Secure and Efficient Entanglement Distribution Protocol for Near-Term Quantum Internet

• URL: http://arxiv.org/abs/2312.05775v1
• Date: Sun, 10 Dec 2023 05:38:40 GMT
• Title: Secure and Efficient Entanglement Distribution Protocol for Near-Term Quantum Internet
• Authors: Nicholas Skjellum, Mohamed Shaban, and Muhammad Ismail
• Abstract summary: This paper introduces a protocol to distribute entanglements among quantum devices within classical-quantum networks with limited quantum links. The proposed protocol uses entanglement swapping to distribute entanglements efficiently in a butterfly network. We also propose a protocol for securing entanglement distribution against malicious entanglements using quantum state encoding through rotation.
• Score: 1.7562083088615124
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: Quantum information technology has the potential to revolutionize computing, communications, and security. To fully realize its potential, quantum processors with millions of qubits are needed, which is still far from being accomplished. Thus, it is important to establish quantum networks to enable distributed quantum computing to leverage existing and near-term quantum processors into more powerful resources. This paper introduces a protocol to distribute entanglements among quantum devices within classical-quantum networks with limited quantum links, enabling more efficient quantum teleportation in near-term hybrid networks. The proposed protocol uses entanglement swapping to distribute entanglements efficiently in a butterfly network, then classical network coding is applied to enable quantum teleportation while overcoming network bottlenecks and minimizing qubit requirements for individual nodes. Experimental results show that the proposed protocol requires quantum resources that scale linearly with network size, with individual nodes only requiring a fixed number of qubits. For small network sizes of up to three transceiver pairs, the proposed protocol outperforms the benchmark by using 17% fewer qubit resources, achieving 8.8% higher accuracy, and with a 35% faster simulation time. The percentage improvement increases significantly for large network sizes. We also propose a protocol for securing entanglement distribution against malicious entanglements using quantum state encoding through rotation. Our analysis shows that this method requires no communication overhead and reduces the chance of a malicious node retrieving a quantum state to 7.2%. The achieved results point toward a protocol that enables a highly scalable, efficient, and secure near-term quantum Internet.

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