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arXiv 2009.00322physics.opticscond-mat.mtrl-sci
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新型杂化Anapole态的理论、观测和超快响应

Theory, observation and ultrafast response of novel hybrid anapole states

Adrià Canós Valero, Egor A. Gurvitz, Fedor A. Benimetskiy, Dmitry A. Pidgayko, Anton Samusev, Andrey B. Evlyukhin, Dmitrii Redka, Michael. I. Tribelsky, Mohsen … 展开作者

Adrià Canós Valero, Egor A. Gurvitz, Fedor A. Benimetskiy, Dmitry A. Pidgayko, Anton Samusev, Andrey B. Evlyukhin, Dmitrii Redka, Michael. I. Tribelsky, Mohsen Rahmani, Khosro Zangeneh Kamali, Alexander A. Pavlov, Andrey E. Miroshnichenko, Alexander S. Shalin

摘要:

现代纳米光子学已经见证了“电偶极”的兴起,电偶极和环形电偶极的相消干涉,被积极地用于消除来自纳米谐振器的电偶极辐射。然而,麦克斯韦方程组的固有对偶性表明了“磁偶极”的有趣可能性,涉及磁偶极子和磁环形偶极子的非辐射成分。在这里,我们预测,制造和观察实验通过一系列的暗场光谱测量的混合anapole的混合电和磁字符,与所有占主导地位的多极子被抑制的纳米圆柱体的环形条款。我们深入研究了这种奇异的电流配置在静态和瞬态制度的物理,并预测了一些超快现象发生在亚ps时间后的混合anapole故障。基于前面的理论,我们设计了一个非惠更斯超颖表面具有双重功能:完美的透明度在静态政权和可控的超短脉冲拍在瞬态。

英文摘要:

Modern nanophotonics has witnessed the rise of "electric anapoles", destructive interferences of electric dipoles and toroidal electric dipoles, actively exploited to cancel electric dipole radiation from nanoresonators. However, the inherent duality of Maxwell's equations suggests the intriguing possibility of "magnetic anapoles", involving a nonradiating composition of a magnetic dipole and a magnetic toroidal dipole. Here, we predict, fabricate and observe experimentally via a series of dark field spectroscopy measurements a hybrid anapole of mixed electric and magnetic character, with all the dominant multipoles being suppressed by the toroidal terms in a nanocylinder. We delve into the physics of such exotic current configurations in the stationary and transient regimes and predict a number of ultrafast phenomena taking place within sub-ps times after the breakdown of the hybrid anapole. Based on the preceding theory, we design a non-Huygens metasurface featuring a dual functionality: perfect transparency in the stationary regime and controllable ultrashort pulse beatings in the transient.

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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