Discussion and Analysis on the Development of Silicon Material of Baibian LED Lamps (Part 2)

Scientists at the University of Innsbruck in Austria obtained pairs of photons for the first time by irradiating quantum dots with lasers with the help of micro semiconductor structures. This achievement can further promote the application of quantum research, and can be used for the development of quantum computers.

Quantum dots are quasi zero dimensional nanomaterials, which are composed of a small number of atoms. It is difficult to "fix" a single atom, while quantum dots are easier to "integrate into semiconductor chips". The researchers used quantum dots from indium arsenide in their experiments. Each quantum dot consists of about 10000 atoms. Due to its special structure, their activities are very similar to those of a single atom.

The researchers first used liquid helium to cool the quantum dot embedded in a micro semiconductor structure, then used laser irradiation to improve the electronic energy state, and finally the energy was released in the form of photons. Weiss, an expert at the Institute of Experimental Physics at Innsbruck University, said that at present, scientists have been able to intentionally obtain pairs of photons from a quantum dot. At present, researchers also try to integrate quantum dots and lasers on a chip, which can easily generate photons. Paired photons have good application prospects in quantum research.