A Model for Immune Noise Towards High-Fidelity Quantum Secure Communication
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In this paper, we examine unified framework of high-fidelity entangled quantum secure Communication channels under noise. We adopt system evolution density matrix to calculate the individual and average fidelity of initial states. We adjust intensity levels of noise with respect to the surroundings. Based on quantum entanglement and unitary transformation, we develop and implement a model for four types of noise that act on the quantum bits at different intensity levels. We analyze the model with quantum bits produced against the immune noise based on density matrix. Our propose model for immune noise is not only efficient and robust, but also achieves high-fidelity for secure quantum communication.
KeywordsImmune noise model Quantum secure communication Quantum fidelity Immune noise
This work is supported by Fundamental Research Funds for the Central Universities (ZYGX2014J051).
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