The year 2020 is destined to be an extraordinary year, with the sudden outbreak of New Crown Pneumonia having a serious impact on both our economy and society. Nonetheless, our scientists continued to use the laboratory as a battlefield, competing for time and fighting hard to make one new breakthrough and discovery after another.

The 2020 China's Top 10 Social Impact Events in Optics (Light10) was launched in order to pursue those high “l(fā)ight” moments in China's optics field, those moments that move us, make us proud, and make us remember them forever.

Since its launch in 2019, Light10 has won wide recognition and strong support from all walks of life, and has triggered a warm response from the academic and journal publishing communities. Li Jun, former director of the Media Regulatory Bureau of the Central Propaganda Department and vice president of the China Periodical Association, said of the Light10 selection, "Thanks to the Light team, we have accomplished an experimental sample of journals - a sample of the science-society connection about light. So that we no longer talk and pull ourselves up by our own bootstraps. Let the public recognize science, learn science, master science, respect science, and revere science. So that science is not mysterious, not divorced, not far away, and is profoundly affecting us, changing and even creating our way of life. Bridging the gap between science and the general public, scientific inventions and social civilization, science and technology and human progress, human society and our lives, science has never been absent, but easily overlooked."

After three rounds of selection, and finally according to the voting results of the third round of final selection, it is now released by Light: Science ＆ Applications and Science.com: “2020 China's Top 10 Socially Influential Events in Optics (Light10)” finalist list.

2020 China's Top 10 Social Influence Events in Optics (Light10)

1

China's independent research and development success of commercial millimeter-wave phased array chip

How to let consumers enjoy the low price, fast communication solutions?In January, the network communication and security of the Purple Mountain Laboratory announced: China's independently controlled, ultra-low-cost millimeter-wave phased-array chip came out, it is fast, wide coverage, a kick away from the millimeter-wave communication technology commercial “stumbling block”.

2

Peking University: unidirectional radiation-conducting mode resonance states realized under topological protection

Chao Peng's group, an associate professor at the Department of Electronics, School of Information Science and Technology, and State Key Laboratory of Regional Optical Fiber Communication Networks and Novel Optical Communication Systems of Peking University, together with his collaborators, have proposed a new method to achieve directional radiation on a single silicon substrate without relying on mirrors from the viewpoint of topological photonics. This technique is expected to significantly reduce the insertion loss of on-chip optical ports and significantly advance the development of high-density optical interconnects and photonic chip technology.

3

Chinese Scientists Tackle Earth-Moon Laser Ranging Technology

Luo Jun, academician of the Chinese Academy of Sciences, said in an interview with China Science Daily that the laser ranging station of Sun Yat-sen University's “Tianqin Project” has successfully measured the echo signals of five mirrors on the lunar surface, and measured the most accurate Earth-Moon distance in China, with the precision reaching the international advanced level. This means that Chinese scientists have conquered the Earth-Moon laser ranging technology, so China has become the world's third country to successfully measure all five mirrors.

4

Preparation of high-dimensional quantum entangled light source opens up another pathway

A research team from the State Key Laboratory of Solid State Microstructure Physics at Nanjing University and collaborators have made a major breakthrough in the study of high-dimensional quantum entangled light sources. The researchers used superstructured lens arrays combined with nonlinear crystals to successfully prepare a high-dimensional path entanglement and multiphoton light source, which breaks through the technological bottleneck of the existing quantum light source and the limitation of information coding dimensions, and is of great significance for the development of quantum information technology with higher information capacity and higher security.

5

New Study Reveals Black Phosphor Immunotherapy Enhances Anti-tumor Efficacy

Zhang Han's team, a professor at the Key Laboratory of 2D Materials of the Ministry of Education of Shenzhen University, and his collaborators have proposed a photoimmunotherapy based on black phosphorus materials, which enhances anti-tumor immune responses in combination with CD47 antibodies. Given its excellent biodegradability and photoimmune properties, black phosphorus will show great potential in biomedical applications and clinical translation, Zhang said.

6

Chinese Scientists Increase Microwave Measurement Sensitivity by 1,000 Times

Prof. Jia Laitang and Prof. Xiao Liantuan from Institute of Laser Spectroscopy, Shanxi University, led a team to realize the prototype of Riedelberg atomic microwave super-aberrant receiver for the first time in the world, which greatly improved the detection sensitivity of microwave electric field strength, the microwave measurement sensitivity is better than the previous international best level of 1,000 times, and the minimum detectable microwave field strength is better than the previous international best level of 10,000 times. The research results have greatly promoted the development of microwave electric field precision measurement, which has important application value in the fields of national defense security, microwave communication, quantum metrology, electronic information and so on.

7

Dirac vortex topological optical cavity proposed by Institute of Physics, Chinese Academy of Sciences and others

The team of L01 group of Key Laboratory of Optical Physics, Institute of Physics/Beijing National Research Center for Condensed Matter Physics, Chinese Academy of Sciences (ICP/BNRC), together with their collaborators, have theoretically proposed and experimentally demonstrated that Dirac vortex cavities, a new kind of topological photonic crystal microcavity, not only can support cavity modes of arbitrary simplicity but also have the best large-area single-mode performance among the currently known optical cavities. This topological cavity not only supports cavity modes of arbitrary simplicity, but also has the best large-area single-mode performance among the currently known optical cavities. This topological cavity fills the gap in the design of mode-selective cavities for semiconductor lasers, and provides a new development direction for the next generation of high-brightness single-mode surface-emitting devices in line with the historical law of commercial lasers, which is potentially beneficial to the technologies of LIDAR and laser processing.

8

China develops 2.4 billion years without a second difference in the vehicle optical frequency marker

The Institute of Precision Measurement Science and Technological Innovation of the Chinese Academy of Sciences has successfully developed an on-board optical frequency marker that does not differ by a second in 2.4 billion years. According to the team experts, the optical frequency marker is a set of ultra-high-precision instrumentation used to realize ultra-high-precision time measurement. Ultra-high precision measurement of time is an important technical support for scientific and technological innovation and national economic construction, and is also a key scientific and technological field with fierce international competition. As an ultra-high precision instrument, the first thing to realize the application of optical frequency marker is to make it “transportable”, so the research and development of vehicle-mounted optical frequency marker is of great practical significance.

9

Fastest! China's quantum computer achieves global leadership in arithmetic power

On December 4, the University of Science and Technology of China (USTC) announced that Pan Jianwei and others at the university had successfully constructed a 76-photon quantum computing prototype, “Nine Chapters”, which solves the mathematical algorithm Gaussian Bose sampling in just 200 seconds, while the world's fastest supercomputer has to take 600 million years. This breakthrough has made China the second country in the world to realize “quantum superiority”.

10

No. 1217: Chang'e 5 is coming home, I'll record and broadcast it live.

In the early hours of December 17, the Chang'e 5 return vehicle, carrying lunar samples, landed safely in a predetermined area in Siziwangqi, Inner Mongolia. When it returned, everything it did was within my grasp. I am photoelectric tracking and measuring equipment, number “1217”, left my mother - Changchun Institute of Optical Precision Machinery and Physics of the Chinese Academy of Sciences R & D center team, has been in the Siziwangqi landing site for five years, the main task is to look up at the sky, observe the spacecraft, their launch and return to the moon. The main task is to look up at the starry sky, observe the spacecraft, and record every action during their launch and return for scientists to control the performance of the spacecraft and do a good job of scheduling the whole process. The Chang'e-5 return vehicle has returned, and I have successfully completed my observation of it.

Article source: https://optics.ofweek.com/2021-01/ART-8420-2500-30482755.html

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