Comparing classical and quantum bits
In this section, we will compare and review the building blocks of a classical bit and a few of the operations that are performed on them via classical gates. We will then learn about the fundamental unit of a quantum computer, the qubit, and how it is similar to the bit, yet due to its quantum computational principles, which we learned about in the previous chapter, has a larger computational space than the bit.
Reviewing the classical bit
Before we delve into what a quantum bit is and how it is used, let’s take a brief moment to refresh our memories about the classical bit. Just as the quantum bit is the fundamental building block of quantum algorithms, the bit has the same role in classical computational systems.
In computational systems, the bit is used to define a logical state, often referenced as either on or off, true or false, or the most commonly used option, 1 or 0. The transition between states can be applied physically...
