Nonlocal Network Coding in Interference Channels

被引:4
作者
Yun, Jiyoung [1 ]
Rai, Ashutosh [1 ,2 ]
Bae, Joonwoo [1 ]
机构
[1] Korea Adv Inst Sci & Technol KAIST, Sch Elect Engn, 291 Daehak Ro, Daejeon 34141, South Korea
[2] Slovak Acad Sci, Inst Phys, Bratislava 84511, Slovakia
基金
新加坡国家研究基金会;
关键词
25;
D O I
10.1103/PhysRevLett.125.150502
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
In a network, a channel introduces correlations to the parties that aim to establish a communication protocol. We present a framework of nonlocal network coding by exploiting a Bell scenario and show the usefulness of nonlocal and quantum resources in network coding. Two-sender and two-receiver interference channels are considered, for which network coding is characterized by two-input and four-outcome Bell scenarios. It is shown that nonsignaling correlations lead to strictly higher channel capacities than quantum correlations in general. This also holds true for quantum and local correlations: network coding with quantum resources shows a strictly higher channel capacity than local ones. It turns out, however, that more nonlocality does not necessarily imply a higher channel capacity. The framework can be generally applied to network communication protocols.
引用
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页数:5
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