Experimental research with ultracold atoms on quantum simulation of complex systems, and the limits of quantum sensing with atomic systems. Ultracold Quantum Gases Group Link.
Advanced quantum-based methods in liquid- and solid-state nuclear magnetic resonance (NMR), high-field magnetic resonance imaging (MRI), and lately electron paramagnetic resonance (EPR) and combinations of EPR and NMR in terms of dynamic nuclear polarization (DNP). Danish Center for Ultrahigh Field NMR Spectroscopy Link
While traditional MEG depends on liquid Helium cooled Superconducting QUantum Interference Devices (SQUID), the next generation of magnetic field sensors, Optically Pumped Magnetometers (OPMs), operate at room temperature. Free of the liquid Helium dewar, sensors can therefore be placed close to biomagnetically active tissue, not only to the cerebral cortex .MEG Research - Aarhus Universitetshospital (auh.dk)
Theoretical many-body physics and quantum optics. Quantum simulation with cold atoms, van der Waals materials, and quantum sensing. Georg M. Bruun.
Experimental quantum optics, optomechanics, photonics and sensing. Group Link
Research on nonperturbative time-dependent driving of quantum systems and generation of light, including nonclassical light. Attoscience Group Link.
Ultrafast dynamics of quantum-correlated electrons and quantum fluid clusters. Cluster Dynamics Group Link.
Single molecule fluorescence sensing of structure-dynamics-function relationships of macromolecular assemblies in fundamental biological processes and nanotechnology applications.Group page
Research on integrated photonics. Driven to improve the power efficiency, cost and precision of industrial applications. Group webpage
Tomographic imaging of materials and biological tissues gives excellent insight into the complex, multi-length-scale structures. Immense data sets are generated and it is a significant challenge to reconstruct and analyze the data. Tomographic imaging is conducted using many different contrast mechanisms using both in-house (axia.au.dk), synchrotron X-ray and neutron radiation. Group page
Biochromophores are potential qubits for future quantum computers, that is, systems where it is possible to realize superposition states of say the ground state and excited electronic states. Here, challenges are fast deactivation pathways (short lifetimes) and the susceptibility to environmental disturbances. Fundamental knowledge on the intrinsic photophysics may help to identify and design proper molecular systems. Importantly, we have developed laser-based techniques that may be used to determine the heights of energy barriers that hinder unwanted internal relaxation in the electronically excited state of chromophores. Also, our experimental techniques allow us to freeze out quantum states and explore the coupling between electronic states and vibrational ones and provide a detailed picture at the quantum level. Our experiments are not stand-alone but go hand in hand with quantum-chemical modelling. The latter aids in the interpretation of our data but at the same time we provide true benchmarks that are needed to test and improve current models.
