Multiparticle entanglement under the influence of decoherence
Multiparticle entanglement under the influence of decoherence
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DOI：
10.1103/physreva.78.060301
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发表时间：
2008-05
影响因子：
2.9
通讯作者：
O. Gühne;F. Bodoky;Miriam Blaauboer
中科院分区：
文献类型：
--
作者：
O. Gühne;F. Bodoky;Miriam Blaauboer
我们提出了一种方法来确定的退相干的影响下，量子纠缠的几何测量量化的多粒子量子关联的衰减。在此基础上，我们比较了GHZ态、团簇态、W态和迪凯态四种量子比特纠缠态的鲁棒性，发现迪凯态的鲁棒性最强。最后，我们确定的几何测量解析衰减GHZ和集群状态的任意数量的量子比特。
We present a method to determine the decay of multiparticle quantum correlations as quantified by the geometric measure of entanglement under the influence of decoherence. With this, we compare the robustness of entanglement in GHZ-, cluster-, W- and Dicke states of four qubits and show that the Dicke state is most robust. Finally, we determine the geometric measure analytically for decaying GHZ and cluster states of an arbitrary number of qubits.