Q. Which one of the following is the context in which the term “qubit” is mentioned?
Exp) Option b is the correct answer.
A qubit (or quantum bit) is the quantum mechanical analogue of a classical bit. In classical computing the information is encoded in bits, where each bit can have the value zero or one.
Just like a binary bit is the basic unit of information in classical (or traditional) computing, a qubit (or quantum bit) is the basic unit of information in quantum computing.
In quantum computing the information is encoded in qubits. A qubit is a two-level quantum system where the two basis qubit states are usually written as 0 and 1. A qubit can be in state 0 or 1 or (unlike a classical bit) in a linear combination of both states. The name of this phenomenon is superposition.
Source: https://www.quantum-inspire.com/kbase/what-is-a-qubit/
