"Quantum cryptography" aims to achieve unbreakable security for data transmission by utilizing the principles of quantum mechanics. This technology allows for the generation of secure keys that can detect eavesdropping; any attempt to intercept the communication alters the quantum state, alerting the parties involved. The most prominent method of quantum cryptography is Quantum Key Distribution (QKD), which ensures that keys exchanged between parties remain confidential and resistant to threats posed by quantum computers. Thus, quantum cryptography represents a significant leap toward enhancing data security in communications.