物理
偶极子
圆极化
极化(电化学)
线极化
光子
光学
电介质
纳米光子学
近场和远场
电场
共发射极
原子物理学
光电子学
量子力学
化学
激光器
物理化学
微带线
作者
Martin Neugebauer,Peter Banzer,Sergey Nechayev
出处
期刊:Science Advances
[American Association for the Advancement of Science (AAAS)]
日期:2019-06-01
卷期号:5 (6)
被引量:26
标识
DOI:10.1126/sciadv.aav7588
摘要
Controlling the polarization state and the propagation direction of photons is a fundamental prerequisite for many nanophotonic devices and a precursor for future on-chip communication, where the emission properties of individual emitters are particularly relevant. Here, we report on the emission of partially circularly polarized photons by a linear dipole. The underlying effect is linked to the near-field part of the angular spectrum of the dipole, and it occurs in any type of linear dipole emitter, ranging from atoms and quantum dots to molecules and dipole-like antennas. We experimentally observe it by near-field to far-field transformation at a planar dielectric interface and numerically demonstrate the utility of this phenomenon by coupling the circularly polarized light to the individual paths of crossing waveguides.
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