Researchers from MIT say that they have developed the world’s first five-atom quantum computer, and they assert that it is capable of cracking today’s traditional encryption methods—today’s most notable encryption methods.
To break this down a bit, in computing, numbers are traditionally binary (represented by 0 and 1). However, in quantum computing, these units are known as “qubits,” which are in a state of superposition, being simultaneously 0 and 1. This opens a number of doors in relation to computing and encryption.
This is just a very basic overview, the video below delves into the workings and purposes a bit deeper.