Multipartite entanglement percolation
Multipartite entanglement percolation
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DOI：
10.1103/physreva.81.032327
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发表时间：
2010-03-01
影响因子：
2.9
通讯作者：
Acin, A.
中科院分区：
文献类型：
--
作者：
Perseguers, S.;Cavalcanti, D.;Acin, A.
我们提出了一种基于多体测量的渗流策略来传播量子网络中的纠缠。我们考虑横跨在规则晶格上的网络，其键对应于纯但非最大纠缠的量子比特对，在节点处允许任何量子操作。尽管过去做了很大的努力，但只有几个晶格的渗流比标准的(经典)渗流有所改善，通常对键中的初始纠缠量有限制。相反，在初始纠缠的整个范围内，对于我们所考虑的每个晶格，多体纠缠渗流比经典的渗流协议以及所有已知的量子渗流协议都要好。最后，我们简要地展示了我们的思想在噪声网络中的应用。
We present a percolation strategy based on multipartite measurements to propagate entanglement in quantum networks. We consider networks spanned on regular lattices whose bonds correspond to pure but nonmaximally entangled pairs of qubits, with any quantum operation allowed at the nodes. Despite significant effort in the past, improvements over standard ( classical) percolation have been found for only a few lattices, often with restrictions on the initial amount of entanglement in the bonds. In contrast, multipartite entanglement percolation outperform the classical percolation protocols, as well as all previously known quantum ones, over the entire range of initial entanglement and for every lattice that we considered. Finally, we briefly show that our ideas also find application in noisy networks.