Remote atomic vapor magnetometer with Sub-pT resolution operating at ambient temperature

Abstract

We have designed and characterized a Cesium vapor cell magnetometry system specifically aimed at meeting the challenges of remote interrogation. Standard single-mode telecom optical fibers are used for optical delivery and collection. The additional noise contribution due to optical polarization drift during propagation is mitigated by polarization and modal walk-off. We show that it is possible to obtain as low as 0.1 pT/Hz1/2 resolution at 1 Hz without temperature control over the ambient temperature range of -5 to 30 C.