Realizable spin models and entanglement dynamics in superconducting flux qubit systems

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dc.creatorShi, Qian Qian
dc.creatorCho, Sam Young
dc.creatorLi, Bo
dc.creatorKim, Mun Dae
dc.date2007-06-16
dc.date.accessioned2026-07-07T08:10:38Z
dc.date.available2026-07-07T08:10:38Z
dc.descriptionRealizable spin models are investigated in a two superconducting flux qubit system. It is shown that a specific adjustment of system parameters in the two flux qubit system makes it possible to realize an artificial two-spin system that cannot be found naturally. For the artificial two-spin systems, time evolution of a prepared quantum state is discussed to quantify quantum entanglement dynamics. The concurrence and fidelity as a function of time are shown to reveal a characteristic entanglement dynamics of the artificial spin systems. It is found that the unentangled input state can evolute to be a maximally entangled output state periodically due to the exchange interactions induced by two-qubit flipping tunneling processes while single-qubit flipping tunneling processes plays a role of magnetic fields for the artificial spins.
dc.description5 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/0706.2402
dc.identifierhttp://arxiv.org/abs/0706.2402
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/131879
dc.subjectMesoscale and Nanoscale Physics
dc.titleRealizable spin models and entanglement dynamics in superconducting flux qubit systems
dc.typetext

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