Computing How Quantum States Overlap (IMAGE) DOE/US Department of Energy Caption The floating block method pictured as ice blocks and the sea. The method applies a filtering process called imaginary time evolution to two Hamiltonians, represented by ice and sea. It gives the overlap between the two Hamiltonians’ lowest energy states. Credit Image courtesy of Avik Sarkar Usage Restrictions Image courtesy of Avik Sarkar License Original content 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.