Quantum computing is a new approach to computing that utilizes quantum mechanics to perform operations. It has the potential to solve problems that are beyond the reach of classical computers.

Quantum bits, or qubits, are the building blocks of quantum computing. They can be in multiple states at once, allowing for parallel computation. Superposition is a quantum mechanical principle that allows a qubit to exist in two states at once.

Entanglement is another quantum mechanical principle where two qubits can be linked together, such that the state of one qubit affects the state of the other.

Quantum computing has been developing since the 1980s. However, it is only in recent years that advances in technology have made quantum computing feasible.

Quantum computing has the potential to break many encryption methods used to protect sensitive information. However, it can also be used to develop new, more secure methods of encryption.

Quantum supremacy is the milestone where a quantum computer can perform a task that is beyond the capability of classical computers. Google claimed to achieve quantum supremacy in 2019.

The development of quantum computing is expected to continue, with companies and governments investing heavily in research and development.