High-Quality Copper Oxide Crystals Synthesized for Quantum Photonics

Researchers from KTH Royal Institute of Technology report that they have developed a scalable production method for cuprous oxide (Cu2O) micrometer-size crystals. Also involved in the study were the Institute of Solid State Physics; Graz University of Technology, Austria; and Laboratoire d’Optique Appliquée Ecole Polytechnique, Palaiseau, France. “The unique properties of Cu2O can lead to new schemes for quantum information processing with light in the solid state, which are difficult to realize with other materials,” said Stephan Steinhauer, a researcher in KTH’s Quantum Nano Photonics group. “This work paves the way for the widespread use of Cu2O in optoelectronics and for the development of...