Cooperative ordering in lattices of interacting two-level dipoles
Cooperative ordering in lattices of interacting two-level dipoles
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DOI：
10.1103/physreva.92.063822
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发表时间：
2015-12-14
影响因子：
2.9
通讯作者：
Adams, Charles S.
中科院分区：
文献类型：
--
作者：
Bettles, Robert J.;Gardiner, Simon A.;Adams, Charles S.
利用经典电动力学模拟，我们研究了受驱动的二能级偶极子的规则单分子层的合作行为。偶极响应的结果从许多合作的本征模的干扰，每个频率从单个谐振偶极子的情况下，并与修改的寿命，由于偶极子之间的相互作用。特别令人感兴趣的是戈薇晶格，其中半规则的几何形状允许同时激发两个主导模式，一个强烈的次辐射，导致电磁感应的类双能级系统中的干涉。干扰模式与铁电和反铁电有序交替晶格行长程相互作用。
We investigate the cooperative behavior of regular monolayers of driven two-level dipoles, using classical electrodynamics simulations. The dipolar response results from the interference of many cooperative eigenmodes, each frequency-shifted from the single resonant dipole case, and with a modified lifetime, due to the interactions between dipoles. Of particular interest is the kagome lattice, where the semiregular geometry permits simultaneous excitation of two dominant modes, one strongly subradiant, leading to an electromagnetically induced transparencylike interference in a two-level system. The interfering modes are associated with ferroelectric and antiferroelectric ordering in alternate lattice rows with long-range interactions.