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QuTech scientist presents roadmap for quantum internet

It may be the first quantum technology to become reality: quantum internet. Researchers from QuTech in Delft have published in…

It may be the first quantum technology to become reality: quantum internet. Researchers from QuTech in Delft have published in Science a detailed roadmap for the development of quantum internet. They describe six phases, starting with simple qubits networks that already allow for a form of inherent secure quantum communication. In the final phase there is a network of quantum computers that are connected with quantum technology.

Communication Technology

A quantum internet would be a revolution in communication technology, as it would use strange quantum phenomena as an intrusion. Researchers around the world are working on the technology that would allow them to exchange quantum bits between two points on Earth. Such quantum bits may have values ​​& # 39; 1

& # 39; and & # 39; 0 & # 39; as in classic pieces, but also both at the same time. And they can be “entangled”: their states are then connected, so the measurement of one has an immediate effect on the other.

Coordination

As a result, quantum internet has unique features that will always be out of reach for the classic internet. The first such as by entanglement, activities in two highly separated places can be coordinated very accurately. This allows synchronization of bells very accurately, and telescopic observations can be conveniently linked so that astronomers get much sharper images. The other feature is that the quantum connections are inherently safe. When two qubits are completely entangled, it’s virtually impossible to listen to the connection.

Preparing and Measuring

In the first phase of an actual quantum network – a “Preparing and Measuring Network” – it is possible to send quantits between any points in a network. This is already enough to support different cryptographic applications. The most advanced phase is the quantum interconnection of fully functioning quantum computers.

The expectation is that the first quantum network for sending end-to-end qubits will be realized in the next few years, on the way to large-scale quantum networks.

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