The unique properties of quantum dots allow them to be a radiation source for information transfer in quantum optical computers. Alexey Fedorov, head of the scientific group of the Russian Quantum Center and MISIS University, told socialbites.ca.
Mungi Bavendi, Louis Bruce and Alexey Ekimov, who worked in the United States for the discovery and synthesis of quantum dots, won the 2023 Nobel Prize in Chemistry. Representatives of the Nobel Committee announced this at a ceremony in Stockholm.
Fedorov explained that starting from a certain size of an object, it becomes increasingly affected by the effects of quantum physics; This is what happens in the case of quantum dots – nanometer “pieces” of a semiconductor, Fedorov explained. The most important effect for us is the size dependence of features.
“Why do the properties of a quantum dot depend on its size? Consider an electron in a rectangular well. There are energy levels in which electrons can reside. The properties of this well and, accordingly, the energy levels in which the electrons are located depend on the shape of the quantum dot. When an electron moves from one level to another, it emits light energy in the form of photons. In other words, we can program which energy (which light color) will be emitted during the electronic transition. In addition, it is important for us that the energy is the same in the case of all electrons, that is, we receive many identical or, as we say, indistinguishable photons. This is necessary for optical quantum computers, where photons are used as information carriers,” said the physicist.
previously chemist said On the use of quantum dots in biomedicine.
Source: Gazeta
Barbara Dickson is a seasoned writer for “Social Bites”. She keeps readers informed on the latest news and trends, providing in-depth coverage and analysis on a variety of topics.