Quantum cryptography and a quantum key distribution protocol

الملخص EN

In this article, a short review on the feature of reality and locality in quantum optics is given.

The Bell inequality and the Bell states are introduced to show their direct use in quantum computer and quantum teleportation.

Moreover, quantum cryptography is discussed in some details regarding basic ideas and practical considerations.

In addition, a case study involving distillation of a quantum key based on the given fundamentals is presented and discussed.