A digital computer both stores and processes information using bits, which can be either 0 or 1. Physically, a bit can be anything that has two distinct configurations: one represented by “0”, and the other represented by “1”. It could be a switch that is on or off, any other system with two distinct and distinguishable possibilities. In modern computing and communications, bits are represented by the absence or presence of an electrical signal, encoding “0” and “1” respectively.
So what are qubits?
The microscopic world
A quantum bit i.e qubit is the building blocks of quantum computing. Just like classical bits, a quantum bit must have two states: “0” and “1”. A quantum bit can also exist in superposition states, be subjected to incompatible measurements, and even be entangled with other quantum bits exhibiting the superposition and entanglement phenomenon. Because of these properties it is able to outshine its classical counterparts!
To build quantum computers and other quantum information technologies we need quantum objects . This allows us to match the demands of different quantum technologies to the advantages of each type of qubit. There are many aspects of it which we will be discovering later on.
