Quantum Key Distribution Theorems

Quantum Key Distribution (QKD) theorems demonstrate that using principles of quantum mechanics, two parties can generate and share a secret cryptographic key with security guaranteed by the laws of physics. If an eavesdropper tries to intercept the key, quantum particles behave in ways that reveal their presence, allowing the communicating parties to detect and discard compromised keys. This ensures that any attempt at interception is noticeable, making QKD fundamentally secure against hacking, unlike traditional methods relying on computational difficulty. These theorems underpin quantum communication's potential for ultra-secure data exchange.