Quantum computing is a type of computation whose operations can harness the phenomena of quantum mechanics, such as superposition, interference, and entanglement

Devices that perform quantum computations are known as quantum computers.

Quantum computers are machines that use the properties of quantum physics to store data and perform computations.

This can be extremely advantageous for certain tasks where they could vastly outperform even our best supercomputers.

Classical computers, which include smartphones and laptops, encode information in binary “bits” that can either be 0s or 1s. In a quantum computer, the basic unit of memory is a quantum bit or qubit.

Qubits are made using physical systems, such as the spin of an electron or the orientation of a photon.

In a quantum computer, the basic unit of memory is a quantum bit or qubit.

eight bits is enough for a classical computer to represent any number between 0 and 255

In quantum computing, a qubit or quantum bit is a basic unit of quantum information—the quantum version of the classic binary bit physically realized with a two-state device.

A pure qubit state is a coherent superposition of the basis states.