Evaluation of an Enhanced Secure Quantum Communication Approach

Tiancheng Wang, Tsuyoshi Sasaki Usuda

Abstract Recently, we proposed an amplitude-shift keying asymmetric quantum communication system and evaluated its reliability when using the quasi-Bell state and two-mode squeezed vacuum state (TSVS) as an entangled light source. In this paper, we evaluate the security of the system and find that either security or reliability can be enhanced depending on the entangled light sources. We also consider an approach to enhance the security of the system as well as its reliability by increasing the number of signal modes. Interestingly, we find that the quasi-Bell state always performs better than the TSVS under certain conditions.

Ri‐Gui Zhou, Xiaoxue Zhang, Lin-Tao Du

Jincheng Zhang

Quantum entanglement information encoding protocol is a novel communication protocol that leverages the unique properties of quantum entanglement to establish secure communication. This protocol focuses on designing a communication system that utilizes entanglement as a cornerstone for enhanced security, addressing current limitations in existing quantum communication technologies. The core mechanism involves utilizing entanglement for information transfer, complemented by a rigorous study of quantum vulnerability to bolster security. The study aims to comprehensively evaluate the protocol's effectiveness and identify potential areas for improvement.

Saee Desai, Priyanka More, Shubham Deshpande +2 more

Shibin Zhang, Zhihai Xie, Yifen Yin +7 more

Trust is the premise and foundation of secure communication, no matter in the quantum communication or classical communication. In fact, the existing quantum secure communication protocols and technologies are implicitly related to trust; or assume some trust premise in advance; or create or obtain a trust relationship. This paper studies on quantum trust model using node trust evaluation based on author's own research achievements. We introduce the trust management into quantum communication network to build secure trusted quantum communication network based on evaluating the trust values of nodes, which are used to evaluate the reliability of each user. We put forward a scheme of quantum trust model based on node trust evaluation, and describe the thought and process of trust evaluation in detail based on the principles of quantum entanglement and quantum teleportation. We analyze the feasibility and safety of this scheme, which provides a new thinking and method for establishing a credible secure quantum communication network.