Quantum entanglement is a phenomenon that occurs when two or more particles are generated, interact, or share spatial proximity in such a way that the quantum state of each particle of the group cannot be described independently of the others. When two particles become entangled, they remain connected even when separated by vast distances. Key features of quantum entanglement include:

• Superposition: This is a state in which a quantum system can exist in multiple states simultaneously. Entanglement is a special kind of superposition that involves two separated locations in space.

• Correlations: Entangled particles exhibit correlations that are stronger than those predicted by classical physics. For example, measuring the state of one particle automatically tells you something about its companion, even when they are far apart.

• Applications: Entanglement has many applications in quantum information theory, including communication, computation, and cryptography.

Despite its potential applications, quantum entanglement cannot be used for faster-than-light communication. While it is a complex and counterintuitive phenomenon, entanglement is a fundamental aspect of quantum mechanics and an active area of research and development.