Heralded quantum network coding of multi-particle states based on quantum time-bin multiplexing

Bing-Xin Liu, Yu-Guang Yang, Guang-Bao Xu, Dong-Huan Jiang, Yi-Hua Zhou, Wei-Min Shi and Dan Li

Physica A: Statistical Mechanics and its Applications, 2024, vol. 639, issue C

Abstract: Quantum network coding can effectively alleviate bottlenecks in quantum networks thus improving the transmission efficiency and the throughput of the quantum network. Although various quantum network coding protocols have been constructed, most of them focus mainly on addressing the communication congestion issue of simultaneously transmitting single-qubit states via the bottleneck channel in quantum networks. In this paper, a protocol for the quantum two-pair unicast transmission of multi-particle states using quantum time-bin multiplexing is proposed. Parallel entanglement is established in a heralded way between two-dimensional quantum memories (QMs) of intermediate nodes by transmitting a high-dimensional encoded single photon via the bottleneck channel. Then the quantum unicast transmission of multi-particle states can be achieved by using quantum teleportation and the resultant entangled pairs. Additionally, a security enhanced protocol is presented when dishonest intermediate nodes or outside eavesdroppers are taken into account. No alternative measurements are needed to check security. This makes the present protocol cost-effective and efficient. Compared with existing methods, no pre-shared entangled states are required. This provides a new perspective for the development of quantum networks.

Keywords: Quantum network coding; Quantum entanglement; Quantum time-bin multiplexing; Quantum teleportation (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:639:y:2024:i:c:s0378437124001924

DOI: 10.1016/j.physa.2024.129683

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