Researchers at Osaka University were able to improve the conversion of photons to electrons using a metallic nanostructure. This is an important step in the development of advanced technologies for data exchange and processing.

Storing and transmitting information in the form of ones and zeros – as in classical computers – is outdated and not suitable for quantum technologies. Researchers in Japan have created a nanoantenna that will help bring the practical use of quantum information networks closer.

Quantum information is more difficult to process and read than ordinary information. Semiconductor nanoboxes, or quantum dots, are materials in which the authors have proposed storing and transmitting quantum information. But quantum relay technologies have some limitations, for example, they are ineffective.

The authors point out that the conversion efficiency is too low today. Therefore, they said, they developed a nanoantenna consisting of ultra-small gold rings. This shape will focus the light on a single quantum dot, which reads the voltage from the device.

The researchers increased the absorption of photons by nine times. Theoretical modeling shows that this indicator can be improved 25 times.

As a result of the work, the researchers emphasized that such abstract physical properties as entanglement and superposition can provide unprecedented information security and data processing. This will become available in the next 10 years.