The Weird and Wonderful World of the Qubit

3.2.1 The Weird and Wonderful World of the Qubit

In this section we will introduce you to the qubit. A qubit (pronounced “cue-bit” and short for quantum bit) is the physical carrier of quantum information; in other words, It is the quantum version of a bit, and is how quantum computing is done.

By the end of this section you will have a basic understanding of

•          Qubits and their measurements

•          Excited states

•          Superpositions of qubit states

•          The Bloch sphere representation of a qubit

•          Decoherence