Untappable communication becomes practical with new system in future quantum internet

Engineers from QuTech (a collaboration between TU Delft and TNO) can provide untappable communication that is cost-scaling to many users by using measurement-device independent (MDI) quantum key distribution (QKD). A notable side-feature is that, courtesy of Cisco, conventional internet operaltes in parallel, on the same optical fiber from Dutch telecom provider KPN. MDI-QKD is an important step towards an accessible quantum internet.