Advanced quantum network could be a prototype for the quantum internet

One of the most complex quantum networks built to date would allow 18 people to communicate securely thanks to the power of quantum physics. The researchers behind the work say it offers a practical path to building a global quantum internet, but others are sceptical. The long-promised quantum internet would allow quantum computers to communicate at distance by exchanging particles of light called photons that have been linked together by quantum entanglement . It would also allow networks of quantum sensors to be linked, or classical computers to send and receive unhackable communications. But wiring together a quantum world isn't as simple as laying down cables, because ensuring that one node of the network can be entangled with another is a challenge.