The future of the quantum internet could be solved with the use of fleets of drones to send particles of light that provide data. This, after researchers from the University of Nanjing, in China, managed to send photons between two locations a kilometer apart. This internet distribution method would also be cheaper and safer compared to fiber optic network. Published in the journal Physical Review Letters, a study led by Nanjing University Professor Zhenda Xie states, "entangled" quantum particles retain their interconnected properties even when separated by long distances.
Drones and the Quantum Internet
These light particles, or photons, are essential for the functioning of the quantum internet supported only by quantum computers, which can encrypt information by means of secret codes. When considering using fiber optic cabling to manage the quantum internet, the researchers saw, the signal weakened over long distances due to the absorption of photons. Therefore, the use of drones was more practical and effective.
Researchers used two drones to transmit the photons up to a kilometer between a base and the drone. One drone created pairs of ‘entangled’ particles, the scientists' name for photons, and sent them to a station on the surface while relaying the second particle to the second drone.
It transmitted the received particle to a second ground station one kilometer apart from the first station. Under this mechanism, in the future, fleets of drones could work together to send ‘entangled’ particles to recipients in different locations.
Quantum computers are more secure compared to current equipment; any attempt to steal information would change the state of the photons. This would alert the user of the attempt and thus have time to respond to the attack.
For his part, Professor Siddharth Joshi at the University of Bristol, confided, drones could become the final chain in the connection between one part of the world and another. "The achievement marks an important step towards a quantum internet," he added.
One of the main objectives of the researchers developing this project is to create a network of drones capable of distributing quantum internet around the world.
Likewise, the quantum internet would allow quantum computers to work together to discover the limits of quantum physics in experiments around the world. In addition, the use of drones would be the cheapest way to carry out the distribution of this new network.
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