期刊
NANO LETTERS
卷 18, 期 1, 页码 567-572出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.7b04705
关键词
Cathodoluminescence; chirality; super resolution; plasmonics
类别
资金
- National Key Research and Development Program of China [2017YFA0206000]
- National Basic Research Program of China [201SCB932403, 2017YFA0205700]
- National Science Foundation of China [61422501, 11674012, 11374023, 61521004]
- Beijing Natural Science Foundation [L140007]
- Foundation for the Author of National Excellent Doctoral Dissertation of PR China [201420]
- National Program for Support of Top-notch Young Professionals [W02070003]
Circularly polarized light is crucial for the modern physics research. Highly integrated nanophotonic device further requires the control of circularly polarized light at subnanoscale. Here, we report the tuning of chiral cathodoluminescence (CL) on single Au nanostructure under electron stimulation. The detected CL helicity is found ultrasensitive with the electron impinging position on the structure, and a helicity switch is achieved within a 1.86 nm electron-beam movement, which is applied to construct ternary notation sequence. The proposed configuration provides a delicate platform for the CL helicity control, which opens a way for the future chiral applications at subnanoscale like information coding and quantum communication.
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