Quantum computing takes advantage of the strange ability
of subatomic particles to exist in more than one state at any time. Due
to the way the tiniest of particles behave, operations can be done much
more quickly and use less energy than classical computers.
In
classical computing, a bit is a single piece of information that can
exist in two states – 1 or 0. Quantum computing uses quantum bits, or
'qubits' instead. These are quantum systems with two states. However,
unlike a usual bit, they can store much more information than just 1 or
0, because they can exist in any superposition of these values.
