量子光学学报, 2012, 18 (2): 136, 网络出版: 2012-06-08
小世界网络中的量子纠缠渗流
Entanglement Percolation in Small-World Quantum Networks
量子网络 纠缠渗流 小世界网络 平均距离 聚集系数 度分布 quantum networks entanglement percolation small world network average distance clustering coefficient degree distribution
摘要
本文研究了小世界复杂网络中的长程量子纠缠态的制备。提出了量子纠缠渗流优化网络量子通信的方案。通过在经典纠缠渗流协议(CEP)中引入局域化的“target-swap”量子操作,形成量子纠缠渗流协议(QEP)。研究表明QEP在长程纠缠制备的效能方面明显优于CEP,通过度分布变化的分析解释了QEP具有优势的原因。
Abstract
Long-distance entanglement establishment is investigated on small-world complex network topologies. The quantum entanglement percolation (QEP) protocol is proposed to optimize networked quantum communications. If the additional local "target-swap" quantum operations are performed in the classical entanglement percolation (CEP) protocol, the QEP can be obtained. The QEP has great advantage over CEP with respect to the efficiency of long-distance entanglement establishment. The advantage may be due to the changes of the degree distributions in the QEP.
周磊, 吴亮, 朱士群. 小世界网络中的量子纠缠渗流[J]. 量子光学学报, 2012, 18(2): 136. ZHOU Lei, WU Liang, ZHU Shi-qun. Entanglement Percolation in Small-World Quantum Networks[J]. Acta Sinica Quantum Optica, 2012, 18(2): 136.
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