A Remotely Interrogated All-Optical $^{87}$Rb Magnetometer
Atomic Physics
2015-06-11 v1 Quantum Physics
Abstract
Atomic magnetometry was performed at Earth's magnetic field over a free-space distance of ten meters. Two laser beams aimed at a distant alkali-vapor cell excited and detected the Rb magnetic resonance, allowing the magnetic field within the cell to be interrogated remotely. Operated as a driven oscillator, the magnetometer measured the geomagnetic field with \lessgtrsim{\lesssim}3.5\,pT precision in a 2\,s data acquisition; this precision was likely limited by ambient field fluctuations. The sensor was also operated in self-oscillating mode with a 5.3\,pT/ noise floor. Further optimization will yield a high-bandwidth, fully remote magnetometer with sub-pT sensitivity.
Keywords
Cite
@article{arxiv.1208.1236,
title = {A Remotely Interrogated All-Optical $^{87}$Rb Magnetometer},
author = {Brian Patton and Oscar Versolato and D. Chris Hovde and Eric Corsini and James Higbie and Dmitry Budker},
journal= {arXiv preprint arXiv:1208.1236},
year = {2015}
}
Comments
Accepted to Appl. Phys. Lett.; 3 pages, 3 figures