Spatially Structured Optical Effects in a Four-Level Quantum System Near a Plasmonic Nanostructure,Annalen Der Physik

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Spatially Structured Optical Effects in a Four-Level Quantum System Near a Plasmonic Nanostructure
Annalen Der Physik ( IF 2.2 ) Pub Date : 2021-07-24 , DOI: 10.1002/andp.202100117
Hamid R. Hamedi ₁ , Vassilios Yannopapas ₂ , Emmanuel Paspalakis ₃

Affiliation

The light–matter interaction for a four-level double-V-type quantum system interacting with a pair of weak probe fields while located near a 2D array of metal-coated dielectric nanospheres is studied. A situation is considered in which one of the probe field carries an optical vortex, that is, an electromagnetic field with optical angular momentum, and the other probe field has no vortex. It is demonstrated that due to the phase sensitivity of the closed-loop double V-type quantum system, the linear and nonlinear susceptibility of the non-vortex probe beam depends on the azimuthal angle and orbital angular momentum (OAM) of the vortex probe beam. This feature is missing in an open four-level double V-type quantum system interacting with free-space vacuum, as no quantum interference occurs in this case. The azimuthal dependence of optical susceptibility of the quantum system is used to determine the regions of spatially structured transparency.

中文翻译：

等离子体纳米结构附近四能级量子系统中的空间结构光学效应

研究了位于金属涂层介电纳米球二维阵列附近时，四能级双 V 型量子系统与一对弱探测场相互作用的光-物质相互作用。考虑其中一个探测场携带光学涡旋，即具有光学角动量的电磁场，而另一个探测场没有涡旋的情况。证明由于闭环双V型量子系统的相位敏感性，非涡旋探测光束的线性和非线性磁化率取决于涡旋探测光束的方位角和轨道角动量（OAM） . 在与自由空间真空相互作用的开放四能级双 V 型量子系统中缺少此功能，因为在这种情况下不会发生量子干扰。

更新日期：2021-07-24

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