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arXiv 1111.3459cond-mat.str-el
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光波导晶格中Hubbard-Holstein动力学的经典模拟

Classical simulation of the Hubbard-Holstein dynamics with optical waveguide lattices

Stefano Longhi, Giuseppe Della Valle

摘要:

基于光在工程光波导阵列中的输运,提出了一个描述两个关联电子与局域声子耦合动力学的双位点Hubbard-Holstein模型的经典模拟器.我们的光子模拟器能够将Fock空间中量子系统的时间动态映射到阵列的倏逝耦合波导中经典光波的空间传播中。特别是,在强关联制度的周期性的时间动力学,与具有相等的能量间距的Holstein极化子的激发,可以被可视化为一个周期性的自成像现象的光束沿波导阵列和广义布洛赫振荡的一个半无限的非均匀紧束缚晶格中的单个粒子的条款解释。

英文摘要:

A classical analog simulator of the two-site Hubbard-Holstein model, describing the dynamics of two correlated electrons coupled with local phonons, is proposed based on light transport in engineered optical waveguide arrays. Our photonic analog simulator enables to map the temporal dynamics of the quantum system in Fock space into spatial propagation of classical light waves in the evanescently-coupled waveguides of the array. In particular, in the strong correlation regime the periodic temporal dynamics, related to the excitation of Holstein polarons with equal energy spacing, can be visualized as a periodic self-imaging phenomenon of the light beam along the waveguide array and explained in terms of generalized Bloch oscillations of a single particle in a semi-infinite inhomogeneous tight-binding lattice.

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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