Visualizing Quantum Tunneling (image) University of Chicago Caption The spheres in this image represent the atoms of a quantum magnetic material, while the arrows denote their spin (magnetic orientation). The green bars indicate coupling between atoms, and the adjacent ghosted images illustrate quantum tunneling between different spin directions, a prominent characteristic of quantum mechanical systems. This particular spin configuration displays a quantum solution to a challenging computational problem. Credit Daniel Silevitch Usage Restrictions News organizations may use this image in connection with reports about the research of Thomas Rosenbaum and his associates. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.