How exactly can quantum physics be applied in communications? First, let's talk about information processing.
In normal silicon computer chips, real-world information is converted into digital data, rendered in either one of two states: 0 or 1. However, in quantum computers, digital data can exist in both states simultaneously, regardless of distance. That enables holding more digital data as possible. Scientists liken it to two pieces of paper that are distant from each other. If we write on one, the other immediately shows our message. This premise is the foundation of "quantum communication."
In this way, the transfer of data happens at a speed even faster than light. In theory, once such communication is established, it will be an unbreakable and encrypted wireless network. China's quantum satellite will beam individual entangled quantum particles between space and ground stations. According to the project team, such communication would be available in about ten years -- and can be applied in various fields, including online banking and military affairs.