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 Quantum Assisted Electrometry using Bright Atomic Resonances


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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 sqrtHz^-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.



Autor: J. Sedlacek; A. Schwettmann; H. Kübler; R. Löw; T. Pfau; J. P. Shaffer

Fuente: https://archive.org/







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