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An analysis of concurrence entanglement measure and quantum fisher information of quantum communication networks of two-qubits

机译:两比特量子通信网络的并发纠缠量度和量子费舍尔信息分析

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Quantum entanglement is one of key concepts in quantum communication engineering. Ordering the quantum systems according to their entanglement measures is a popular problem of the field. For two level (qubit) systems of two particles, state ordering has been studied with respect to well-known entanglement measures such as Concurrence, Negativity and Relative Entropy of Entanglement (REE) [1-5]. In this work, we study the state ordering of the two-qubit systems with respect to Quantum Fisher Information vs. Concurrence. In particular, constructing 1K random states and calculating their Concurrences and Negativities, we obtain the orderings of the states by comparing these results with Quantum Fisher Information values and present our results which are interesting when compared to that of two-level systems.
机译:量子纠缠是量子通信工程中的关键概念之一。根据量子系统的纠缠度对量子系统进行排序是该领域的一个普遍问题。对于两个粒子的两个能级(量子位)系统,研究了关于纠缠度的并发状态,负性和缠结相对熵(REE)[1-5]的状态排序。在这项工作中,我们研究了关于量子Fisher信息与并发的两比特系统的状态排序。特别是,构造1K随机状态并计算它们的并发性和负性时,我们通过将这些结果与Quantum Fisher Information值进行比较来获得状态的顺序,并提出与两级系统相比有趣的结果。

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