Speaker
Description
Optically pumped magnetometers (OPMs), in which an atomic ensemble is optically polarized and its spin evolution is optically detected, represent a paradigmatic quantum sensing technology that applies to medical diagnostics, geophysics, space science and searches beyond the standard model.
In this talk I will describe quantum-noise limited magnetic gradiometers [1,2], which can operate with femtotesla sensitivity up to Earth-scale fields, and quantum enhancement of a high-density OPM using squeezed light [3]. Finally, I’ll introduce a novel quantum enabling technology based on laser-written vapor cells [4].
References
[1] V. G. Lucivero et al. “Femtotesla nearly quantum-noise-limited pulsed gradiometer at Earth-scale fields” Phys. Rev. Applied 18, L021001 (2022)
[2] M. E. Limes et al. “Portable magnetometry for detection of biomagnetism in ambient environments”, Phys. Rev. Applied 14, 011002 (2020)
[3] C. Troullinou et al. “Quantum-enhanced magnetometry at optimal number density”, Accepted in Phys. Rev. Lett. (2023)
[4] V. G. Lucivero et al. “Laser-written vapor cells for chip-scale atomic sensing and spectroscopy”, Optics Express 30, 27149-27163 (2022)
