Self-Calibrating Vector Atomic Magnetometry through Microwave Polarization Reconstruction

Author
Abstract
<p>Atomic magnetometry is one of the most sensitive ways to measure magnetic fields. We present a method for converting a naturally scalar atomic magnetometer into a vector magnetometer by exploiting the polarization dependence of hyperfine transitions in rubidium atoms. First, we fully determine the polarization ellipse of an applied microwave field using a self-calibrating method, i.e., a method in which the light-atom interaction provides everything required to know the field in an orthogonal laboratory frame. We then measure the direction of an applied static field using the polarization ellipse as a threedimensional reference defined by Maxwell\textquoterights equations. Although demonstrated with trapped atoms, this technique could be applied to atomic vapors, or a variety of atomlike systems.</p>
Year of Publication
2018
Journal
Physical Review Letters
Volume
121
Date Published
2018-10
ISSN Number
0031-9007
URL
https://journals.aps.org/prl/pdf/10.1103/PhysRevLett.121.153202
DOI
10.1103/PhysRevLett.121.153202
JILA PI
Journal Article