Enhanced Quantum Key Distribution using Hybrid Channels and Natural Random Numbers

Since the introduction of quantum computation by Richard Feynman in 1982, Quantum computation has shown exemplary results in various applications of computer science including unstructured database search, factorization, molecular simulations to name a few. Some of the recent developments include quantum machine learning, quantum neural networks, quantum walks on graphs, fault tolerant scalable quantum computers using error correction codes etc. One of the crucial modern applications of quantum information is quantum cryptography and secure key distribution over quantum channels which have several advantages over classical channels, especially detection of eavesdropping. Based on such properties of quantum systems and quantum channels, In this paper we propose three secure key distribution protocols based on a blend of classical and quantum channels. Also the proposed protocols exploits the property of quantum computers to generate natural random numbers that can be easily transmitted using a single qubit over a quantum channel and can be used for distributing keys to the involved parties in a communication network.