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arXiv · 1205.4461

Quantum Assisted Electrometry using Bright Atomic Resonances

J. Sedlacek·A. Schwettmann·H. Kübler·R. Löw·T. Pfau·J. P. Shaffer
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Abstract

We demonstrate a new method for measuring radio frequency (RF) electric fields based on quantum interference in an atom. Using a bright resonance prepared within an electromagnetically induced transparency window we are able to achieve a sensitivity of ~ 30 {\mu}V cm^-1 sqrt(Hz)^-1. For this work, we demonstrated detection of RF electric fields as small as ~ 8 {\mu}V cm^-1. The sensitivity is currently limited by the spectral bandwidth of the lasers used in the experiment and can be significantly improved in the future. The method can serve as a new quantum based standard for RF electrometry. The reproducibility, accuracy and stability of using a quantum system for measuring RF electric fields promises to advance electrometry to the current levels of magnetometry.

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J. Sedlacek, A. Schwettmann, H. Kübler, R. Löw, T. Pfau, J. P. Shaffer. 2012-05-20. Quantum Assisted Electrometry using Bright Atomic Resonances. https://arxiv.org/abs/1205.4461

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