Optical magnetometer: Quantum resonances at pumping repetition rate of 1/n of the Larmor frequency

Andrei Ben-Amar Baranga; Alexander Gusarov; Gennady A. Koganov; David Levron; Reuben Shuker

doi:10.1063/5.0022629

Optical magnetometer: Quantum resonances at pumping repetition rate of 1/n of the Larmor frequency

Andrei Ben-Amar Baranga, Alexander Gusarov, Gennady A. Koganov, David Levron, Reuben Shuker

Research output: Contribution to journal › Article › peer-review

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Abstract

The response of a spin exchange relaxation free atomic magnetometer to a repetitive short-pulsed pump was investigated. Quantum sub-resonances at a repetition rate of 1/n of the Larmor frequency of the magnetic field inside the shield are experimentally observed and theoretically explained. This is a type of synchronization phenomenon. Investigations in single alkali atom cells and mixed alkali atoms of K and Rb are presented. In the latter, one species is pumped while the probe is on the other species polarized by spin exchange. The effect of spin destruction, spin exchange, and collisions is studied in order to account for the width of the resonances. Quantum calculations of a three-level Λ model for this phenomenon exhibit a dip at the resonance frequency in the absorption spectrum for both cases of pulsed and cw pump modes and an evidence for electromagnetically induced transparency.

Original language	English
Article number	174501
Journal	Journal of Applied Physics
Volume	128
Issue number	17
DOIs	https://doi.org/10.1063/5.0022629
State	Published - 7 Nov 2020

ASJC Scopus subject areas

Physics and Astronomy (all)

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title = "Optical magnetometer: Quantum resonances at pumping repetition rate of 1/n of the Larmor frequency",

abstract = "The response of a spin exchange relaxation free atomic magnetometer to a repetitive short-pulsed pump was investigated. Quantum sub-resonances at a repetition rate of 1/n of the Larmor frequency of the magnetic field inside the shield are experimentally observed and theoretically explained. This is a type of synchronization phenomenon. Investigations in single alkali atom cells and mixed alkali atoms of K and Rb are presented. In the latter, one species is pumped while the probe is on the other species polarized by spin exchange. The effect of spin destruction, spin exchange, and collisions is studied in order to account for the width of the resonances. Quantum calculations of a three-level Λ model for this phenomenon exhibit a dip at the resonance frequency in the absorption spectrum for both cases of pulsed and cw pump modes and an evidence for electromagnetically induced transparency.",

author = "{Ben-Amar Baranga}, Andrei and Alexander Gusarov and Koganov, {Gennady A.} and David Levron and Reuben Shuker",

note = "Funding Information: This research was supported in part by ONRG GRANT-NICOP under No. N62909-19-1-2030. Publisher Copyright: {\textcopyright} 2020 Author(s).",

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AU - Ben-Amar Baranga, Andrei

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AU - Levron, David

AU - Shuker, Reuben

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AB - The response of a spin exchange relaxation free atomic magnetometer to a repetitive short-pulsed pump was investigated. Quantum sub-resonances at a repetition rate of 1/n of the Larmor frequency of the magnetic field inside the shield are experimentally observed and theoretically explained. This is a type of synchronization phenomenon. Investigations in single alkali atom cells and mixed alkali atoms of K and Rb are presented. In the latter, one species is pumped while the probe is on the other species polarized by spin exchange. The effect of spin destruction, spin exchange, and collisions is studied in order to account for the width of the resonances. Quantum calculations of a three-level Λ model for this phenomenon exhibit a dip at the resonance frequency in the absorption spectrum for both cases of pulsed and cw pump modes and an evidence for electromagnetically induced transparency.

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Optical magnetometer: Quantum resonances at pumping repetition rate of 1/n of the Larmor frequency

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