Generation of multipartite entangled states in Josephson architectures
Generation of multipartite entangled states in Josephson architectures
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DOI：
10.1103/physrevb.74.104503
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发表时间：
2006-04
影响因子：
3.7
通讯作者：
R. Migliore;K. Yuasa;H. Nakazato;A. Messina
中科院分区：
文献类型：
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作者：
R. Migliore;K. Yuasa;H. Nakazato;A. Messina
我们提出并分析了一种在电感耦合约瑟夫森通量量子位系统中生成多部分纠缠态的方案。量子位在整个过程中具有固定的特征频率，以尽量减少退相干效应，并且可以通过调节外部控制通量随意打开和关闭它们的感应耦合。在此框架内，我们将展示三个或更多量子位系统中的 $W$ 状态可以通过利用量子位的顺序一一耦合来生成，其中一个量子位扮演纠缠调解者的角色。
We propose and analyze a scheme for the generation of multipartite entangled states in a system of inductively coupled Josephson flux qubits. The qubits have fixed eigenfrequencies during the whole process in order to minimize decoherence effects and their inductive coupling can be turned on and off at will by tuning an external control flux. Within this framework, we will show that a $W$ state in a system of three or more qubits can be generated by exploiting the sequential one by one coupling of the qubits with one of them playing the role of an entanglement mediator.