This superposition allows qubits to hold exponentially more information than classical bits, resulting in the exponential computational power of quantum computers.
The qubit is the building block of quantum computing. It is the basic unit of information in a quantum system and is analogous to a classical bit. However, unlike classical bits, which can only represent a 0 or a 1, qubits can exist in a superposition of states, representing a combination of 0 and 1 simultaneously. This superposition allows qubits to hold exponentially more information than classical bits, resulting in the exponential computational power of quantum computers.