University of Vienna researcher Anton Zeilinger and his team devised an artificial intelligence algorithm called Melvin, hoping to use artificial intelligence techniques to advance quantum mechanics. Their research has been published in the Physical Review Letters.

Quantum mechanics is one of the most confusing areas of science, and even the best physicists agree that quantum mechanics is complicated. As Michael Merrifeld of the University of Nottingham, UK, puts it: "If quantum mechanics did not confuse you, then this is because you have not really understood it."

Therefore, the design of quantum mechanics experiment is very difficult. However, if we want to develop quantum computers or quantum cryptography, then such experiments are crucial. Zlininger's team believes that if human thinking is hard to solve the problem of quantum mechanics, then the "brain" without human intervention may be easier to design such experiments.

The concept was proposed by doctoral student Mario Krenn. He has tried to design an experiment that uses lasers and mirrors to achieve specific quantum states. In the process, he found himself just making the guess, and the computer algorithm could make such a guess, and faster.

"So I defined the goal, developed the algorithm and let the algorithm run overnight, and the algorithm generated the resulting file the next morning, and it was an exciting day."

In operation, the Melvin algorithm combines the different modules of the quantum mechanics experiment (ie, the lasers and mirrors described above) and examines the resulting quantum states. This algorithm can run multiple configurations at random. Melvin will simplify it if it is configured randomly to produce the desired result. This algorithm can also sum up experience, remember what kind of configuration to bring what kind of results, and then use these configurations when needed.

The team at Zelinger said that so far, the algorithm has designed some experiments that humans can not think of, and the workings of some experimental configurations are hard to understand. This is very different from artificially designed experiments. Cologne said: "I still have a hard time intuitively understanding what happened."

The team used Melvin to try the Greenberger-Horne-Zeilinger (GHZ) quantum state. In this quantum state, more than two photons appear entangled. Melvin devised 51 experiments that could entangle entangled states, one of which achieved the GHZ state.

For quantum mechanics, artificial intelligence can not completely replace human beings at present. Melvin's results still require manual analysis. But it also raises the question of what happens if Melvin's results are too weird to understand.

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