Quantum Assisted Electrometry using Bright Atomic Resonances
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.
- Publication:
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arXiv e-prints
- Pub Date:
- May 2012
- DOI:
- 10.48550/arXiv.1205.4461
- arXiv:
- arXiv:1205.4461
- Bibcode:
- 2012arXiv1205.4461S
- Keywords:
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- Physics - Atomic Physics