Quantum Computing

Traditional computer chips use bits to store data in values of 1 where the bit is switched on, and a 0 value where the bit is switched off. Quantum computing uses qubits, which can be switched on or off at the same time or somewhere in between. This is known as a superposition.

A traditional computer trying to find the way from A to B could only try a single path at any one time until it found the path; however, quantum computing could try every path at the same time. Quantum computing will make cracking encryption much faster and, at this moment in time, Google has created a quantum computer that is 53 qubits, known as Sycamore, that made calculations in a few minutes that would have taken an earlier supercomputer 10,000 years to calculate. Post-quantum computing could see a very powerful computer with massive qubits using Shor's algorithm to break PKI technology.