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A New Way to Write & Read Quantum Messages Could be Helpful in Satellite-Based Communication

By IQT News posted 23 Sep 2019

(ScienceDaily) Quantum information relies on the possibility of writing messages in a quantum particle and reading them out in a reliable way. If, however, the particle is relativistic, meaning that it moves with velocities close to the speed of light, it is impossible for standard techniques to unambiguously decode the message and the communication fails. Thanks to the introduction of a new method to write and read the message researchers at the University of Vienna and the Austrian Academy of Sciences guarantee the reliable decoding of quantum messages which are transmitted extremely fast. The result opens up new possibilities of technological applications in quantum information and quantum communication.
The novel method delivers a new definition of the spin of quantum particles that move very fast. “These results are indicative that this translation procedure could open up to new applications in relativistic quantum information,” says Flaminia Giacomini, the lead author of the paper. For instance, this technique could be helpful in satellite-based quantum communication, where a particle carrying a message has to travel quickly between two far-away points.

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