Freiburg 2024 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 45: Quantum Metrology for Fundamental Physics

Q 45.2: Talk

Thursday, March 14, 2024, 11:30–11:45, HS 1221

Polarization dynamics in a self-compensated comagnetometer for dark matter searches — •Daniel Gavilan-Martin^{1, 2}, Mikhail Padniuk³, Emmanuel Klinger^{1, 2, 4}, Grzegorz Lukasiewicz³, Szymon Pustelny³, Derek Jackson Kimball⁵, Dmitry Budker^{1, 2, 6}, and Arne Wickenbrock^{1, 2} — ¹Helmholtz-Institut Mainz — ²Johannes Gutenberg-Universität Mainz — ³Marian Smoluchowski Institute of Physics, Jagiellonian University in Krakow — ⁴Université de Franche-Comté — ⁵Department of Physics, California State University East Bay, Hayward — ⁶Department of Physics, University of California, Berkeley

Self-compensated comagnetometers, employing overlapping samples of spin-polarized alkali and noble gases (for example K-3He) are promising sensors for exotic beyond-the-standard-model fields and high-precision metrology such as rotation sensing. We propose and demonstrate a general method to calibrate the response of an atomic comagnetometer, to any possible perturbation of the atomic spins. The method uses a convenient, easy-to-implement protocol that is experimentally verified by successfully using it to predict the comagnetometer response to rotations. Furthermore, I will discuss the prospects of a search for gradient coupled axion-like dark matter conducted with such machine.

Keywords: Magnetometry; Dark Matter; Quantum sensing