Accession Number:

AD1057152

Title:

Atom Based Sensing of Weak Radio Frequency Electric Fields Using Homodyne Readout

Descriptive Note:

Journal Article - Open Access

Corporate Author:

Homer L. Dodge Department of Physics and Astronomy, The University of Oklahoma Norman United States

Report Date:

2017-02-20

Pagination or Media Count:

10.0

Abstract:

We utilize a homodyne detection technique to achieve a new sensitivity limit for atom-based, absolute radio-frequency electric field sensing of 5 V cm1 Hz12. A Mach-Zehnder interferometer is used for the homodyne detection. With the increased sensitivity, we investigate the dominant dephasing mechanisms that affect the performance of the sensor. In particular, we present data on power broadening, collisional broadening and transit time broadening. Our results are compared to density matrix calculations. We show that photon shot noise in the signal readout is currently a limiting factor. We suggest that new approaches with superior readout with respect to photon shot noise are needed to increase the sensitivity further

Subject Categories:

  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE