In this paper, we investigate the decay of entanglement of multiqubit randomized entangled states. We start by introducing separable states of collection of n independent qubits. The randomized entangled mixed states are generated from factorisable initial states by coupling the qubits through randomized entangling operators. The bipartite and multipartite entanglement of randomized states are analyzed by employing respectively the concepts of the negativity and the genuine multiparticle negativity as measures of amount of entanglement. The decreases of the amount of entanglement of randomized entangled mixed states is studied in terms of the noisy parameter p.

中文翻译：

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随机多量子位混合态的负性衰减

在本文中，我们研究了多量子位随机纠缠态的纠缠衰减。我们首先介绍n个独立qubit集合的可分离状态。通过可分解的初始状态通过随机纠缠算子耦合量子位来生成随机纠缠混合态。通过分别采用负性和真正的多粒子负性作为缠结量的量度，分析了随机状态的两部分和多部分纠缠。根据噪声参数p研究了随机纠缠混合态纠缠量的减小。