Spin-Polarized Photon Emission by Resonant Multipolar Nanoantennas
Spin-Polarized Photon Emission by Resonant Multipolar Nanoantennas
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DOI：
10.1021/ph500288u
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发表时间：
2014-11-01
期刊：
影响因子：
7
通讯作者：
Kivshar, Yuri S.
中科院分区：
文献类型：
--
作者：
Kruk, Sergey S.;Decker, Manuel;Kivshar, Yuri S.
我们展示了纳米级的自旋控制的原子系统耦合到一个紧凑的等离子体纳米天线，支持锁相干涉不同的多极矩在一个单一的共振发射的光子。在实验中，我们观察到手性光发射量子点在分裂环共振纳米天线，其中所发射的光子的自旋被锁定到它们的横向动量。我们证明了偏振可以从线性变化到椭圆，椭圆率达到+/- 0.5，发射到纳米天线对称平面的相对半部分。
We demonstrate nanoscale spin control of photons emitted by an atomic system coupled to a compact plasmonic nanoantenna supporting phase-locked interference of different multipolar moments within a single resonance. Experimentally we observe chiral light emission from quantum dots over split-ring resonant nanoantennas, where the spin of the emitted photons is locked to their transverse momentum. We demonstrate that the polarization can vary from linear to elliptical with ellipticity reaching +/- 0.5 for emission into opposite halves of the symmetry plane of the nanoantenna.