Journal
IEEE COMMUNICATIONS LETTERS
Volume 19, Issue 2, Pages 115-118Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LCOMM.2014.2379253
Keywords
Quantum multiple unicast problem; classical assistance; maxflow transmission; communication cost
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Funding
- NSFC [61272514, 61170272, 61121061, 61411146001]
- NCET [NCET-13-0681]
- National Development Foundation for Cryptological Research [MMJJ201401012]
- Fok Ying Tong Education Foundation [131067]
- China Scholarship Council
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Quantum network coding with classical assistance can transmit quantum information with fidelity one in error-free quantum channels. However, the dependency on classical network solutions leads to higher communication complexity and transmission congestion over a large-scale network with bottleneck channels. We find that certain types of quantum operation are sufficient to support multiple unicast sessions over the extended butterfly network. Furthermore, this construction decouples classical communication (assisting decoding information) from classical network solution. Based on this design, we propose an optimal protocol for this specific network, which significantly reduces the communication cost.
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