Quantum video chat links scientists on two different continents
Demo of ultrasecure internet connection is a step toward global quantum communications
![telescope in Graz, Austria](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2017/09/092917_EC_quantum-video_main.jpg?fit=860%2C460&ssl=1)
SECRET CODE A telescope in Graz, Austria, received particles of light beamed down to Earth from the Chinese satellite Micius. Those photons encode a quantum encryption key used in a secure quantum videoconference. A laser on the telescope tracks the satellite’s location in the sky.
© Johannes Handsteiner/ÖAW