Quantum sensing for particle physics

Quantum sensing uses properties of quantum mechanics to go beyond what is possible with traditional measurement techniques. In particle physics, key problems in which quantum sensing can have a vital role include neutrino properties, tests of fundamental symmetries (Lorentz invariance and the equivalence principle, searches for electric dipole moments and possible variations of the fundamental constants), the search for dark matter and testing ideas about the nature of dark energy. Quantum sensor technologies using atom interferometry, optomechanical devices, or atomic and nuclear clocks are inherently relevant for low-energy physics, but other platforms, such as quantum dots, superconducting devices or spin sensors, might also be useful in future high-energy particle physics detectors. This Perspective explores the opportunities for these technologies in future particle physics experiments and outlines the challenges that could be tackled through collaborative efforts. Quantum sensing exploits properties of quantum systems to go beyond what is possible with traditional measurement techniques, hence opening exciting opportunities in both low-energy and high-energy particle physics experiments.