"Quantum key distribution" enhances security in cryptographic practices by enabling secure communication channels that are theoretically invulnerable to eavesdropping. It relies on the principles of quantum mechanics, using quantum bits (qubits) to transmit encryption keys. If an unauthorized party attempts to intercept the key, the quantum states will change, alerting the communicating parties to potential breaches. This innovation promises to revolutionize encryption methods, providing a robust framework for secure data exchange.