Attosecond science addresses the dynamics of electrons on their natural time scale, and much progress has been made in the understanding of processes such as attosecond charge migration; attosecond photoionization times; and the driven attosecond dynamics that takes place during high-harmonic generation (HHG). The majority of attosecond studies have been performed on atoms and molecules in the...
Coulomb explosion imaging (CEI) of polyatomic molecules induced by intense, femtosecond pulses at the European X-ray free-electron laser (EuXFEL) has allowed several new insights. In recent years, CEI has resolved asymmetric deformation and bond-angle opening in fragmenting water molecules [Jahnke2021], reconstructed the three-dimensional geometry of a five-atom molecule using a charge buildup...
When two or more quantum particles in a many-body system are entangled, its wavefunction cannot be factorized as a product of the wavefunctions of its constituents. It has been central to the ongoing second quantum revolution, as seen in the rapid development of the quantum information science. Initially, the idea of entanglement was dismissed by Albert Einstein himself as the 'spooky'...
Highly excited (Rydberg) atoms have exaggerated properties making them extremely sensitive to external electromagnetic fields and interacting strongly with their environment. Atomic vapor cells represent an attractive platform for studying Rydberg atoms and fabricating quantum devices. For example, Rydberg atoms in vapor cells have been used as sensitive detectors of electric fields of...
Matter-wave interferometry serves as a fundamental test of quantum mechanics, directly probing the superposition principle and constraining potential modifications to the theory.
Recent experiments have demonstrated quantum interference of nanoparticles exceeding 25,000 Da [1], and the newest generation of interferometers aims to extend this mass limit by one to two orders of magnitude [2]....
