The "Unhackable internet", is a great concept towards a secure communication. Nothing is secure in the current network system. So this concept can protect information from hackers. According to MIT, Dutch researchers will complete a quantum internet between Delft and the Hague, later this year 2020. Also Harvard and MIT both are researching on this.
As the fiber-optic cables carrying data across the internet are vulnerable, a quantum internet could be used to send un-hackable messages, improve the accuracy of GPS and enable cloud-based quantum computing. Currently Europe and China and the USA are experimenting with quantum communications networks.
This is called un-hackable internet because any internet connection making use of this connection would destroy the data if a hacking attempt was made and would leave clear evidence of tampering. What this means is that any attempt at hacking will immediately be noticed by the original sender and the intended receiver.
The technology relies on a quantum behavior of atomic particles called entanglement. Entangled photons can’t be covertly read without disrupting their content. But entangled particles are difficult to create, and harder still to transmit over long distances. Ensuring an unbroken connection over greater distances will require quantum repeaters that extend the network.
This is not a new idea. This is just a new process of old ideas. Many groups of scientists are trying to do this from 2000. In 2015, Dr. Hanson and a group of other researchers managed to entangle qubits (quantum bits) 0.8 miles (1.3 kilometers) apart. But the connection was short-lived and could only spark up once an hour.
“Sending a photon into a piece of fiber is not a big deal,” says David Awschalom, a professor at the University of Chicago, “but creating and sustaining entanglement is challenging.” Currently, quantum communication experiences photon loss over long distances, which is one of the biggest challenges for scientists looking to improve large-scale quantum computing.
But now they are confident that they have found the missing link to solve this problem. This link, which Einstein called 'spooky action at a distance', can theoretically exist over vast distances and would make the quantum connection ultra-secure.
Their invented device can store quantum information in milliseconds — enough time to transport information over thousands of kilometers. "This device combines the three most important elements of a quantum repeater – a long memory, the ability to efficiently catch information off photons, and a way to process it locally," said Bart Machielse of Harvard.
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