Simulations and Theoretical Background: Quantum Entanglement in Photonic Quantum Computing and Cryptography

Quantum entanglement is a cornerstone of quantum mechanics and has profound implications for quantum computing and cryptography. This article explores the theoretical underpinnings of quantum entanglement in photonic systems, its application in quantum computing with qubits, and its role in quantum cryptography. We present the mathematical models and verification through simulations, including Bell test experiments and Quantum Key Distribution (QKD) protocols. The results shows the feasibility of photonic qubits in secure communication and highlight future prospects for practical applications.