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Imaging through scattering media via spatial-temporal encoded pattern illumination

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Photonics Research 2022年第7期10卷 1689-1694页

作者： XINGCHEN ZHAo XIAoYU NIE ZHENHUAN YI TAo PENG marlan o.scully Institute for Quantum Science and Engineering Texas A&M UniversityCollege StationTexas 77843USA School of Physics Xi’an Jiaotong UniversityXi’an 710049China Baylor University WacoTexas 76706USA Princeton University PrincetonNew Jersey 08544USA

optical imaging through scattering media has long been a *** approaches have been developed for focusing light or imaging objects through scattering media,but usually,they are either invasive,limited to stationary or slow-moving media,or require high-resolution cameras and complex algorithms to retrieve the *** utilizing spatial-temporal encoded patterns(STEPs),we introduce a technique for the computation of imaging that overcomes these *** a single-pixel photodetector,we demonstrate non-invasive imaging through scattering *** technique is insensitive to the motion of the ***,we demonstrate that our image reconstruction algorithm is much more efficient than correlation-based algorithms for single-pixel imaging,which may allow fast imaging for applications with limited computing resources.

关键词： media scattering illumination

Enhanced four-wave mixing process near the excitonic resonances of bulk MoS_2

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Photonics Research 2019年第3期7卷 251-259页

作者： BRIAN A.Ko ALEXEI V.SoKoLoV marlan o.scully ZHENRoNG ZHANG Ho WAI HoWARD LEE Department of Physics Baylor University The Institute for Quantum Science and Engineering Texas A&M University College Station Princeton University Princeton

Two-dimensional materials are generating great interest due to their unique electrical and optical *** particular, transition metal dichalcogenides such as molybdenum disulfide(MoS_2) are attractive materials due to the existence of a direct band gap in the monolayer limit that can be used to enhance nonlinear optical phenomena, such as Raman spectroscopy. Here, we have investigated four-wave mixing processes in bulk MoS_2 using a multiplex coherent anti-Stokes Raman spectroscopy setup. The observed four-wave mixing signal has a resonance at approximately 680 nm, corresponding to the energy of the A excitonic transition of MoS_2. This resonance can be attributed to the increased third-order nonlinear susceptibility at wavelengths near the excitonic transition. This phenomenon could open the path to using MoS_2 as a substrate for enhancing four-wave mixing processes such as coherent anti-Stokes Raman spectroscopy.

关键词： Two-dimensional materials excitonic resonances MoS2

Measurement of the Seperation between Atoms beyond Diffraction Limit

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Measurement of the Seperation between Atoms beyond Diffracti...

第十二届全国量子光学学术会议

作者： Jrg Evers marlan o.scully M．Suhail Zubairy Max-Planck-Institut für Kernphysik Saupfercheckweg 1 D-69117 HeidelbergGermany Department of Physics Texas A＆M University College StationTX 77843-4242USA Department of Physics Texas A＆M University College StationTX 77843-4242USA

＜正＞We propose a scheme to obtain the distance of two identical atoms placed inside the standing wave field by monitoring the collective resonance fluorescence spectrum emitted by the two particles. We find three different parameter ranges, depending on the distance of the atoms as compared to the transition wavelength. For large interparticle distances, dipole-dipole coupling is negligible, and the main system evolution arises from the

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超辐射晶格研究进展

中国基础科学 2024年第3期26卷 31-36,43页

作者：蔡晗徐兴奇王大伟刘仁保朱诗尧司嘉理浙江大学物理学院杭州310027 浙江大学光电科学与工程学院杭州310027 浙江大学极端光学技术与仪器全国重点实验室杭州310027 香港中文大学物理系中国香港999077 得州农工大学量子科学与工程研究所得克萨斯77843美国

量子模拟是指利用可控量子系统模拟哈密顿量的演化过程,为研究量子多体问题提供了超越经典算力的途径。冷原子光晶格作为常用的量子模拟平台,实现了一系列重要量子物态的模拟,但仍受制于量子调控所导致的加热效应。为解决调控与低温之... 详细信息

量子模拟是指利用可控量子系统模拟哈密顿量的演化过程,为研究量子多体问题提供了超越经典算力的途径。冷原子光晶格作为常用的量子模拟平台,实现了一系列重要量子物态的模拟,但仍受制于量子调控所导致的加热效应。为解决调控与低温之间的矛盾,提出一种基于室温原子集体激发态的晶格结构并用于量子模拟,即动量空间的超辐射晶格。介绍超辐射晶格的基本原理和最新实验进展,包括手征边缘流、平带局域化、动力学局域化和非局域化等重要固体物理现象的模拟以及晶格几何相位的测量。超辐射晶格可用于发展光学二极管等光学器件,并为量子精密测量及量子模拟提供新的技术和方法。

关键词：超辐射动量空间晶格量子模拟

Directional coherent light via intensity-induced sideband emission

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Light(Science & Applications) 2016年第1期5卷 33-38页

作者： Andrew J Traverso Chris o’Brien Brett H Hokr Jonathan V Thompson Luqi Yuan Charles W Ballmann Anatoly A Svidzinsky Georgi I Petrov marlan o.scully Vladislav V Yakovlev Texas A&M University College StationTX 77843USA Princeton University PrincetonNJ 08544USA Baylor University WacoTX 76798USA

We introduce a unique technique for generating directional coherent emissions that could be utilized to create coherent sources in a wide range of frequencies from the extreme ultraviolet(XUV)to the deep *** is accomplished without population inversion by pumping a two-level system with a far-detuned strong optical field that induces the splitting of the two-level system.A nonlinear process of four-wave mixing then occurs across the split system,driving coherent emission at sidebands both redand blue-detuned from the pump frequency,and propagates both forward and backward along the pump beam *** observed this phenomenon in dense rubidium vapor along both the D_(1) and D_(2) *** sideband emission exhibits a short pulse duration(o1 ns)with threshold-like behavior dependent on both the pump intensity and Rb vapor *** technique offers a new capability for manipulating the emission frequency simply through intensity-induced atomic modulation that can be scaled to most frequency regimes using various atomic/molecular ensembles and pump energies.

关键词： coherent emission collective coherence four-wave mixing

Schwannomas provide insight into the role of p75^(NTR) and merlin in Schwann cells following nerve injury and during regeneration

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Neural Regeneration Research 2016年第1期11卷 73-74页

作者： Elise Cheng marlan R.Hansen Department of otolaryngology – Head and Neck Surgery University of Iowa Hospitals and Clinics Department of Neurosurgery University of Iowa Hospitals and Clinics

Peripheral nerve injury leads to Wallerian degeneration of severed axons,leaving the Schwann cell（SC）sheath *** SCs may then either survive and remyelinate a regenerating axon,or they may undergo cell *** SCs provide trophic support and guidance cues to regenerating nerve fibers,SC loss severely hampers nerve regeneration（Hall,1986）.

关键词： Schwann regeneration degeneration insight sheath sought survive behind characterize leaving

新的无创伤式心脏压力测量技术——气泡的超声谐振散射

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电子技术应用 1978年第3期 52-55页

作者： William M.Fairbank marlan o.Soully 彭永杰

本文提出并解析了一种无创伤式心脏测量的新技术。这种技术能测出某些小气泡(注入血液循环系统的)在通过心脏时散射的超声频谱,并证明了在这些频谱上观察到的谐振频率与心脏的压力变化成正比。因而可以把谐振的变差定标给出心脏房室内... 详细信息

本文提出并解析了一种无创伤式心脏测量的新技术。这种技术能测出某些小气泡(注入血液循环系统的)在通过心脏时散射的超声频谱,并证明了在这些频谱上观察到的谐振频率与心脏的压力变化成正比。因而可以把谐振的变差定标给出心脏房室内压力的幅度。文中介绍了这种方法在实验室的初步测试,证明了所予言的变化与气泡在水中的谐振频率上的压力是一致的。

关键词：气泡谐振频率谐振散射射频谱 RF 谱无创伤心脏压力测量压力计量力学测量

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烃类聚集的封堵条件评价

国外油气勘探 1985年第6期 13-24页

作者： marlan W.DoWNEY 童晓光

从认识到烃类的聚集要求烃类从富含有机质的生油岩中生成,储存于孔隙性和渗透性的储集层中,并被自然封堵所圈闭,才开始有现代石油地质学。圈闭几何形态的认识和制图是勘探家70多年来研究的主要方面。人们对赋存油气的储集层性质作了广... 详细信息

从认识到烃类的聚集要求烃类从富含有机质的生油岩中生成,储存于孔隙性和渗透性的储集层中,并被自然封堵所圈闭,才开始有现代石油地质学。圈闭几何形态的认识和制图是勘探家70多年来研究的主要方面。人们对赋存油气的储集层性质作了广泛和深入研究。确定油气在何地怎样生成,怎样运移、分离和转变的技术,

关键词：封堵层储层运移储集层烃类地层圈闭

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工业废气治理成效研究——以各省级区域为例

环境科学与管理 2023年第8期48卷 33-38页

作者：李林燠玛尔湖兰·霍依巴哈尔董小林长安大学水利与环境学院陕西西安710054 长安大学环境经济研究所陕西西安710054

为研究工业废气污染治理成效,以30个省级区域作为研究对象,提出针对工业废气治理成效的评价指标体系,以CRITIC法和熵权法组合对各指标进行赋权,使用二级模糊综合评价法对治理成效进行量化计算,得到各省级区域的治理成效指数,提出成效投... 详细信息

为研究工业废气污染治理成效,以30个省级区域作为研究对象,提出针对工业废气治理成效的评价指标体系,以CRITIC法和熵权法组合对各指标进行赋权,使用二级模糊综合评价法对治理成效进行量化计算,得到各省级区域的治理成效指数,提出成效投入指数,对治理成效与GDP进行联合分析。结果表明工业污染治理投资占比对废气治理成效的评价占有主要影响,在提升治理成效时应重点考虑。根据联合分析结果将省级区域分为单位GDP取得治理成效很好、较好和一般3类,排名前三的是青海、宁夏、海南。

关键词：工业废气治理成效指数联合分析省级区域