Probability Graph (IMAGE) University of Bristol Caption The probability distribution of quantum walk on an example circulant graph, drawn using the code 'qwViz.' To sample this probability distribution is in general hard for a classical computer, but it can be simple on a primitive quantum computer. Credit © University of Bristol. All rights reserved Usage Restrictions The image is for single-use only, should include copyright information and should not be archived License Licensed 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.