Reconfigurable metasurfaces to realize BB84 protocol for wireless quantum communication.

Metasurfaces showcase unique abilities to arbitrarily manipulate the amplitude, phase, and polarization of electromagnetic (EM) waves, facilitating their application in wireless communication. In the propagation of EM waves, traditional methods cause severe security concerns in channel/deciphering under eavesdropping. Fortunately, quantum communication, based on quantum key distribution (QKD) of the BB84 protocol, endows the transmission with high security.

Experiment investigation on pulsed gamma-ray fluence rate effect on Yb-doped yttrium aluminum garnet scintillator.

As an ultrafast inorganic scintillator, Yb-doped YAlO [yttrium aluminum garnet (YAG)] crystals have potential applications in various fields, such as ultrafast radiation detection, solar neutrino detection, pulsed radiation imaging, and nuclear reaction kinetics diagnosis. In this work, the fluence rate effect of pulsed γ rays on the Yb:YAG scintillation crystal was investigated at the "QiangGuang-I" facility. The experiment results show that the fluence rate linear response upper limit of the Yb:YAG crystal is about 9.

Experimental study on the fluorescence spectrum in the near-ultraviolet and visible regions of a carbon dioxide gas Cerenkov medium.

We investigated the faint fluorescence spectrum of carbon dioxide in the near-ultraviolet and visible regions using an intense relativistic electron beam accelerator with an energy of 0.2-0.3 MeV.

Development of a fast radiation detector based on barium fluoride scintillation crystal.

Barium fluoride (BaF2) is an inorganic scintillation material used for the detection of X∕gamma radiation due to its relatively high density, equivalent atomic number, radiation hardness, and high luminescence. BaF2 has a potential capacity to be used in gamma ray timing experiments due to the prompt decay emission components. It is known that the light output from BaF2 has three decay components: two prompt of those at approximately 195 nm and 220 nm with a decay constant around 600-800 ps and a more intense, slow component at approximately 310 nm with a decay constant around 630 ns which hinders fast timing experiments.