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Two dimensional transition metal chalcogenides have multi valley structures in their energy bands, giving them electron valley degrees of freedom, making them an ideal platform for studying multi body interactions. As the main mechanism of valley depolarization, the valley scattering process of free electrons or bound excitons is crucial for exploring excited state electron phonon interactions and...
In recent years, the performance of Chinese laser technology enterprises in the international market has become increasingly eye-catching. On September 20th, under the joint witness of nearly a hundred customer representatives from various industries in South Korea, the opening ceremony of Zhuolai Laser South Korea Branch was officially held.The branch is located in the Gyeonggi do region of south...
Recently, Associate Researcher Zhang Junyong from the High Power Laser Physics Joint Laboratory of the Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, together with Professor Zhao Yongpeng's research group from Harbin Institute of Technology and Professor Zhan Qiwen's research group from Shanghai University of Technology, completed the experimental verification of 46....
Beijing, April 1st (Reporter Liu Xia) - The world's most powerful laser has been activated recently. On March 31st, the Physicist Organization Network reported that the system can enable laser pulses to reach a peak of 10 terawatts (1 terawatt=100 terawatts=1015 watts) within 1 femtosecond (1000 trillions of a second), which is expected to promote revolutionary progress in multiple fi...
The current deep neural network system (such as ChatGPT) can quickly improve energy efficiency by 100 times in training, and "future improvements will greatly increase by several orders of magnitude. Scientists from MIT and other institutions have demonstrated a new optical neural network training method that can crush state-of-the-art electronic microprocessors.Moreover, the computational density...