Abstract

We have recently shown [Nat. Phys. 8, 819 (2012)] that Alkali atoms contained in a vapor cell can serve as a highly accurate standard for microwave (MW) electric field strength as well as polarization. Here we show for the first time that Rydberg atom electromagnetically induced transparency can be used to image MW electric fields with unprecedented precision. The spatial resolution of the method is far into the subwavelength regime λ/650 or 66 μm at 6.9 GHz. The electric field resolutions are similar to those we have already demonstrated 50μVcm1. Our experimental results agree with finite element calculations of test electric-field patterns.

© 2014 Optical Society of America

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