China's Technological Rise: From Quantum to Battery Swapping, the Dragon Takes Flight
China's Technological Rise: From Quantum to Battery Swapping, the Dragon Takes FlightThe world's attention is focused on the East. Once the "world's factory," China is transforming itself, driven by technological innovation, and marching towards its goal of becoming a technological powerhouse...
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Quantum batteries improve charging efficiency
Science and Technology Daily, Beijing, November 6th (Reporter Liu Xia) - Scientists from the University of Tokyo in Japan have published a paper in the latest issue of the Physical Review Letters magazine, stating that quantum batteries are energy storage devices that can utilize quantum effects and bypass traditional causal rules to improve charging efficiency.Researchers explain that in the classical world, causality has only one direction: if event A leads to event B, then it is clear that event B does not lead to event A...
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The coherence time of new quantum bits has been extended thousands of times before
Science and Technology Daily, Beijing, October 29 (Reporter Liu Xia) In a new study, the Argonne National Laboratory team of the US Department of Energy has extended the coherence time of a new type of quantum bit - charge quantum bit - to 0.1 milliseconds, which is 1000 times the previous record...
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The significance of China's first quantum chip assembly line being put into operation is significant, as we choose a new track and take our own path
Recently, it has been reported that the significance of China's first quantum chip assembly line being put into operation in X region (due to confidentiality reasons) is significant, mainly manifested in the following aspects:1. Technological autonomy: Independent innovation is our guiding ideology...
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Progress in the Study of the Selective Population of Strongly Microcoiled Quantum state
Science and Technology Daily, Lanzhou, June 13 (Reporter Jie Manbin) The reporter learned from the Institute of Modern Physics of the Chinese Academy of Sciences (hereinafter referred to as the Institute of Modern Physics) on June 13 that the researchers of the Center for Atomic Physics of the Institute have made progress in the research of the selection mechanism of low-energy Highly charged ion charge exchange Quantum state. The relevant results were published in the journal Physical Review Research of the American Physical Society...
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Why is quantum mechanics scary? What have scientists discovered?
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China's 176-bit quantum computing cloud platform is open to the world
According to Xinhua News Agency, Hefei, May 31 (reporter Xu Haitao, Chen Nuo), the reporter learned from the quantum information and Quantum Technology Innovation of the Chinese Academy of Sciences that on the evening of May 31, the 176 bit "Zuchongzhi" quantum computing cloud platform was officially launched and open to global users. This has set a new record for the number of bits of superconducting quantum computer on China's cloud platform, and will further promote the development of quantum computing software and hardware and ecological construction...
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Prospects for the Integration and Development of Quantum and Supercomputing
Our reporter in Germany, Li ShanThe Leibniz Computing Center (LRZ) of the Bavarian Academy of Sciences, located near Munich, is one of the most famous supercomputing centers in Germany. As an important component of the German Gaussian Supercomputing Center, LRZ collaborated with Lenovo and Intel to develop the supercomputer SuperMUC-NG, which ranked 9th on the 2019 Global High Performance Computing TOP500 list...
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Metal Magic: Creating Dream Materials with Semiconductor Quantum Dots
Science and Technology Daily, Beijing, May 30 (Reporter Zhang Jiaxin) According to the latest issue of Nature Communication, a team including researchers from Japan's RIKEN Emerging Materials Science Center has successfully created a "superlattice" composed of lead sulfide semiconductor colloidal quantum dots, in which researchers have realized the conductivity of similar metals, which is 1 million times higher than the current quantum dot displays, And it will not affect the quantum confinement effect. This progress may completely change quantum dot technology, enabling new applications in electroluminescent devices, lasers, thermoelectric devices, and sensors...
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Scientists in China Achieve Quantum Key Distribution in Thousand Kilometers of Relay Free Fiber Optics
Hefei, May 29 (Reporter Xu Jing) -- Pan Jianwei and Zhang Qiang of the University of Science and Technology of China, together with Wang Xiangbin of Tsinghua University, Liu Yang of Jinan Institute of Quantum Technology, You Lixing and Zhang Weijun of the Shanghai Institute of Microsystems and Information Technology of the Chinese Academy of Sciences, have cooperated to achieve 1002km point-to-point long-distance quantum key distribution in optical fibers by developing technologies such as low crosstalk phase reference signal control and extremely low noise single photon detectors, Not only has it set a world record for fiber optic relay free quantum key distribution distance, but it also provides a solution for high-speed backbone links in intercity quantum communication. The relevant research results were recently published in the international academic journal "Physical Review Letters"...
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Quantum information released the "Kuafu" quantum computing cloud platform
Beijing Business Daily News (Reporter Yang Yuehan) On May 25th, the 2023 Zhongguancun Forum opened. At the opening ceremony, the quantum information officially released the Quafu (Kuafu) quantum computing cloud platform...
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Phonon Coupling - Electrons in CdSe, CdS Cores, and Shell Quantum Dots
Xu Chenyuan's StudyEditor | Xu Chenyuan's StudyWe found that peak CdS frequency affects excitationStrong dependence on energyBetween the experimental frequency of the CdSe+CdS combination band and the sum of the corresponding fundamental frequencyThere is still a huge differenceThis indicates that the main transition at high excitation energy is limited to the CdSe core or CdS shell, and therefore cannot enhance the binding band transition between the core and shellThe Raman intensity ratio of CdS to CdSe further supports this viewpoint. The Phonon of CdSeLO in the Lowest Exciton TransitionElectron phonon coupling is slightly weaker in core/shell structures than in pure CdSe quantum dotsThis is contrary to the expectation of the Frehlich coupling mechanism...
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