Quantum Network Security focuses on developing cryptographic systems resilient to quantum computing threats. Our research covers Quantum Key Distribution (QKD) for secure key exchange, Post-Quantum Cryptography (PQC) for quantum-resistant algorithms, and quantum-safe communication protocols. We also explore cryptography standards for future interoperability, benchmark PQC-enabled TLS in real-world scenarios, and integrate quantum-safe mechanisms into 5G/6G networks to protect next-generation communication systems.