ENTANGLEMENT BETWEEN CHARGE AND FLUX QUBITS
ENTANGLEMENT BETWEEN CHARGE AND FLUX QUBITS
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DOI：
10.1142/s0217984913502308
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发表时间：
2013-12
影响因子：
1.9
通讯作者：
Q. Liao;Xin Liu;M. Ahmad
中科院分区：
文献类型：
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作者：
Q. Liao;Xin Liu;M. Ahmad
根据X. L. He等人[Phys.Rev.B76（2007）024517]，我们研究了电荷和通量量子比特之间最大纠缠态的产生。结果表明，在这种情况下，可以产生宏观的Einstein-Podolsky-罗森（EPR）对，并且这种纠缠可以是长寿命的.由于大约瑟夫森结仅被虚拟地激发，因此没有量子信息将从电荷和通量量子比特转移到大约瑟夫森结。基于强感应耦合，可以实现快速纠缠操作。
Following the scheme proposed by X. L. He et al. [Phys. Rev. B76 (2007) 024517], we investigate the generation of a maximally entangled state between the charge and flux qubits. It is shown that macroscopic Einstein–Podolsky–Rosen (EPR) pairs can be created and the entanglement can be long-lived. Since the large Josephson junction is only virtually excited, no quantum information will be transferred from the charge and flux qubits to the large Josephson junction. Based on the strong inductive coupling, a fast entanglement operation can be achieved.