Reconfigurable circular polarization medium frequency atomic receiver using magneto-electric effect

TL;DR

This paper presents a novel alkali vapor-based magneto-electric device capable of high-sensitivity, reconfigurable circular polarization detection and phase-to-amplitude conversion for medium-frequency RF magnetic fields, advancing RF communication and magnetometry.

Contribution

It introduces a new application of nonlinear magnetoelectric effects in alkali vapors for medium-frequency RF magnetic field measurement and communication.

Findings

Achieved an extinction ratio of up to 500:1 in circular basis detection.

Demonstrated phase-to-amplitude conversion of RF signals using alkali vapor.

Developed a versatile optical receiver for RF communication.

Abstract

Nonlinear magnetoelectric effect(NME) in alkali atomic vapor has applications in precision magnetometry in the radio-frequency domain. We report the application of the NME in alkali atomic vapors for projective measurement of medium-frequency (MF) magnetic fields in a circular basis with an extinction ratio up to 500:1 . Utilizing a longitudinal static magnetic field, we demonstrate a high-sensitivity technique for characterizing the ellipticity of radio-frequency (RF) magnetic fields which can in turn be used for phase sensitive detection in mid frequency communication. Additionally, we demonstrate the conversion of binary phase shift keyed RF magnetic fields into amplitude modulation of generated optical fields, a versatile receiver for communication using the medium frequency band.