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Stimulated Brillouin interaction between guided phonons and photons in a lithium niobate waveguide

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Science China(Physics,Mechanics & Astronomy) 2024年第1期67卷 173-175页

作者： Yuan-Hao Yang Jia-Qi Wang Zheng-Xu Zhu Xin-Biao Xu Qiang Zhang Juanjuan Lu Yu Zeng chun-hua dong Luyan Sun Guang-Can Guo Chang-Ling Zou CAS Key Laboratory of Quantum Information University of Science and Technology of ChinaHefei 230026China CAS Center for Excellence in Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Opto-ElectronicsShanxi UniversityTaiyuan 030006China School of Information Science and Technology ShanghaiTech UniversityShanghai 201210China Center for Quantum Information Institute for Interdisciplinary Information SciencesTsinghua UniversityBeijing 100084China

The Brillouin scattering is one of the strongest nonlinear optical effects in dielectrics[1].In particular,the backward Brillouin scattering(BBS)provides an efficient method to achieve low-noise optical gain for active photonics[2]and the coherent interconnects between 10 GHz phonons and photons[3].However,previous studies on BBS are primarily limited to the unconfined phonons[1]or phonon confined in suspended structures[4-6].

关键词： scattering waveguide Brillouin

Atom-referenced and stabilized soliton microcomb

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Science China(Physics,Mechanics & Astronomy) 2024年第2期67卷 2-8页

作者： Rui Niu Shuai Wan Tian-Peng hua Wei-Qiang Wang Zheng-Yu Wang Jin Li Zhu-Bo Wang Ming Li Zhen Shen Yu Robert Sun Shui-Ming Hu Brent ELittle Sai Tak Chu Wei Zhao Guang-Can Guo Chang-Ling Zou Yun-Feng Xiao Wen-Fu Zhang chun-hua dong State Key Laboratory of Transient Optics and Photonics Xi’an Institute of Optics and Precision MechanicsChinese Academy of SciencesXi’an 710119China CAS Key Laboratory of Quantum Information University of Science and Technology of ChinaHefei 230026China CAS Center for Excellence in Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China University of Chinese Academy of Sciences Beijing 100049China Department of Chemical Physics University of Science and Technology of ChinaHefei 230026China Department of Physics and Materials Science City University of Hong KongHong Kong 999077China State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics School of PhysicsPeking UniversityBeijing 100871China

For the applications of the frequency comb in microresonators,it is essential to obtain a fully frequency-stabilized microcomb laser *** this study,we present a system for generating a fully atom-referenced stabilized soliton *** pump light around 1560.48 nm is locked to an ultra-low-expansion(ULE)*** pump light is then frequency-doubled and referenced to the atomic transition *** repetition rate of the soliton microcomb is injection-locked to an atomic-clockstabilized radio frequency(RF)source,leading to mHz stabilization at 1 *** a result,all comb lines have been frequencystabilized based on the atomic reference and the ULE cavity,achieving a very high precision of approximately 18 Hz at 1 s,corresponding to the frequency stability of 9.5×10^(-14).Our approach provides a fully stabilized microcomb experiment scheme with no requirement of f-2f technique,which could be easily implemented and generalized to various photonic platforms,thus paving the way towards the ultraprecise optical sources for high precision spectroscopy.

关键词： microcavity frequency comb dissipative Kerr solitons fully stabilized microcomb

Phase-space tailoring for deterministic and in-situ regulation of photon transport

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Science China(Physics,Mechanics & Astronomy) 2022年第5期65卷 141-142页

作者： chun-hua dong CAS Key Laboratory of Quantum Information University of Science and Technology of ChinaHefei 230026China CAS Center For Excellence in Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China

Manipulating optical fields in microcavities is of great significance in fundamental optical physics and the development of advanced optical technology[1-7].In previous work,manipulating light dynamics in optical microcavities was carried out in real or momentum *** it has been successfully applied in many fields such as quantum optics and precision measurement.

关键词： space measurement momentum

Phase-controlled quantum optomechanics

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Science China(Physics,Mechanics & Astronomy) 2023年第3期66卷 189-190页

Quantum entanglement,featuring nonclassical correlations between distinct and usually spatially separated systems,is one of the key traits of quantum *** creating and sharing entangled states between different nodes in a quantum network,a variety of novel quantum technologies well beyond the abilities of clas sical devices can be realized,ranging from quantum sensing to quantum information processing or communication.

关键词： quantum spatially separated

Highly tunable broadband coherent wavelength conversion with a fiber-based optomechanical system

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Advanced Photonics 2022年第5期4卷 27-35页

作者： Xiang Xi Chang-Ling Zou chun-hua dong Xiankai Sun The Chinese University of Hong Kong Department of Electronic EngineeringShatinHong Kong SARChina University of Science and Technology of China CAS Key Laboratory of Quantum InformationHefeiChina University of Science and Technology of China CAS Center for Excellence in Quantum Information and Quantum PhysicsHefeiChina

Modern information networks are built on hybrid systems working at disparate optical *** interconnects for converting photons between different wavelengths are highly *** coherent interconnects have conventionally been realized with nonlinear optical effects,those systems require demanding experimental conditions,such as phase matching and/or cavity enhancement,which not only bring difficulties in experimental implementation but also set a narrow tuning bandwidth(typically in the MHz to GHz range as determined by the cavity linewidth).Here,we propose and experimentally demonstrate coherent information transfer between two orthogonally propagating light beams of disparate wavelengths in a fiber-based optomechanical system,which does not require phase matching or cavity enhancement of the pump *** coherent process is demonstrated by interference phenomena similar to optomechanically induced transparency and *** scheme not only significantly simplifies the experimental implementation of coherent wavelength conversion but also extends the tuning bandwidth to that of an optical fiber(tens of THz),which will enable a broad range of coherent-optics-based applications,such as optical sensing,spectroscopy,and communication.

关键词： cavity optomechanics coherent wavelength conversion optomechanically induced transparency

Optimal investment based on relative performance and weighted utility

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Applied Mathematics(A Journal of Chinese Universities) 2024年第2期39卷 328-342页

作者： WANG Lei dong Ying-hui hua chun-rong Department of Mathematics Suzhou University of Science and TechnologySuzhou 215009China Changshu Institute of Technology Changshu 215500China

This paper studies the optimal portfolio allocation of a fund manager when he bases decisions on both the absolute level of terminal relative performance and the change value of terminal relative performance comparison to a predefined reference point. We find the optimal investment strategy by maximizing a weighted average utility of a concave utility and an Sshaped utility via a concavification technique and the martingale method. Numerical results are carried out to show the impact of the extent to which the manager pays attention to the change of relative performance related to the reference point on the optimal terminal relative performance.

关键词： relative performance weighted utility S-shaped utility concavification

Single-sideband microwave-to-optical conversion in high-Q ferrimagnetic microspheres

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Photonics Research 2022年第3期10卷 820-827页

作者： Cheng-Zhe Chai Zhen Shen Yan-Lei Zhang Hao-Qi Zhao Guang-Can Guo Chang-Ling Zou chun-hua dong CAS Key Laboratory of Quantum Information University of Science and Technology of ChinaHefei 230026China CAS Center for Excellence in Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China Current address:Department of Electrical and Systems Engineering University of PennsylvaniaPhiladelphiaPennsylvania 19104USA

Coherent conversion of microwave and optical photons can significantly expand the capabilities of information processing and communications ***,we experimentally demonstrate the microwave-to-optical frequency conversion in a magneto-optical whispering gallery mode *** applying a magnetic field parallel to the microsphere equator,the intracavity optical field will be modulated when the magnon is excited by the microwave drive,leading to a microwave-to-optical conversion via the magnetic Stokes and anti-Stokes scattering *** observed single-sideband conversion phenomenon indicates a nontrivial optical photon–magnon interaction mechanism derived from the magnon that induced both the frequency shift and modulated coupling rate of optical *** addition,we demonstrate the single-sideband frequency conversion with an ultrawide tuning range up to 2.5 GHz,showing its great potential in microwave-to-optical conversion.

关键词： tuning scattering microwave

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Cavity optomechanics

Fundamental Research 2023年第1期3卷 1-2页

作者： Jie-Qiao Liao chun-hua dong Min Wang Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education Key Laboratory for Matter Microstructure and Function of Hunan ProvinceDepartment of Physics and Synergetic Innovation Center for Quantum Effects and ApplicationsHunan Normal UniversityChangsha 410081China CAS Key Laboratory of Quantum Information University of Science and Technology of ChinaHefei 230026China Beijing Academy of Quantum Information Sciences Beijing 100193China

Cavity optomechanics,a fast-developing research frontier related to quantum physics,optics,and nano-science,addresses the radiationpressure couplings between the electromagnetic fields in cavities and the mechanical oscillation of micro-and nano-scale mechanical resonators,and explores the fundamental physical phenomena and effects induced by the optomechanical interactions,as well as the applications of optomechanical effects to modern quantum technologies.

关键词： quantum frontier optics

Emerging material platforms for integrated microcavity photonics

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Science China(Physics,Mechanics & Astronomy) 2022年第10期65卷 10-28页

作者： Jin Liu Fang Bo Lin Chang chun-hua dong Xin Ou Blake Regan Xiaoqin Shen Qinghai Song Baicheng Yao Wenfu Zhang Chang-Ling Zou Yun-Feng Xiao State Key Laboratory of Optoelectronic Materials and Technologies School of PhysicsSun Yat-sen UniversityGuangzhou 510000China MOE Key Laboratory of Weak-Light Nonlinear Photonics TEDA Institute of Applied Physics and School of PhysicsNankai UniversityTianjin 300071China State Key Laboratory of Advanced Optical Communications System and Networks School of ElectronicsPeking UniversityBeijing 100871China CAS Key Lab of Quantum Information University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Functional Material for Informatics Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China School of Mathematical and Physical Sciences University of Technology SydneyUltimo 2007Australia School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System Harbin Institute of TechnologyShenzhen 518055China Key Laboratory of Optical Fiber Sensing and Communications(Ministry of Education) University of Electronic Science and Technology of ChinaChengdu 611731China State Key Laboratory of Transient Optics and Photonics Xi’an Institute of Optics and Precision MechanicsChinese Academy of SciencesXi’an 710119China State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics School of PhysicsPeking UniversityBeijing 100871China

Many breakthroughs in technologies are closely associated with the deep understanding and development of new material *** the main material used in microelectronics,Si also plays a leading role in the development of integrated *** indirect bandgap,absence ofχ(2)nonlinearity and the parasitic nonlinear absorptions at the telecom band of Si imposed technological bottlenecks for further improving the performances and expanding the functionalities of Si microcavities in which the circulating light intensity is dramatically *** past two decades have witnessed the burgeoning of the novel material platforms that are compatible with the complementary metal-oxide-semiconductor(COMS)*** particular,the unprecedented optical properties of the emerging materials in the thin film form have resulted in revolutionary progress in microcavity *** this review article,we summarize the recently developed material platforms for integrated photonics with the focus on chip-scale microcavity *** material characteristics,fabrication processes and device applications have been thoroughly discussed for the most widely used new material *** also discuss open challenges and opportunities in microcavity photonics,such as heterogeneous integrated devices,and provide an outlook for the future development of integrated microcavities.

关键词： microcavity integrated optics nonlinear optics