We are fascinated by these research fields

  • Universal matter-wave interferometry:
    We are working on scalable concepts and universal beam splitters for quantum experiments with atoms, atomic and molecular clusters, tailored organic molecules, native biomolecules and nanoparticles.
  • Quantum physics at the interface to the classical world:
    We explore the mass and complexity limits of matter-wave interference, experimental quantum decoherence and interferometric tests of wave function collapse
  • Cluster physics for matter-wave interferometry:
    We are exploring advanced cluster sources and DUV laser technologies for high-mass interferometry.
  • Quantum measurements for physical chemistry:
    We use matter-wave interference fringes as quantum nanorulers to measure electric, magnetic, optical and structural and dynamic properties of delocalized molecules.
  • Quantum tools for biomolecular physics:
    We have realized matter-wave experiments with vitamins, antibiotics and polypeptides. For that purpose, we have developped ultra-fast biomolecular launch techniques.
  • Optomechanics for high-mass matter-wave interferometry:
    We exploit optical forces to achieve optical cooling of dielectric nanoparticles in high-finesse cavities to enable novel high-mass quantum experiments.
  • Quantum sensors for mass spectrometry:
    We are exploring superconducting nanowire detectors as in advanced mass spectroscopy
  • Single-photon charge control:
    We are exploring new avenues towards biomolecular beams with high control over their charge and motional state for new experiments in protein quantum optics.

 Latest News


We welcome Pietro Vahramian from Milan as a new Master Student on the nanoparticle cooling experiment.


The Arndt Group published a new article on "Conformer Selection by Matter-Wave Interference" in Physical Review Letters


Stefan Kuhn has been awarded the Erwin-Schrödinger-Gesellschaft Nano-Prize 2018 in the Category "Science" for the paper “Optically driven ultra-stable...


The Arndt Group published a new article on "A Quantum Ruler for Magnetic Deflectometry" in Entropy


Schrodinger's cat is the one that's famously alive and dead. At the same time. Impossible! Roland Pease meets the quantum scientists hoping to bring...


The Arndt Group published a new article on "Isotope-selective high-order interferometry with large organic molecules in free fall" in New Journal of...