Since several decades people search for the electric dipole moment (EDM) of the neutron, an unambiguous manifestation of parity (P) and time reversal symmetry (T) violation. EDM experiments are among the strongest tests for physics beyond the Standard Model of Particle Physics. They are also essential to explain the excess of matter in the Universe. With a long history of innovation and persistence, the neutron EDM dnis now limited to below 3·10−26 e·cm, an extraordinarily small number, corresponding to 10−22 eV in energy resolution. The experiments are also strong drivers of developments using a variety of technologies, always well beyond the state of the art. In my presentation I will talk about the PanEDM experiment at the Institute Laue-Langevin in Grenoble, using the world’s best magnetic shield together with an extremely powerful new source of ultra-cold neutrons. In the second part Ian idea to enhance the current sensitivity ultimately by a factor of 1000 will be discussed. One can expect many new and interesting systematic effects before such an improvement really happens. Possibilities on how and where such a new experiment could be done, how we want to deal with the unknown on this level and which practical applications of the involved technologies, e.g. quantum sensing, we could find on the way.
