Quantum Internet promises ultra-secure, new generation communications, but is it possible on a global scale?
Completely, according to a new experiment carried out between satellites in orbit and a station on the ground.
The group of scientists was able to exchange several carefully controlled photons of infrared light shocks managed by the Italian Space Agency between the Russian GLONASS satellites and the Cosmic Geodesic Center.
These signals are not easy to pass through about 20,000 miles (12,427 miles) without any interference or loss of data, but it is hopeful that such a global network can be really functional.
Giuseppe Vallone, a researcher from Italy's University of Padova, says: "Space Quantum Communications (QC) is a promising tool for securing unconditional security for satellite-to-ground and inter-optical communications, using quantum data protocols as quantum key distribution (QQD)."
Quantum Basic Distribution or QQD Method The Vallone word refers to encrypted data using the power of quantum mechanics: Thanks to the subtle nature of the technology, any interference can be detected quickly, and the DDR communications can not be disassociated.
In fact, entering a quantum mechanic message would have made him self-destructive.
So far it has been very good in terms of theory, but it has proved difficult to open these safe channels at long distances.
The key to successful data exchange is the use of passive retro reflectors mounted on satellites to protect the health of long-distance light signals with the addition of the previous record distance of such quantum communications to an additional 15,000 kilometers (9.31 miles). .
When locating places like the GLONASS are placed higher in the orbit, it is even more difficult to communicate securely, providing a seamless quanta network that they potentially cover the Earth.
We just started with such technology – at least scientists are still working for what they can actually do – and it's unclear how one quanta can be used or how it can be used right now. was operated.
An idea is that it is a small choice and may be a special, very safe extension to the normal internet used by the devices.
What we now know is the possibility of quantum communications between space and high orbit satellites by expanding the potential of new technology.
It is important for us to continue to develop and improve satellite networks we trust.
"Satellite-based technologies allow for extensive civil, scientific and military applications such as communication, navigation and time, remote sensing, meteorology, intelligence, search and rescue, space exploration and astronomy," says Vallone.
"The core of these systems is to transfer information and information from displacement places safely, protecting these channels against a malicious opponent, as well as for military and civilian operations."
The research has been published Quantum Science and Technology.