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arXiv 1901.00322quant-ph
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耦合驱动的两个相互作用quutrit系统的Landau-Majorana-Stuckelberg-Zener动力学

Landau-Majorana-Stuckelberg-Zener dynamics driven by coupling for two interacting qutrit systems

R. Grimaudo, N. V. Vitanov, A. Messina

摘要:

本文分析和求解了含时双相互作用自旋夸克模型。这两个相互作用的qutrits受到纵向场随时间线性变化的朗道-马约拉纳-Stückelberg-Zener(LMSZ)的情况。虽然没有横向场,我们表明LMSZ跃迁的发生,两个自旋量子之间的耦合的帮助。这种物理效应允许通过实验估计自旋之间的耦合强度,并允许通过适当地设置斜坡的斜率来产生两个量子点的纠缠态。此外,还揭示了局域和非局域控制的可能性以及两个量子态暗态的存在。通过引入随机波动场分量以及非厄米项的哈密顿模型,也考虑了来自嘈杂的周围环境的影响。

英文摘要:

A time-dependent two interacting spin-qutrit model is analysed and solved. The two interacting qutrits are subjected to a longitudinal field linearly varying over time as in the Landau-Majorana-Stückelberg-Zener (LMSZ) scenario. Although a transverse field is absent, we show the occurrence of LMSZ transitions assisted by the coupling between the two spin-qutrits. Such a physical effects permits to estimate experimentally the coupling strength between the spins and allows the generation of entangled states of the two qutrits by appropriately setting the slope of the ramp. Furthermore, the possibility of local and non-local control as well as the existence of dark states of the two qutrits have been brought to light. Effects stemming from a noisy surrounding environment are also taken into account by introducing a random fluctuating field component as well as non-Hermitian terms in the Hamiltonian model.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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