Overly simplified, but in classical computing, a bit is an abstraction representing a 0 or 1. In quantum computing, a bit IS the electron (or some other particl

Overly simplified, but in classical computing, a bit is an abstraction representing a 0 or 1. In quantum computing, a bit IS the electron (or some other particle). And electrons are weird and can behave in very surprising ways. Quantum computers are controlling these electrons allowing to do things that classical computers can't. One example of such thing is Shor's algorithm which, taken from wikipedia, "is almost exponentially faster than the most efficient known classical factoring algorithm".