Figure 1 (IMAGE) The University of Hong Kong Caption Figure 1Schematic of polariton propagations under real frequency and synthesized complex frequency excitation. While polariton waves at real frequencies have limited propagation distance, combining propagation waves from different real frequencies based on complex frequencies of incidence can achieve nearly lossless propagation. Credit The University of Hong Kong Usage Restrictions N/A 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.