Quantum Entanglement and Its Implications for Information Theory

This paper explores the profound connection between quantum entanglement and classical information theory, proposing new paradigms for secure communication. It delves into the foundational principles of quantum mechanics that allow for entangled particles to remain correlated over vast distances, a phenomenon Einstein famously called "spooky action at a distance." We analyze the security proofs of quantum key distribution (QKD) protocols that leverage entanglement and compare their theoretical robustness against eavesdropping with classical cryptographic methods. Furthermore, the paper discusses potential technological hurdles in implementing large-scale quantum communication networks and speculates on the future landscape of a quantum internet.