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Light(Science & Applications) 2021年第8期10卷 1395-1397页

作者： yun-feng xiao Frank Vollmer State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics School of PhysicsPeking UniversityBeijingChina Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuanChina Department of Physics and Astronomy Living Systems InstituteUniversity of ExeterExeterUK

Optical microcavities confine light to small volumes by resonant *** of their ultrahigh quality factors(Q)and small mode volumes(Vm),optical microcavities have attracted strong research interests for their unique property of significantly enhancing light-matter interaction.1 In recent decades,optical microcavities have become cornerstones for a wide range of studies and applications。

关键词： interaction. corners resonant

Optical microcavity： from fundamental physics to functional photonics devices

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Science Bulletin 2016年第3期61卷 185-186页

作者： yun-feng xiao Qihuang Gong State Key Laboratory for Mesoscopic Physics and School ofPhysics Peking University Beijing 100871 China Collaborative Innovation Center of Quantum Matter Beijing 100871 China

Optical microcavities have attracted strong research interests,for their unique property of confining photons for a long time in small volumes,which significantly enhances light–matter interaction[1].In recent decades,various fabrication techniques of microcavities with higher quality factors(Q)and smaller mode volumes(V_m)have been developed,pushing forward studies from fundamental physics to functional photonics *** optomechanics provides an ideal platform for exploring the quantum nature of macroscopic objects[2]。

关键词：光学微腔光子器件物理功能量子信息处理时间性能相互作用制造技术质量因素

Macroscopic mechanical systems are entering the quantum world

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National Science Review 2015年第1期2卷 9-10页

作者： Yong-Chun Liu yun-feng xiao School of Physics Peking University Collaborative Innovation Center of Quantum Matter

In the classic Chinese novel Journey to the West,the Monkey King has a special power that enables him to be in two or more places ***,an amazing thing such as this could never happen in real ***,in the quantum world,where the motions of objects obey the rules of quantum mechanics,this could *** weird quantum rules usually only apply in the

关键词： In Macroscopic mechanical systems are entering the quantum world

Chiral emission and Purcell enhancement in a hybrid plasmonic-photonic microresonator

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Light(Science & Applications) 2020年第1期9卷 1961-1962页

作者： Qi-Tao Cao You-Ling Chen yun-feng xiao Frontiers Science Center for Nano-optoelectronics&School of Physics Peking UniversityBeijing 100871China State Key Laboratory on Integrated Optoelectronics Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China

A high-Q hybrid plasmonic-photonic microresonator,which consists of a dielectric microdisk hybridized with a plasmonic nanoantenna dimer,enables an enlarged local density of states of the optical field and chiral prop... 详细信息

关键词： cavity plasmon Chiral

Trapping photons with optical black hole

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Light(Science & Applications) 2023年第4期12卷 507-508页

作者： You-Ling Chen Qi-Tao Cao yun-feng xiao State Key Laboratory on Integrated Optoelectronics Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China Frontiers Science Center for Nano-optoelectronics&School of Physics Peking UniversityBeijing 100871China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006 ShanxiChina

An optical black-hole cavity based on transformation optics enables Q-factor enhancement and strong field confinement,by eliminating the intrinsic radiation loss of the conventional whispering-gallery modes,holding po... 详细信息

关键词： optics eliminating enable

On-chip lithium niobate microresonators for photonics applications

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Science China(Physics,Mechanics & Astronomy) 2020年第2期63卷 154-155页

作者： Li-Kun Chen yun-feng xiao State Key Laboratory for Artificial Microstructure and Mesoscopic Physics School of PhysicsPeking UniversityBeijing 100871China Nano-optoelectronics Frontier Center of the Ministry of Education(NFC-MOE)&Collaborative Innovation Center of Quantum Matter Beijing 100871China Collaborative Innovation Center of Extreme Optics Taiyuan 030006China Beijing Academy of Quantum Information Sciences Beijing 100193China

Since its first synthesis in 1960,lithium niobate(LiNO3,LN)has been widely used in modern optoelectronics industry and nonlinear *** high second-order susceptibility and wide transmission window render LN an excellent platform for applications ranging from frequency conversion to phase *** the past few years,LN microcavities have attracted intense interest for applications in nonlinear *** scheme combines the crystalline merits of LN and the enhanced lightmatter interaction of whispering gallery mode(WGM)microcavities[1-4].Owing to the commercial implementation of lithium niobate on insulator(LNOI)wafers,on-chip microstructured LN devices,such as optical waveguides and gratings,have been successfully *** this basis,novel photonics applications,including effi-cient electro-optical modulation,optical parametric conversion and optical combs,have been realized at the chip scale[5-7].

关键词： lithium niobate render

Optomechanical sensing with on-chip microcavities

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Frontiers of physics 2013年第5期8卷 475-490页

作者： Yi-Wen Hu yun-feng xiao Yong-Chun Liu Qihuang Gong State Key Laboratory for Artificial Microstructure and Mesoscopic Physics School of Physics Peking University Beijing 100871 China

The coupling between optical and mechanical degrees of freedom has been of broad interest for a long time. However, it is only until recently, with the rapid development of optical mierocavity research, that we are able to manipulate and utilize this coupling process. When a high Q microeavity couples to a mechanical resonator, they can consolidate into an optomeehanieal system. Benefitting from the unique characteristics offered by optomeehanical coupling, this hybrid system has become a promising platform for ultrasensitive sensors to detect displacement, mass, force and acceleration. In this review, we introduce the basic physical concepts of cavity optomechanies, and describe some of the most typical experimental cavity optomechanical systems for sensing applications. Finally, we discuss the noise arising from various sources and show the potentiality of optomechanical sensing towards quantum-noise-limited detection.

关键词： optical microcavities mechanical resonators cavity optomechanics optical sensing,integrated photonics

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What limits limits?

National Science Review 2021年第1期8卷 11-14页

作者： Yong-Chun Liu Kun Huang yun-feng xiao Lan Yang Cheng-Wei Qiu State Key Laboratory of Low-Dimensional Quantum Physics Department of Physics Frontier Science Center for Quantum Information Tsinghua University Department of Optics and Optical Engineering University of Science and Technology of China State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics School of Physics Peking University Department of Electrical and Systems Engineering Washington University Department of Electrical and Computer Engineering National University of Singapore

There are fundamental rules and principles setting the limits of physical systems. It triggers an interesting thought—can we break the limits under specific circumstances? A realistic system can only provide limited functionalities because its performance is physically constrained by some fundamental principles.‘Breaking the limit’, which usually implies that the capability of a system could be enhanced significantly,

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Effects of 1-methylcyclopropene and modified atmosphere packaging on fruit quality and superficial scald in Yali pears during storage

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Journal of Integrative Agriculture 2018年第7期17卷 1667-1675页

作者： feng yun-xiao CHENG Yu-dou HE Jin-gang LI Li-mei GUAN Jun-feng Institute of Genetics and Physiology Hebei Academy of Agriculture and Forestry SciencesShijiazhuang 050051P.R.China Plant Genetic Engineering Center of Hebei Province Shijiazhuang 050051P.R.China

The Yali pear（Pyrus bretschneideri Rehd.） is susceptible to superficial scald during prolonged cold storage and at shelf life. This study investigated the effects of 1-methylcyclopropene（1-MCP） and modified atmosphere packaging（MAP） on changes of fruit quality and superficial scald during cold storage and at shelf life in Yali pear. Compared with MAP, the combination of MAP and 1-MCP（MAP＋1-MCP） treatment reduced the carbon dioxide and ethylene content inside the packaging bag. The 1-MCP, MAP, and MAP＋1-MCP treatments reduced the superficial scald index, malondialdehyde content, O2^-· production rate and relative conductivity and inhibited the accumulation of α-farnesene and conjugated trienes in the peel. 1-MCP and MAP＋1-MCP treatments maintained a higher phenolic content and enhanced the catalase and superoxide dismutase activities in the fruit, while reduced activities of lipoxygenase and polyphenol oxidase in the peel preceding the onset of superficial scald. Comprehensive analysis indicated that the MAP＋1-MCP treatment is the most effective method tested for improving the quality of Yali pears during cold storage and at shelf life.

关键词： pear 1-methycyclopropene modified atmosphere packaging superficial scald browning

Laser particles with omnidirectional emission for cell tracking

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Light(Science & Applications) 2021年第2期10卷 197-207页

作者： Shui-Jing Tang Paul H.Dannenberg Andreas C.Liapis Nicola Martino Yue Zhuo yun-feng xiao Seok-Hyun yun Harvard Medical School and Wellman Center for Photomedicine Massachusetts General HospitalBostonMAUSA State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics School of PhysicsPeking University100871 BeijingChina Harvard-MIT Health Sciences and Technology Massachusetts Institute of TechnologyCambridgeMAUSA

The ability to track individual cells in space over time is crucial to analyzing heterogeneous cell ***,microlaser particles have emerged as unique optical probes for massively multiplexed single-cell ***,the microlaser far-field emission is inherently direction-dependent,which causes strong intensity fluctuations when the orientation of the particle varies randomly inside ***,we demonstrate a general solution based on the incorporation of nanoscale light scatterers into *** schemes are developed by introducing either boundary defects or a scattering layer into microdisk *** resulting laser output is omnidirectional,with the minimum-to-maximum ratio of the angle-dependent intensity improving from 0.007(-24 dB)to>0.23(-6dB).After transfer into live cells in vitro,the omnidirectional laser particles within moving cells could be tracked continuously with high signal-to-noise ratios for 2 h,while conventional microlasers exhibited frequent signal loss causing tracking failure.

关键词： scattering directional intensity