The next phase of the proton radius puzzle

Physicists at MPQ have tested quantum mechanics to a completely new level of precision using hydrogen spectroscopy, and in doing so they came much closer to solving the well-known proton charge radius puzzle, which is […]

Ultrafast Oscillation of Light Waves Unveiled in Plasma Spark

A German-Canadian collaboration, with physicists from the attoworld-team of the Ludwig-Maximilians-Universität München, the Max Planck Institute of Quantum Optics, and the Joint Attosecond Science Laboratory of the National Research Council and the University of Ottawa, […]

Playing Pool with Excitons

Semiconductors play an important role, be it in electronics, optoelectronics or photovoltaics. But like other solid bodies, they are quantum many-body systems. Therefore, a calculation of their material properties would overburden conventional computers. Instead, this […]

Quantum Brakes in Molecules

Physicists of the Laboratory for Attosecond Physics have measured the flight times of electrons in molecules after their creation with light. The small quantum particles were emitted from a specific atom within the molecules, which […]

Long-lived pionic helium

MPQ Scientists opened a new window into the quantum world. After eight years they succeeded in a challenging experiment with PSI and CERN: they created an artificial atom, the so-called pionic helium, in which the […]