Quantum Nanophysics & Molecular Quantum Optics
Our group explores new avenues to prepare and utilize quantum phenomena in complex nanoscale systems, from small molecules and clusters over proteins to large dielectric nanoparticles. Our experiments overlap with aspects of philosophy, when we probe the nature of reality in matter-wave delocalization and tests of quantum linearity. We share methods with physical chemistry and molecular biology in our developments of molecular beam and detection methods for complex organic, biological and dielectric objects, that study a mass range from 100 amu to about 1,000,000 amu. Our focus on biomolecular beams aims at rendering also vitamins, peptides, proteins and DNA strands accessible to advanced quantum delocalization studies. In our lab we have realized three matter-wave experiments that shall allow us to explore new ways of realizing universal beam splitters for quantum experiments with objects in this entire mass range. This will also open new avenues to quantum assisted metrology and sensing. We explore new aspects of optomechanics in our studies on cavity cooling of dielectric nanoparticles that shall prepare quantum interference experiments in an unprecedented mass range.