A quantum computer uses special equipment and algorithms to perform wildly complicated computations faster and more efficiently than classical computers. (See also: Quantum Computing.)

While we are still some years away from quantum computing, some physicists believe that quantum networks are possible—and that they would provide security, privacy, and safety unmatched by today’s internet.

Delft University of Technology in the Netherlands is currently working on a quantum network, while China is building a quantum communications satellite program.