Definition — What is Quantum Internet? 

The Quantum Internet is a network that will let quantum devices exchange some information within an environment. In the quantum world, data can be encoded in the state of qubits, which can be created in quantum devices like a Quantum computer or a Quantum processor. In today's world building a quantum internet is a key ambition for many countries around it, such a breakthrough will give them a competitive advantage in a promising disruptive technology, and opens a new world of innovations and unlimited possibilities.

The U.S. Department of Energy (DoE) published the first blueprint of its kind, laying out a step-by-step strategy to make the quantum internet dream come true and they say the quantum internet will be virtually unhackable. Nearly $625 million in federal funding is expected to be allocated to the project. This is definitely a long-term plan that will require new kinds of engineering and technology, not something that will be implemented next year. 

A quantum internet would be able to transmit large volumes of data across immense distances at a rate that exceeds the speed of light. You can imagine all the applications that can benefit from such speed. People can send “unhackable” data over a quantum network. This is because quantum internet uses quantum encryption or quantum cryptography which has adopted the Quantum Key Distribution (QKD) technology. It is nearly impossible to tamper a  message which is been processed through QKD, the reason being it sends the encrypted message and its keys separately. Tampering such a message causes it to be automatically destroyed, with both the sender and the receiver notified of the situation.