Publications by authors named "Yong-Jing Cai"
Article Synopsis
- Photonic quantum technologies have advantageous properties like high-speed transmission and low noise, but their application is limited by the diffraction limit of photons.
- Researchers have successfully maintained quantum polarization entanglement using a nanoscale hybrid plasmonic waveguide made of a fiber taper and silver nanowire, achieving a fidelity of 0.932.
- The experiment validated the violation of the CHSH inequality (2.495 ± 0.147), suggesting potential advancements in nanophotonics and quantum optics for applications like highly sensitive quantum imaging and detection.
In this paper, surface plasmon polariton (SPP) modes on silver nanowire (AgNW), with different field symmetric, are studied by different near field methods, respectively. In the experiment, the excitation and detection of SPPs are performed by two probes of near field scanning optical microscope (NSOM) simultaneously, which realizes the study of SPPs in complete near field. By controlling the experimental conditions, two of the fundamental SPP modes are detected separately and their intensity distributions on AgNW are given by the NSOM images.
View Article and Find Full Text PDFWe demonstrate a novel detection scheme for the orbital angular momentum (OAM) of light using circular plasmonic lens. Owing to a division-of-amplitude interference phenomenon between the surface plasmon waves and directly transmitted light, specific intensity distributions are formed near the plasmonic lens surface under different OAM excitations. Due to different phase behaviors of the evanescent surface plasmon wave and the direct transmission, interference patterns rotate as the observation plane moves away from the lens surface.
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