Quantum Based Information Transfer in Satellite Communication
László Bacsárdi, Sándor Imre · Sciyo eBooks · 2010
In the next years we have to handle the problems originated from the decreasing size of microchips. As everyday life is getting faster it requires researchers and engineers to respond to the growing needs. In telecommunication applications one of the most crucial issue to solve is how to transmit as many bytes at a given frequency in a second as possible. One way to determine the system’s efficiency is to measure the number of bytes sent per second. In this chapter we presented the base of quantum mechanic based communication. We showed that there exist already algorithms to solve problems which are very difficult to be solved by traditional computers. The quantum theory has appeared in satellite communications offering answers for some of nowadays’ technical questions. We introduced two solutions which can be useful in redundancy-free communications. One of the primary requirements of long-distance and free-space quantum communication is the capability of the effective transmission of quantum states in non-ideal, noisy environments. The free-space and satellite quantum channel could be the way to increase significantly the distance limit of current quantum communication systems. The current earthbound freespace quantum channels have the advantage in that they can be combined with satellite quantum communication. In the future, we will be able to overcome the current distance limits in quantum communication by transmitting EPR-states from space to Earth.