detectors and thermal polarization. In this work, we demonstrate a femtotesla (fT) Potassium spin-exchange relaxation-free (SERF) magnetometer designed for ZULF NMR detection. A Potassium vapor cell with high buffer gas pressure and high atomic number density is used in the magnetometer. With absorption spectroscopy and SERF effect, the key parameters of the vapor cell are characterized and applied to optimize th

SUBMITTER: Hong T 

PROVIDER: S-EPMC12848260 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature