Efficient Interface (IMAGE) University of Innsbruck Caption Two particles are positioned between highly reflective mirrors and entangled with one another by means of a laser. Additional lasers encode quantum information in the ions and then transfer the information to a single photon. Credit U. Innsbruck Usage Restrictions Please cite the owner of the image when publishing. This image may be freely used by reporters as part of news coverage, with proper attribution. Non-reporters must contact <i>Physical Review Letters<i/> for permission. 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.