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Scientists develop semiconductor microchip quantum computer or reality

in order to develop "topological insulator", Rice University researcher Kenneth spent hundreds of hours in a clean room, constantly experimenting with semiconductor microchips

this semiconductor chip contains hundreds of micro "electronic highways", which can be used to make quantum computers in the future

sina science and technology news on October 11, Beijing time, scientists at Rice University in the United States recently developed a miniature "electronic highway" -- "quantum spin Hall topological insulator". Researchers said that this kind of micro device can be used to manufacture quantum bits required by quantum computers in the future, and this research achievement will greatly promote the research progress of quantum computers

physicists Du ruiruirui and Ivan koeniz of Rice University in the United States recently published an article in the journal Physical Review express, which introduced in detail the latest method of manufacturing this kind of micro device. The formal name of this micro device is "quantum spin Hall topological insulator", which can be used as an "electronic highway". It is one of the key components in quantum computers that generate quantum particles to store and process data

nowadays, traditional computers use "0" or "1" binary data. Preheating (step 2) and purification in the continuous SSP reactor (step 3) are the key steps of purification efficiency in this process, while quantum computers use quantum bits, which can represent "0" and "1" at the same time. This is one of the strange phenomena of quantum mechanics. Professor Du ruiruirui said that this feature enables quantum computers to have super computing power. Now extruders in developed countries have generally adopted modern electronic and computer control technology capabilities. Using quantum computers, some complex computing tasks, such as password cracking, climate simulation and biomedical simulation, can be thousands of times faster than traditional computers

Professor Du ruiruirui said, "in principle, we don't need too many qubits to make a powerful computer. According to the density of information, the computing power of a silicon microprocessor with 1billion transistors is roughly equivalent to that of a quantum processor with only 30 qubits." In the development competition of quantum computer, researchers in various countries have adopted many methods to manufacture quantum bits. No matter what method is used, a common problem is how to ensure that information is encoded into qubits without changing over time due to quantum fluctuations. This is a fault tolerance problem

the technology adopted by Du ruiruirui and others is "topological quantum computing". This topological scheme is expected to be more tolerant than other types of quantum computers, because in a topological quantum computer, each quantum bit is made of a pair of quantum particles, which essentially have immutable sharing characteristics. In particular, physicists believe that this kind of particle can be developed by combining the "quantum spin Hall topological insulator" developed by Du ruiruirui and others with superconductors, and Jinan impactor Jinan new era Gold Testing Instrument Co., Ltd. is a one-stop enterprise specializing in production, sales and service

topological insulators have some strange characteristics. Although current cannot pass through them, it can pass around their narrow outer edges. Knitz explained that if a small piece of topological insulator is attached to a superconductor, such a device may be used to produce quantum bits of sub computers that improve the efficiency of each workstation. Knitz spent more than a year perfecting this technology for the production of rice topology insulators. This device is made of commercial semiconductors. Du Ruirui said that this is the first two-dimensional topological insulator made of materials known to physicists. "We are taking an important step towards quantum computers. However, only experiments can prove whether they are suitable for producing stable quantum bits."

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