Zhen Wang

TL;DR: Three novel solution-processable small molecules, which contain π-bridges with gradient-decreased electron density and end acceptors substituted with various fluorine atoms, exhibit excellent inverted device performance and an average power conversion efficiency of 11.08% are reported.

TL;DR: In this article, a degenerate telecommunication wavelength entangled-photon source from an ultrafast pulsed laser pumped spontaneous parametric down-conversion (SPDC) was designed and realized, which shows simultaneously 97% heralding efficiency and 96% indistinguishability between independent single photons without narrowband filtering.

TL;DR: In this paper, the authors demonstrate a secure key distribution that breaks the absolute key-rate limit of repeaterless QKD over a 509km-long ultralow loss optical fiber.

TL;DR: This work adopts the technology developed in the frequency and time transfer to lock two independent laser wavelengths and utilizes additional phase reference light to estimate and compensate the fiber fluctuation and calculates the secure key rates with the finite size effect.

TL;DR: In this article, a synthetic route was devised to enable in situ reaction between metallic Sn and I2 in dimethyl sulfoxide (DMSO), a reaction that generated a highly coordinated SnI2·(DMSo)x adduct that is well-dispersed in the precursor solution.