Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Frontiers in Optics

Electron Beam Profiling Using Coherent Atomic Magnetometry

Nicolas DeStefano, Todd D. Averett, Shukui Zhang, A. Camsonne, Aneesh Ramaswamy, Svetlana Malinovskaya, Irina V. Novikova, Eugeniy E. Mikhailov, S. Aubin

Published Jan 1, 2024• 0 citations
Publisher

Abstract

We image 2-D electron beam profiles through localized measurements of its magnetic field using nonlinear magneto-optical polarization rotation in hot Rb vapor.
DOI
10.1364/fio.2024.jtu4a.16

Related papers

Electron Beam Profiling Using Coherent Atomic Magnetometry

Nicolas DeStefano, Todd D. Averett, Shukui Zhang +7 more

We reconstruct 2-D electron beam profiles using local measurements of its magnetic field via nonlinear magneto-optical polarization rotation in Rb vapor.

•Jan 1, 2024•0 citations

Towards Quantum-Enhanced Electron Beam Profiling Via Atomic Magnetometry

Nicolas DeStefano, Todd Averett, S. Zhang +4 more

We are developing a quantum-enhanced atomic magnetometer via four-wave mixing and nonlinear magneto-optical rotation in Rb atoms for non-invasive profiling of an electron beam in 2 dimensions.

Frontiers in Optics•Jan 1, 2025•0 citations

Sensitive magnetometry based on nonlinear magneto-optical rotation

Dmitry Budker, Derek F. Jackson Kimball, Simon Rochester +2 more

Application of nonlinear magneto-optical (Faraday) rotation to magnetometry is investigated. Our experimental setup consists of a modulation polarimeter that measures rotation of the polarization plane of a laser beam resonant with transitions in Rb. Rb vapor is contained in an evacuated cell with antirelaxation coating that enables atomic ground-state polarization to survive many thousand wall collisions. This leads to ultranarrow features $(\ensuremath{\sim}{10}^{\ensuremath{-}6} \mathrm{G})$ in the magnetic-field dependence of optical rotation. The potential sensitivity of this scheme to sub-$\ensuremath{\mu}\mathrm{G}$ magnetic fields as a function of atomic density, light intensity, and light frequency is investigated near the $D1$ and $D2$ lines of ${}^{85}\mathrm{Rb}.$ It is shown that through an appropriate choice of parameters the shot-noise-limited sensitivity to small magnetic fields can reach $3\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}12} \mathrm{G}/\sqrt{\mathrm{Hz}}.$

Physical Review A•Sep 11, 2000•335 citations

Magnetometry in dense coherent media

Irina V. Novikova, George R. Welch

The rotation of the polarization direction of linearly polarized light produced by the nonlinear magneto-optic effect has been proposed as a sensitive measure of small magnetic fields. In this paper, the advantages of this technique in optically thick media for precision magnetometry are discussed. Results are presented for measurements of this rotation for resonant light in optically dense Rb vapour under various conditions, with and without buffer gas. The sensitivity of the measurements of small magnetic field is investigated as a function of laser frequency, laser power, beam diameter and atomic density for D 1 line of 87Rb.

Journal of Modern Optics•Mar 1, 2002•30 citations

Rydberg fluorescence imaging for electron beam characterization

Rob Behary, Nicolas DeStefano, Todd Averett +9 more

We use properties of Rydberg atoms in an atomic vapor to reconstruct the profile of an electron beam in an all optical nearly non-invasive measurement.

Frontiers in Optics•Jan 1, 2025•0 citations

Electron beam profiling via Rydberg electromagnetically induced transparency in rubidium vapor with crossed laser beams

Rob Behary, Kevin Su, Nicolas DeStefano +9 more

Quantum Computing, Communication, and Simulation•Mar 5, 2026•0 citations
Application of nonlinear magneto-optical (Faraday) rotation to magnetometry is investigated. Our experimental setup consists of a modulation polarimeter that measures rotation of the polarization plane of a laser beam resonant with transitions in Rb. Rb vapor is contained in an evacuated cell with antirelaxation coating that enables atomic ground-state polarization to survive many thousand wall collisions. This leads to ultranarrow features $(\ensuremath{\sim}{10}^{\ensuremath{-}6} \mathrm{G})$ in the magnetic-field dependence of optical rotation. The potential sensitivity of this scheme to sub-$\ensuremath{\mu}\mathrm{G}$ magnetic fields as a function of atomic density, light intensity, and light frequency is investigated near the D1D1D1 and D2D2D2 lines of 85Rb.{}^{85}\mathrm{Rb}.85Rb. It is shown that through an appropriate choice of parameters the shot-noise-limited sensitivity to small magnetic fields can reach $3\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}12} \mathrm{G}/\sqrt{\mathrm{Hz}}.$
The rotation of the polarization direction of linearly polarized light produced by the nonlinear magneto-optic effect has been proposed as a sensitive measure of small magnetic fields. In this paper, the advantages of this technique in optically thick media for precision magnetometry are discussed. Results are presented for measurements of this rotation for resonant light in optically dense Rb vapour under various conditions, with and without buffer gas. The sensitivity of the measurements of small magnetic field is investigated as a function of laser frequency, laser power, beam diameter and atomic density for D 1 line of 87Rb.