Network testbed (IMAGE) Purdue University Caption Using a programmable wavelength-selective switch can help increase the number of users in a quantum network without increasing photon loss from the switching device, a new study shows. Credit Purdue University/Navin Lingaraju 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.