Speaker
Professor Xiaoshuang Chen
Time:
2020.10.14 16:00-17:30
Abstract
In twentieth century, electronic manipulation of the transistor promoted the information technology development to bring great changes in human life. Light manipulation is considered to be another great revolutionary technology direction of 21st century. Micro-nano processing technology bring the traditional optical to micro-nano optics. The use of metamaterials, metasurfaces, meta-lenses, photonic crystals, surface plasmon microstructures and other micro-nano optical structures to control the transmission of optical signals and their interaction with semiconductor optoelectronic materials is attracting extensive international attention.
This report will mainly introduce the requirement of micro-miniaturization and spectral refinement of space spectroscopy instruments. A new mode of spectrum and space simultaneous spectroscopy is proposed and realized by integrating with high quality factor combination microcavity, which can be fully matched with the detector and monolithic integration, to achieve the ability to recognize the target spectrum in the simultaneous mode. Based on the light control ability of surface plasmons, to achieve the control of light coupling with the quantum structure, the absolute enhancement of the infrared response of the traditional quantum structure device can reach two orders of magnitude. The semiconductor avalanche single-photon detector with microcavity control of the optical field, an optical microcavity structure of metal artificial structure-dielectric layer-metal artificial structure is established to hold the optical response of the device, reduce the effective pixel size of the device to the micron level. The device effectively overcomes the effect of material defects on the device performance. At the same time, based on the light-induced electric field gate effect, the single-photon response of a single nanowire without avalanche amplification is realized. Finally, the application of related work in infrared and quantum information space technology is discussed.
Bio
Chen Xiaoshuang, Male, Ph.D., Professor, Director of the State Key Laboratory of Infrared Physics, Chief Scientist of the Quantum Control and Quantum Information Special Project of the National Key Research and Development Program, won the "National Science Fund for Distinguished Young Scholars", the "Hundred Talents Program" of the Chinese Academy of Sciences, "Shanghai Youth Science and Technology Venus", Shanghai Leading Talent, "National-level Candidate for the New Century Talent Project". He won 1 second prize of the National Natural Science Award, 1 second prize of the National Science and Technology Invention Award, 1 Shanghai Natural Science Peony Award, 1 Shanghai Natural Science First Prize, and 4 other provincial and ministerial science and technology progress awards. He has been awarded the outstanding doctoral supervisor of the Chinese Academy of Sciences and the outstanding graduate supervisor of the Chinese Academy of Sciences many times.
He has undertaken successively the "973" project of the national key basic research development plan, the major special project of quantum control, the national defense "973" project, the key project of the National Natural Science Foundation of China, the major and key projects of the National Natural Science Foundation of China, the innovative engineering project of the Chinese Academy of Sciences , There are more than 10 national, provincial and ministerial scientific research projects such as major and key projects of the Shanghai Municipal Science and Technology Commission.
In recent years, he has been mainly engaged in the research of semiconductor infrared optoelectronic materials and devices, photonics of photonic band gap microstructures and electronic properties of nanomaterials. The work has been carried out around the international frontier field and national significant requirment, and has solved the important problems in semiconductor optoelectronic materials and devices. More than 160 papers have been published in international SCI journals such as Nat. Mater., Nat. Commun., Sci. Adv., Phys. Rev. Lett., JACS, Nano Lett., Adv. Matt. and PNAS. The papers have been cited more than 5000 times by others in SCI journals. Authorized and applied for 10 invention patents.
Research fields: infrared optics, micro-nano photonics, artificial quantum structure and quantum manipulation, optoelectronic materials and devices.