Xiang Zhang Group (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption From left Xiang Zhang, Haim Suchowski, Zi Jing Wong, Kevin O'Brien and Alessandro Salandrino have created a nonlinear light-generating zero-index metamaterial that holds promise for future quantum networks and light sources. Credit Photo by Roy Kaltschmidt, Berkeley Lab Usage Restrictions None 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.