Abstract The Chinese Academy of Sciences has just received a report from the Chinese Academy of Sciences. The Institute of Chemistry has just announced the important progress in the research of artificially simulated photosynthetic water cracking catalytic center. The Pan Jianwei team of the University of Science and Technology of China, which belongs to the Chinese Academy of Sciences, has discovered a new single photon based on a single atomic layer. Source, will be the target...
The Chinese Academy of Sciences has just received a report from the Chinese Academy of Sciences, and the Institute of Chemistry has just announced the significant progress in the research of artificially simulated photosynthetic water cracking catalytic center. The Pan Jianwei team of the University of Science and Technology of China, which belongs to the Chinese Academy of Sciences, has discovered a new single photon source based on a single atomic layer. It brings the current graphene-like materials of red and hot to the new world of photonic quantum devices. The University of Science and Technology of China, Pan Jianwei and Lu Chaoyang, collaborated with Xu Xiaodong of the University of Washington and Yao Wang of the University of Hong Kong to discover non-classical single-photon emission in the graphene-only monoatomic semiconductor material for the first time in the world, connecting quantum optics and two-dimensional materials. Two important areas have opened the way to new light quantum devices. The work was published online on May 5th in Nature·Nanotechnology. In the same period, the “News Perspective†column commented that the work “opened up a new field of researchâ€.
China University of Science and Technology found a new single photon source based on a single atomic layer
Since the successful preparation of graphene (ie, monoatomic carbon) by scientists in 2004, the physical connotation and superior properties of this material have triggered an external upsurge in basic and applied research. The world's first mass-produced graphene mobile phone developed by China this year not only has high-definition picture, but also has a longer battery life. In recent years, military powers have used graphene instead of Kevlar, aramid and other materials to set up new armor protection equipment; Chinese scientists have made progress in the study of graphene electronic skin. Not long ago, Chinese scientists broke through the difficult problem of industrial production of graphene, and it took only one hour to prepare single-layer graphene. However, due to the lack of energy gap in the electronic structure of graphene, its application in optoelectronic devices is limited.
However, the novel graphene-like material "monoatomic transition metal sulfides" (such as MoS2, WSe2, etc.) with direct band gaps have attracted attention for their unique optoelectronic properties. It is only before that all the research on the two-dimensional materials of monoatomic layers in the world has focused on the field of classical optics. Quantum optical phenomena such as photon anti-bunching have not been observed experimentally.
University of Science and Technology of China Pan Jianwei and Lu Chaoyang collaborated with Xu Xiaodong of the University of Washington and Yao Wang of the University of Hong Kong. It was found that atomic defects in the two-dimensional single atomic layer of tungsten selenide (WSe2) can bind excitons and become nonclassical single photon emission. "Single-atom-based single-photon devices are not only conducive to photon reading and control, but also easily fabricated and implemented in conjunction with other optoelectronic device platforms," ​​compared to other single-photon systems.
The youngest academician, at the age of 27, was selected as one of the "Top Ten Scientific and Technological Progress of the Year". At the age of 31, he resolutely returned to China to set up his own laboratory to help China lead the world in the frontier science and technology of quantum communication... In recent years, in Hefei Working for Pan Jianwei is one of the most dazzling technology stars in China and is considered to be one of the closest Chinese to Nobel.
Lu Chaoyang, Ph.D., University of Cambridge, UK, Professor, University of Science and Technology of China. For the first time in the world, the realization of six-photon entanglement, eight-photon entanglement and ten-bit super-entanglement has refreshed two world records in the field of multiphoton entanglement and optical quantum computing, and was selected twice in the annual progress of China's science and technology. news.
This research means that efficient optical quantum information processing lines can be realized. The theory also shows that scientists can achieve quantum control of the single-electron spin-valley coupling degree of freedom by controlling the electric field, "the future will be applied to the study of fault-tolerant quantum computing."
In fact, the prospective field of quantum regulation based on single-atom layers has become the focus of international competition. The research results of Pan Jianwei's team were published online in Nature and Nanotechnology on the 5th. Three independent research teams in Europe and the United States, such as the National Laboratory of Strong Magnetic Fields, also had similar research results, but later than the Chinese team contributed.
It is worth mentioning that Pan Jianwei's team has achieved a number of achievements in the systematic research of scalable optical quantum information processing technology, including the realization of the first atomic layer semiconductor quantum device and the quantum artificial intelligence algorithm experiment in the world, in the field of optical quantum information. Maintaining an international leading position.
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