
Chapter 4
Properties of Qubits
The mathematical foundations built on motivation from experiments being
in place, we now look at the properties of qubits that distinguish them from
classical bits, and also which make their manipulation and behavior somewhat
counter-intuitive.
In this chapter we will list some properties of a quantum system that are
peculiar and touch on the so-called weirdness of quantum mechanics. We will
also take a peek into the foundational aspects of the theory that are being
battled out to this day.
4.1 The Bloch Sphere Representation of a Qubit
A generic qubit could have a non-definite state expressed as a superposition
|ψi = α|0