Tiny carbon rings enable a new form of quantum control

Quantum states can be precisely controlled with the help of tiny carbon rings measuring only a few nanometers in size. This is made possible by a class of rarely used electromagnetic dipoles called toroidal moments. Using computer simulations, physicists at Martin Luther University Halle-Wittenberg (MLU) have now found a way to generate and control these nanostructures without any loss. The findings are published in npj Computational Materials and create new opportunities for quantum computer technology.