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arXiv 2025年

作者： Xu, Chengqing He, Lixin Tao, Wanchen Zhu, Xiaosong Wang, Feng Xu, Long Xu, Lu Lan, Pengfei Averbukh, Ilya Prior, Yehiam Lu, Peixiang Wuhan National Laboratory for Optoelectronics School of Physics Huazhong University of Science and Technology Wuhan430074 China Hubei Key Laboratory of Optical Information and Pattern Recognition Wuhan Institute of Technology Wuhan430205 China Department of Physics Xiamen University Xiamen361005 China AMOS Department of Chemical and Biological Physics The Weizmann Institute of Science Rehovot7610001 Israel Department of Chemistry University of British Columbia VancouverBCV6T 1Z1 Canada

Ultrashort laser pulses carrying orbital angular momentum (OAM) have become essential tools in Atomic, Molecular, and optical (AMO) studies, particularly for investigating strong-field light-matter interactions. However, controlling and generating ultrashort vortex pulses presents significant challenges, since their broad spectral content complicates manipulation with conventional optical elements, while the high peak power inherent in short-duration pulses risks damaging optical components. Here, we introduce a novel method for generating and controlling broadband ultrashort vortex beams by exploiting the non-adiabatic alignment of linear gas-phase molecules induced by vector beams. The interaction between the vector beam and the gas-phase molecules results in spatially varying polarizability, imparting a phase modulation to a probe laser. This process effectively creates a tunable "molecular waveplate" that adapts naturally to a broad spectral range. By leveraging this approach, we can generate ultrashort vortex pulses across a wide range of wavelengths. Under optimized gas pressure and interaction length conditions, this method allows for highly efficient conversion of circularly polarized light into the desired OAM pulse, thus enabling the generation of few-cycle, high-intensity vortex beams. This molecular waveplate, which overcomes the limitations imposed by conventional optical elements, opens up new possibilities for exploring strong-field physics, ultrafast science, and other applications that require high-intensity vortex beams. Copyright © 2025, The Authors. All rights reserved.

关键词： Molecules

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Experimental Implementation of the Fractional Vortex Hilbert's Hotel

arXiv

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arXiv 2022年

作者： Chen, Xi Wang, Shun You, Chenglong Magaña-Loaiza, Omar S. Jin, Rui-Bo Hubei Key Laboratory of Optical Information and Pattern Recognition Wuhan Institute of Technology Wuhan430205 China Quantum Photonics Laboratory Department of Physics & Astronomy Louisiana State University Baton RougeLA70803 United States Guangdong Provincial Key Laboratory of Quantum Science and Engineering Southern University of Science and Technology Shenzhen518055 China

The Hilbert hotel is an old mathematical paradox about sets of infinite numbers. This paradox deals with the accommodation of a new guest in a hotel with an infinite number of occupied rooms. Over the past decade, there have been many attempts to implement these ideas in photonic systems. In addition to the fundamental interest that this paradox has attracted, this research is motivated by the implications that the Hilbert hotel has for quantum communication and sensing. In this work, we experimentally demonstrate the fractional vortex Hilbert's hotel scheme proposed by G. Gbur [Optica 3, 222-225 (2016)]. More specifically, we performed an interference experiment using the fractional orbital angular momentum of light to verify the Hilbert's infinite hotel paradox. In our implementation, the reallocation of a guest in new rooms is mapped to interference fringes that are controlled through the topological charge of an optical beam. © 2022, CC BY.

关键词： Hotels

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Polarization Multiplexing of an Ultrafast Single-Photon Detector by optical Kerr Gating

Polarization Multiplexing of an Ultrafast Single-Photon Dete...

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Pacific Rim Conference on Lasers and Electro-Optics (CLEO/Pacific Rim)

作者： Takahisa Kuwana Masahiro Yabuno Fumihiro China Shigehito Miki Hirotaka Terai Peter J. Mosley Rui-Bo Jin Ryosuke Shimizu The University of Electro-Communications Tokyo Japan Advanced ICT Research Institute National Institute of Information and Communications Technology Kobe Japan Department of Physics Centre for Photonics and Photonic Materials University of Bath Bath UK Hubei Key Laboratory of Optical Information and Pattern Recognition Wuhan Institute of Technology Wuhan China

We develop an ultrafast single-photon detector with optical Kerr gating using a photonic crystal fiber. Adopting the polarization-multiplexing technique, we achieved the subpicosecond resolution in the single-photon d...

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Transient Symmetry Breaking in a Pumped Crystal via the Electric-Field-Dependent Stark Effect

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Physical Review Letters 2025年第22期134卷 223801-223801页

作者： Liang Li Wei He Shiqi Liang Pengfei Lan Peixiang Lu Wuhan National Laboratory for Optoelectronics and School of Physics Huazhong University of Science and Technology Wuhan 430074 China Hubei Key Laboratory of Optical Information and Pattern Recognition Wuhan Institute of Technology Wuhan 430205 China

We have investigated the transient properties of a ZnO crystal under a pump pulse (pumped crystal) using a pump-probe methodology. By monitoring the second harmonic of the weak probe pulse generated from the pumped crystal, we observe that the angular distribution of the second-harmonic yield becomes asymmetric compared to that without the pump. Importantly, the asymmetry of the second-harmonic generation (SHG) appears to be retarded by nearly 25 fs relative to the pump pulse, and its scaling shows a highly nonlinear dependence on the pump intensity. In addition, by using a two-color pump pulse, we further demonstrate that the asymmetry of SHG is controllable by adjusting the electric field of the two-color pulse. These phenomena can be attributed to the strong-field-induced electric-field-dependent Stark effect. Unlike the conventional intensity-dependent Stark effect, where only energy levels of the pumped target move, electric-field-dependent Stark effect indicates that the excitation induced by the pump pulse can distort the orbital and plays a vital role on the transient property of the pumped crystal. Our work suggests a new freedom for rationally designing the transient property of crystals by controlling the electric field of the pump pulse, which paves the way for realizing petahertz high-speed signal processing.

关键词： Stark effect

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Nonlinear Non-Hermitian Skin Effect and Skin Solitons in Temporal Photonic Feedback Lattices

arXiv

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arXiv 2024年

作者： Wang, Shulin Wang, Bing Liu, Chenyu Qin, Chengzhi Zhao, Lange Liu, Weiwei Longhi, Stefano Lu, Peixiang Wuhan National Laboratory for Optoelectronics School of Physics Huazhong University of Science and Technology Wuhan430074 China School of Physics Southeast University Nanjing211189 China Dipartimento di Fisica Politecnico di Milano Piazza Leonardo da Vinci 32 MilanoI-20133 Italy Instituto de Fisica Interdisciplinar y Sistemas Complejos Palma de MallorcaE-07122 Spain Hubei Key Laboratory of Optical Information and Pattern Recognition Wuhan Institute of Technology Wuhan430205 China

Non-Hermitian skin effect (NHSE), i.e., the localization of eigenstates near lattice boundaries, has recently spurred tremendous interest in topological physics. Beyond the well-explored linear NHSE, the interplay of nonlinearity and skin localization represents a cutting-edge area of research, offering novel insights into wave propagation and localization control in various physical systems. Unlike the linear NHSE successfully observed in weak-power optical systems, the observation of nonlinear NHSE and resulting ‘skin solitons’ remains so far elusive, mainly due to the high energy levels required in most of nonlinear effects. Here we report the experimental demonstration of nonlinear NHSE in a Kerr nonlinear temporal photonic lattice, where the high-power limitation and lack of tunability intrinsic to optical materials are overcome by an artificial nonlinearity arising from opto-electronic feedback. Thanks to Kerr self-trapping, the nonlinear NHSE is demonstrated to possess much better localization strength and robustness at the preferred boundary compared to the linear case. Away from the preferred boundary, Kerr self-trapping can even inhibit NHSE-induced transport and form stable skin solitons. Harnessing the nonlinearity-controlled NHSE, we judiciously design an optical router with a flexibly-tuned output port. Our findings promise great applications in robust signal transmission, routing, and processing. Copyright © 2024, The Authors. All rights reserved.

关键词： Solitons

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Witnessing Entangled Two-Photon Absorption via Quantum Interferometry

Witnessing Entangled Two-Photon Absorption via Quantum Inter...

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CLEO: Fundamental Science, CLEO:FS 2023 - Part of Conference on Lasers and Electro-Optics 2023

作者： Martínez-Tapia, Áulide Corona-Aquino, Samuel Triana-Arango, Freiman You, Chenglong Jin, Rui-Bo Magaña-Loaiza, Omar S. Dong, Shi-Hai U'Ren, Alfred B. de J. León-Montiel, Roberto Instituto de Ciencias Nucleares Universidad Nacional Autónoma de México Apartado Postal 70-543 Cd. Mx.04510 Mexico Centro de Investigaciones en Optica AC Apartado Postal 37150 Gto Leon Mexico Quantum Photonics Laboratory Department of Physics and Astronomy Louisiana State University Baton RougeLA70803 United States Hubei Key Laboratory of Optical Information and Pattern Recognition Wuhan Institute of Technology Wuhan430205 China Research Center for Quantum Physics Huzhou University Huzhou313000 China Laboratorio de Ciencias de la Informacion Cuantica CIC Instituto Politecnico Nacional UPALM CDMXC.P 07700 Mexico

We demonstrate that a two-photon, N00N-state interferometer is insensitive to linear (single-photon) losses, and thus capable to unequivocally certify entangled two-photon absorption (eTPA) in arbitrary-sample transmi...

ISBN: (纸本)9781957171258

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Mid-infrared spectrally-pure single-photon states generation from 22 nonlinear optical crystals

arXiv

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arXiv 2023年

作者： Cai, Wu-Hao Tian, Ying Jin, Rui-Bo Hubei Key Laboratory of Optical Information and Pattern Recognition Wuhan Institute of Technology Wuhan430205 China Research Institute of Electrical Communication Tohoku University 2-1-1 Katahira Sendai980-8577 Japan Graduate School of Engineering Tohoku University 6-6 Aramaki Aza Aoba Aoba-ku Sendai980-8579 Japan Guangdong Provincial Key Laboratory of Quantum Science and Engineering Southern University of Science and Technology Shenzhen518055 China

We theoretically investigate the preparation of pure-state single-photon source from 14 birefringent crystals (CMTC, THI, LiIO3, AAS, HGS, CGA, TAS, AGS, AGSe, GaSe, LIS, LISe, LGS, and LGSe) and 8 periodic poling crystals (LT, LN, KTP, KN, BaTiO3, MgBaF4, PMN-0.38PT, and OP-ZnSe) in a wavelength range from 1224 nm to 11650 nm. The three kinds of group-velocity-matching (GVM) conditions, the phase matching conditions, the spectral purity, and the Hong-Ou-Mandel interference are calculated for each crystal. This study may provide high-quality single-photon sources for quantum sensing, quantum imaging, and quantum communication applications at the mid-infrared wavelength range. © 2023, CC BY.

关键词： Selenium compounds

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Witnessing Entangled Two-Photon Absorption via Quantum Interferometry

Witnessing Entangled Two-Photon Absorption via Quantum Inter...

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2023 Conference on Lasers and Electro-Optics, CLEO 2023

作者： Martínez-Tapia, Áulide Corona-Aquino, Samuel Triana-Arango, Freiman You, Chenglong Jin, Rui-Bo Magaña-Loaiza, Omar S. Dong, Shi-Hai U'Ren, Alfred B. de León-Montiel, Roberto J. Instituto de Ciencias Nucleares Universidad Nacional Autónoma de México Apartado Postal 70-543 Cd. Mx.04510 Mexico Centro de Investigaciones en Optica AC Apartado Postal 37150 Gto Leon Mexico Quantum Photonics Laboratory Department of Physics & Astronomy Louisiana State University Baton RougeLA70803 United States Hubei Key Laboratory of Optical Information and Pattern Recognition Wuhan Institute of Technology Wuhan430205 China Research Center for Quantum Physics Huzhou University Huzhou313000 China Laboratorio de Ciencias de la Informacion Cuantica CIC Instituto Politecnico Nacional UPALM CDMXC.P 07700 Mexico

ISBN: (纸本)9781957171258

关键词： Photons

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Molecular alignment stimulated by the coupled pulses of the ultrashort laser pulse and the terahertz pulse

Molecular alignment stimulated by the coupled pulses of the ...

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International Conference on Infrared and Millimeter Waves

作者： Hai-Wei Du Jiang Long Rui-Bo Jin Tao Wu Yan-Jun Fu School of Measuring and Optical Engineering Nanchang Hangkong University Nanchang China Key Laboratory of Opto-Electronic Information Science and Technology of Jiangxi Province Nanchang Hangkong University Nanchang China Hubei Key Laboratory of Optical Information and Pattern Recognition Wuhan Institute of Technology Wuhan China

Field-free molecular alignment can be induced by the strong ultrashort laser pulses. Here, the improvement of the alignment is completed by the coupled pulses of the ultrashort laser pulse and the strong broadband terahertz pulse. The gaseous CO molecules are aligned by such coupled pulses, and the evolution of its states are studied based on the rigid rotor approximation theory with the simulation method. The influences of the pulses parameters on the alignment are also discussed.

关键词： Laser theory Rotors Broadband communication Gas lasers Approximation methods optical pulse generation

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Extraction of non-uniform reflected laser lines based on multi-channel region constraint method

Extraction of non-uniform reflected laser lines based on mul...

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International Conference on information Science and Control Engineering (ICISCE)

作者： Shiyang Li Jinmeng Wu Yunfei Wang Jian Huang Pan Chen Guangya Wang Hubei Key Laboratory of Optical Information and Pattern Recognition Wuhan Institute of Technology Wuhan China

At present, the existing laser line extraction algorithms need to be in good lighting conditions to get better results. However, in practical application, due to the uneven illumination of the scene or the inconsistent reflection degree of the scanned object surface, the laser line extraction results will be greatly reduced. In some conditions, in order to improve the scanning efficiency, the grid laser line is used, but the grid laser is used Lines usually cause uneven distribution of laser lines. This paper proposes a method of extracting grid laser lines under the condition of non-uniform reflection. In the first step, the influence of global light can be eliminated using the difference between global illumination intensity and its first moment, and the image blocks can be classified using the average illumination intensity of local area to obtain the Region of interest (ROI). In the second step, a constrained region can be calculated by using edge gradient variance of local area and edge gradient maximization. In the third step, the center coordinates of sub-pixel laser line are finally obtained by combining the constrained region and illumination intensity map with Steger algorithm. The method used in this paper needs less empirical parameters to be set manually, and has a wider range of application. The accuracy of extraction is consistent with that of Steger algorithm. From the experimental results of this paper, we can see that we get more effective data, lower error rate and stronger robustness.

关键词： Laser theory information science Control engineering Error analysis Image edge detection Lighting Surface emitting lasers

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