A team of scientists from the University of Okinawa University of Science and Technology (OIST) in Japan, the University of Kaiserslautern in Germany, and the University of Stuttgart collaborated to design and manufacture an engine using the principles of quantum mechanics. This is an engine developed based on special rules that particles follow at a very small scale, and it does not rely on traditional fuel combustion methods. The relevant paper was published in the journal Nature on the 27th. All particles in nature can be classified into bosons or fermions based on their special quantum properties. At very low temperatures, quantum effects become important, with bosons having lower energy states than fermions, and this energy difference can be used to power engines. Quantum engines do not periodically heat and cool gases like traditional engines, but work by converting bosons into fermions and then back again. Professor Thomas Busch, the head of the quantum systems department at OIST, explained that to turn fermions into bosons, two fermions can be taken out and combined into one molecule. This new molecule is a boson, which can be broken to obtain a fermion again. Through such periodic operations, they can provide power to the engine without using heat. Although this type of engine only works in quantum state, the research team found that its efficiency is quite high, reaching 25% in experimental devices. This new engine is an exciting development in the field of quantum mechanics and has the potential to make further progress in the emerging field of quantum technology. However, researchers indicate that despite the high efficiency of these systems, current research has only conducted conceptual validation, and there are still many challenges in manufacturing practical quantum engines. For example, if the temperature is too high, heat may disrupt quantum effects, so researchers must keep the system as low as possible. This requires conducting experiments with a large amount of energy at low temperatures to protect sensitive quantum states. (New News Agency)