How Does a Quantum Computer Work?

How Does a Quantum Computer Work?
Jun 17, 2013
http://www.itworld.com/science/361331/science-class-how-quantum-computer-works

A quantum computer works in a totally different way from a classical computer.
Quantum bits or ‘qubits’ can exist in a superposition state of both zero and one simultaneously.
This means that a set of two qubits can be in a superposition of four states, which therefore require four numbers to uniquely identify the state.
So the amount of information stored in N qubits is two to the power of N classical bits.