Technology can be used for smartphones.
In traditional quantum chips information carriers are electrons. But faster in terms of signal transmission can be photons, which can move at the speed of light, reports the Chronicle.info with reference to the Telegraph.
However, the implementation of the transfer of information using light quanta is difficult for precision control of signal transmission and the number of photons emitted per unit time.
Scientists from Munich’s technical University, together with colleagues from other countries tried to solve this problem. They have created light sources with a thickness of a few atoms and be able to place them on a surface with an accuracy of a few nanometers. Critical here was precisely controlled placement of light sources. You can create quantum light sources in three-dimensional materials such as diamond or silicon, but they can’t be accurately placed in these structures.
As source material, physicists have used a semiconductor layer molybdenum disulfide (MoS2) with a thickness of only three atoms. They irradiated him with a beam of helium ions which is focused on surface area of less than one nanometer. This allowed a point to knock out of the material one to two sulfur atom or molybdenum and to create thus a defect. Such a defect is a trap for the excitons — quasi-particles, combining an electron and a hole, which can emit photons when an electric current is applied.
A team of scientists has developed a model that theoretically describes the energy state observed in these defects. In the future, the researchers want to create a more complex picture of the light source — for example, in the lateral two-dimensional lattice structures, — so as to explore multiexciton phenomena and exotic properties of materials.
According to scientists, they created the light sources may be used not only in theoretical studies, but use in quantum computing. Because the light sources always have the same basic defect in the material, they theoretically indistinguishable. This allows you to make quantum entangled. As stated by the authors, due to the high sensitivity of such light sources, they can become the basis of quantum sensors for smartphones and extremely safe encryption technologies to transfer your data.
This is a syndicated post. Read the original post at Source link .