Quantum Cryptography What is Quantum Cryptography? Quantum cryptography uses principles of quantum mechanics to secure communication, making it theoretically immune to hacking and eavesdropping. Explanation Quantum cryptography relies on quantum key distribution (QKD), which ensures that any attempt to intercept the data changes its state, alerting the parties involved. It offers unprecedented security for sensitive information. Practical Example of Quantum Cryptography A government agency adopts quantum cryptography to secure classified communications, ensuring protection against advanced cyber threats.