Researchers aiming to create a secure quantum version of the internet need a device called a quantum repeater, which doesn’t yet exist – but now two teams say they are well on the way to building oneResearchers aiming to create a secure quantum version of the internet need a device called a quantum repeater, which doesn’t yet exist – but now two teams say they are well on the way to building one Researchers aiming to create a secure quantum version of the internet need a device called a quantum repeater, which doesn’t yet exist – but now two teams say they are well on the way to building one New Scientist – Home