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An Asynchronous Transport Protocol for Quantum Data Networks
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DOI：10.1109/JSAC.2024.3380086.png)
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Abstract
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Quantum Data Networks (QDNs) are vital to building Distributed Quantum Computing (DQC) systems. Though several communication protocols have been proposed for QDNs, most of them are at the network layer or below. The only transport layer protocol used batch processing of requests for End-to-End (E2E) quantum data transmission. It not only limits the quantum resource utilization, more importantly, it cannot guarantee reliable E2E quantum data transmission. In this paper, we propose the first asynchronous transportation layer protocol, called AQTP, for QDNs to achieve high-speed and reliable E2E quantum data transmission. AQTP has several distinct features: 1) each quantum node locally allocates quantum resources in order to improve scalability; 2) requests are processed in an asynchronous manner, which results in a higher quantum resource utilization; and 3) it ensures reliable data transmission even if the teleportation operations fail. Extensive simulations show that compared with a batch processed transport layer protocol, AQTP can increase the network throughput by up to 82.97%, and reduce the Average Task Completion Time (ATCT) of DQC tasks by up to 94.69%.
Keywords:
Qubit
Reliability
Teleportation
Quantum computing
Repeaters
Quantum entanglement
Data communication
Quantum data networks (QDNs)
quantum transport protocol (QTP)
asynchronous operation
end-to-end (E2E) reliability
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