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Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)

The Effects of Delay in Aggregated Quantum Networks

Nicoló Lo Piparo, William J. Munro, Kae Nemoto

Published Aug 4, 2024• 0 citations
Publisher

Abstract

Quantum aggregated networks allow remote users to enhance their communication rate while introducing a detrimental temporal delay on the transmitted information. Here, we show a method to mitigate such a delay increasing the system's performance.
DOI
10.1109/cleo-pr60912.2024.10676624

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When packets of information go through a network, each packet can be transmitted on a different route. The aggregation of quantum network provides a potential for us to use communication channels more efficiently and may contribute robust transmissions of quantum information with less quantum resources. To evaluate this possibility, we use multiplexing of independent quantum channels to distribute quantum error correction over the network. In this talk we also apply spatial-temporal single photon multiplexing and observe a significant saving in the quantum communication resources, and further we discuss how such quantum networks differ from their classical counterparts.
Quantum networking allows the transmission of information in ways unavailable in the classical world. The information encoded in a single qubit can now be split and transmitted in a coherent way over different routes. This aggregation allows information to be transmitted in a fault tolerant way between different parts of the quantum network (or the future internet), even when that is not achievable with a single path approach. It is a quantum phenomenon not available in conventional telecommunication networks either. We show how the multiplexing of independent quantum channels allows a distributed form of quantum error correction to protect the transmission of quantum information between nodes or users of a quantum network. Combined with spatial-temporal single-photon multiplexing, we observe a significant drop in network resources required to transmit that quantum signal, even when only two channels are involved. This work goes far beyond the concepts of channel capacities and shows how quantum networking may operate in the future.
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