Searching for axions and light-by-light scattering with superconducting RF cavities

Yonatan Kahn; Bianca Giaccone; Andrei Lunin; Alexandr Netepenko; Roman Pilipenko; Michael Wentzel

doi:10.1117/12.2616734

2 March 2022 Searching for axions and light-by-light scattering with superconducting RF cavities

Yonatan Kahn, Bianca Giaccone, Andrei Lunin, Alexandr Netepenko, Roman Pilipenko, Michael Wentzel

Proceedings Volume 12016, Optical and Quantum Sensing and Precision Metrology II; 1201606 (2022) https://doi.org/10.1117/12.2616734
Event: SPIE OPTO, 2022, San Francisco, California, United States

Abstract

Axion-like particles which couple to photons can induce small nonlinearities in electromagnetism, leading to light-by-light scattering. We will describe a proposed experiment at the SQMS National Quantum Center at Fermilab to detect this process, using a high-Q superconducting radiofrequency (SRF) cavity. When the cavity is pumped with two resonant modes ω₁ and ω₂, the axion-induced nonlinearity will source a small signal at ωs = 2ω₁ − ω₂, which may be detected if ω_s is also a resonant frequency of the cavity. An experiment sensitive enough to set world-leading limits on axions may also be sensitive to the nonlinearity already present in quantum electrodynamics (QED) as encapsulated by the Euler-Heisenberg Lagrangian, which has never been probed at energies below the electron mass.

Conference Presentation

Citation Download Citation

Yonatan Kahn, Bianca Giaccone, Andrei Lunin, Alexandr Netepenko, Roman Pilipenko, and Michael Wentzel "Searching for axions and light-by-light scattering with superconducting RF cavities", Proc. SPIE 12016, Optical and Quantum Sensing and Precision Metrology II, 1201606 (2 March 2022); https://doi.org/10.1117/12.2616734

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