تقرير
Chiral Light Emission from a Sphere Revealed by Nanoscale Relative Phase Mapping
| العنوان: | Chiral Light Emission from a Sphere Revealed by Nanoscale Relative Phase Mapping |
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| المؤلفون: | Matsukata, Taeko, de Abajo, F. Javier Garcia, Sannomiya, Takumi |
| سنة النشر: | 2020 |
| المجموعة: | Condensed Matter Physics (Other) |
| مصطلحات موضوعية: | Physics - Optics, Condensed Matter - Mesoscale and Nanoscale Physics |
| الوصف: | Circularly polarized light (CPL) is currently receiving much attention as a key ingredient for next-generation information technologies, such as quantum communication and encryption. CPL photon generation for such applications is commonly realized by coupling achiral optical quantum emitters to chiral nanoantennas. Here, we explore a different strategy consisting in exciting a nanosphere -- the ultimate symmetric structure -- to produce all-directional CPL emission. Specifically, we demonstrate chiral emission from a silicon nanosphere induced by an electron beam based on two different strategies: dissolving the degeneracy of orthogonal dipole modes, and interference of electric and magnetic modes. We prove these concepts by visualizing the phase and polarization using a newly developed polarimetric four-dimensional cathodoluminescence method. Besides their fundamental interest, our results support the use of free-electron-induced light emission from spherically symmetric systems as a versatile platform for the generation of chiral light with on-demand control over the phase and degree of polarization. |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1021/acsnano.0c05624 |
| URL الوصول: | http://arxiv.org/abs/2006.08123 |
| رقم الأكسشن: | edsarx.2006.08123 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1021/acsnano.0c05624 |
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