Experimental setup (IMAGE) University of Warsaw, Faculty of Physics Caption The paper's first author (left) - Mateusz Mazelanik - and the manager of the Quantum Optical Devices Laboratory - Dr Michal Parniak - next to the quantum-memory-based processor for light. Credit University of Warsaw Usage Restrictions None 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.