What is a Quantum Computer ?
A quantum computer is a type of computer that uses the principles of quantum mechanics to perform calculations. Unlike classical computers, which use bits (representing 0 or 1) as the smallest unit of information, quantum computers use qubits . Qubits can represent both 0 and 1 simultaneously due to a property called superposition , allowing quantum computers to process a vast number of possibilities at once. Quantum computers also leverage entanglement , another quantum phenomenon where qubits become linked, meaning the state of one qubit is dependent on the state of another, regardless of distance. These unique properties give quantum computers the potential to solve certain complex problems much faster than classical computers. They are still in early development stages but are expected to revolutionize fields like cryptography, drug discovery, optimization, and materials science once they become more practical for wide use. Quantum computing can be categorized into three main ...