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学者姓名:张彦鹏

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< Page ,Total 41 >
Interferograms of Votex FWM Beam for Nonlinear Spatial Filter in Photonic Band Gap SCIE
期刊论文 | 2019 , 11 (1) | IEEE PHOTONICS JOURNAL
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Abstract :

We analyze the properties and interferograms of vortex four-wave mixing (FWM) beams by varying the incident angle of the probe field. Based on the properties, we propose the model of a new type of nonlinear spatial filter without diffraction using a Bragg grating in the nonlinear FWM process. We show the evolutions of shapes and interferograms of probe transmission signal (PTS) and FWM by scanning the probe detuning, and demonstrate the Kerr nonlinearity can manipulate the shapes and spatial location of vortex PTS and FWM images. Further, we can determine the center position of the new type of nonlinear filter through interference patterns and use the Kerr nonlinearity of related fields to control the nonlinear filter precisely. In addition, the interferograms of the reflected signal from the photonic band gap (PBG) structure are studied both in experiment and theory. We demonstrate that the number of fork-like patterns of reflected signal changes from one to three, revealing that the superposition of first-order and third-order beams in the reflected signal from PBG structure creates an inverted fork-like pattern.

Keyword :

four-wave mixing interference Nonlinear optics coherent optical effects

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GB/T 7714 Wang, Zhiguo , Sun, Yanyong , Yang, Jiawei et al. Interferograms of Votex FWM Beam for Nonlinear Spatial Filter in Photonic Band Gap [J]. | IEEE PHOTONICS JOURNAL , 2019 , 11 (1) .
MLA Wang, Zhiguo et al. "Interferograms of Votex FWM Beam for Nonlinear Spatial Filter in Photonic Band Gap" . | IEEE PHOTONICS JOURNAL 11 . 1 (2019) .
APA Wang, Zhiguo , Sun, Yanyong , Yang, Jiawei , Zhang, Yanpeng . Interferograms of Votex FWM Beam for Nonlinear Spatial Filter in Photonic Band Gap . | IEEE PHOTONICS JOURNAL , 2019 , 11 (1) .
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Spatial image evolution of the Rydberg nonlinear process controlled by a multiparameter probe field EI Scopus SCIE
期刊论文 | 2019 , 433 , 150-154 | Optics Communications
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Abstract :

We report the regularity of experimental evolution of Rydberg six-wave mixing (SWM) spatial images that were effectively controlled by adjusting various probe field parameters. Due to the high-order nonlinear Rydberg process, evolution of the spatial defocusing and splitting was observed by changing the detuning, polarization, and power of the probe field. Modulated spatial images obtained in a Rydberg nonlinear medium were found to be related to the refractive index. This study clarifies the spatial transmission rules for Rydberg SWM, which can be used to study the light field modulation of space imaging of a Rydberg atom ensemble and can provide evidence for the design of advanced materials. © 2018 Elsevier B.V.

Keyword :

Advanced materials Experimental evolution Multiparameters Nonlinear medium Nonlinear process Six-wave mixing Spatial images Spatial transmission

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GB/T 7714 Che, Junling , Jiang, Weiqi , Lan, Guangchen et al. Spatial image evolution of the Rydberg nonlinear process controlled by a multiparameter probe field [J]. | Optics Communications , 2019 , 433 : 150-154 .
MLA Che, Junling et al. "Spatial image evolution of the Rydberg nonlinear process controlled by a multiparameter probe field" . | Optics Communications 433 (2019) : 150-154 .
APA Che, Junling , Jiang, Weiqi , Lan, Guangchen , Wang, Shucai , Xiang, Siwei , Zhang, Yanpeng . Spatial image evolution of the Rydberg nonlinear process controlled by a multiparameter probe field . | Optics Communications , 2019 , 433 , 150-154 .
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Stochastic local operations and classical communication invariants via square matrix SCIE
期刊论文 | 2019 , 29 (2) | LASER PHYSICS
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In this paper, we raise a few corrections from the Li et al paper (2015 Phys. Rev. A 91 012302). We obtain some stochastic local operations and classical communication (SLOCC) invariants from second degree to sixth degree by defining square matrices. The relation of SLOCC invariants and the character polynomial of the square matrix are defined for three and four qubit states. This method comes as a useful resource in determining SLOCC invariants for n-qubit states.

Keyword :

four qubit stochastic local operations and classical communication (SLOCC) invariant square matrice

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GB/T 7714 Zha, Xinwei , Ahmed, Irfan , Zhang, Da et al. Stochastic local operations and classical communication invariants via square matrix [J]. | LASER PHYSICS , 2019 , 29 (2) .
MLA Zha, Xinwei et al. "Stochastic local operations and classical communication invariants via square matrix" . | LASER PHYSICS 29 . 2 (2019) .
APA Zha, Xinwei , Ahmed, Irfan , Zhang, Da , Feng, Wen , Zhang, Yanpeng . Stochastic local operations and classical communication invariants via square matrix . | LASER PHYSICS , 2019 , 29 (2) .
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Phosphate Ion-Driven BiPO4:Eu Phase SCIE
期刊论文 | 2019 , 123 (7) , 4424-4432 | JOURNAL OF PHYSICAL CHEMISTRY C
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Abstract :

Phase transition of crystals is one of the most important topics in condensed matter physics, chemistry, and materials sciences in which the basic physical and chemical properties of the crystals themselves are first determined during atomic rearrangements. In general, achieving the phase transition needs high temperature, high pressure, and heavy doping treatments. Here, we describe a BiPO4:Eu crystal system in which the phase transition from hexagonal to low-temperature monoclinic structure can be effectively manipulated by a simple method of increasing the anion (PO43-) concentration in the reaction solution. This is associated with the improvement in the free energy in the crystallographic system in which only the crystallographic phase having the energy lower than the system free energy is finally formed. The observed morphologies of the BiPO4:Eu crystals within the low temperature monoclinic structure are divided into four types and each of them stems from the geometrical evolution of the standard monoclinic structure. The low-temperature monoclinic structure exhibits superior performance in luminescence as compared to hexagonal one due to the extent of significant nonradiative process in the lattices of the latter. The idea provided here could be extended to understanding the effects of reaction anion or cation on the phase transition of other important down/upconversion luminescence materials such as YPO4 and Na(Y,Gd)F-4. A question on how many crystal systems. can achieve phase transition through the method reported here needs and deserves to be explored.

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GB/T 7714 Li, Peng , Yuan, Taoli , Li, Feng et al. Phosphate Ion-Driven BiPO4:Eu Phase [J]. | JOURNAL OF PHYSICAL CHEMISTRY C , 2019 , 123 (7) : 4424-4432 .
MLA Li, Peng et al. "Phosphate Ion-Driven BiPO4:Eu Phase" . | JOURNAL OF PHYSICAL CHEMISTRY C 123 . 7 (2019) : 4424-4432 .
APA Li, Peng , Yuan, Taoli , Li, Feng , Zhang, Yanpeng . Phosphate Ion-Driven BiPO4:Eu Phase . | JOURNAL OF PHYSICAL CHEMISTRY C , 2019 , 123 (7) , 4424-4432 .
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Asymmetric conical diffraction in dislocated edge-centered square lattices SCIE
期刊论文 | 2019 , 27 (5) , 6300-6309 | OPTICS EXPRESS
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Abstract :

We investigate linear and nonlinear evolution dynamics of light beams propagating along a dislocated edge-centered square lattice. The band structure and Brillouin zones of this novel lattice are analyzed analytically and numerically. Asymmetric Dirac cones as well as the corresponding Bloch modes of the lattice are obtained. By adopting the tight-binding approximation, we give an explanation of the asymmetry of Dirac cones. By utilizing the appropriate Bloch modes, linear and nonlinear asymmetric conical diffraction are demonstrated. We find that both the focusing and defocusing nonlinearities can enhance the asymmetry of the conical diffractions. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

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GB/T 7714 Zhong, Hua , Wang, Rong , Belic, Milivoj R. et al. Asymmetric conical diffraction in dislocated edge-centered square lattices [J]. | OPTICS EXPRESS , 2019 , 27 (5) : 6300-6309 .
MLA Zhong, Hua et al. "Asymmetric conical diffraction in dislocated edge-centered square lattices" . | OPTICS EXPRESS 27 . 5 (2019) : 6300-6309 .
APA Zhong, Hua , Wang, Rong , Belic, Milivoj R. , Zhang, Yanpeng , Zhang, Yiqi . Asymmetric conical diffraction in dislocated edge-centered square lattices . | OPTICS EXPRESS , 2019 , 27 (5) , 6300-6309 .
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A Character-Level Method for Text Classification EI Scopus
会议论文 | 2018 , 402-406 | 2nd IEEE Advanced Information Management, Communicates, Electronic and Automation Control Conference, IMCEC 2018
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Abstract :

We propose a language model of mix CNN (Convolution Neural Network) with bi-RNN (Bi-directional Recurrent Neural Network) to classify the text at the character-level. Unlike word-level model is that avoiding the problem of unregistered words and improves the robustness of the text representation in character-level model. The language model mainly uses the data augment by different convolution filters of CNN and then the bi-RNN obtain the contextual information in both directions to classify the text. The results show that this model have a better performance than the common CNN and LSTM(long short-term memory) classification methods. © 2018 IEEE.

Keyword :

Bi-directional Character level Classification methods Contextual information Convolution filters Convolution neural network Text classification Text representation

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GB/T 7714 Hua, Qu , Qundong, Shi , Dingchao, Jiang et al. A Character-Level Method for Text Classification [C] . 2018 : 402-406 .
MLA Hua, Qu et al. "A Character-Level Method for Text Classification" . (2018) : 402-406 .
APA Hua, Qu , Qundong, Shi , Dingchao, Jiang , Lei, Guo , Yanpeng, Zhang , Pengkang, Liu . A Character-Level Method for Text Classification . (2018) : 402-406 .
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Novel Rydberg eight-wave mixing process controlled in the nonlinear phase of a circularly polarized field EI SCIE Scopus
期刊论文 | 2018 , 26 (3) , 3054-3066 | OPTICS EXPRESS
WoS CC Cited Count: 1 SCOPUS Cited Count: 1
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Abstract :

Eight-wave mixing (EWM) is a seven-order nonlinear process that can reflect nonclassical features within multiple optical fields, thus imparting certain advantages. In this study, we directly observed the EWM spectrum and spatial images that show Rydberg atoms under a circularly polarized probe field in a five-level coherently prepared atomic system. Such circular polarization dressing fields can obtain high-contrast Rydberg EWM overcome the difficulties of several multi-wave mixing (MWM) signals always coexist, and the multi-parameter controlling Rydberg EWM mechanism is established by changing the power and detuning and polarization of the dressing fields. These controllable high-order MWM processes present a contrast ratio of 96% and a narrow linewidth of <30 MHz compared with low-order mixing processes under identical conditions (e.g., six-wave mixing). The corresponding MWM spatial images are presented, and they can partly reflect the underlying nonlinear phase variation, whereas the given theory can predict the experimental results. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

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GB/T 7714 Che, Junling , Zhang, Zhaoyang , Hu, Mingliang et al. Novel Rydberg eight-wave mixing process controlled in the nonlinear phase of a circularly polarized field [J]. | OPTICS EXPRESS , 2018 , 26 (3) : 3054-3066 .
MLA Che, Junling et al. "Novel Rydberg eight-wave mixing process controlled in the nonlinear phase of a circularly polarized field" . | OPTICS EXPRESS 26 . 3 (2018) : 3054-3066 .
APA Che, Junling , Zhang, Zhaoyang , Hu, Mingliang , Shi, Xuewei , Zhang, Yanpeng . Novel Rydberg eight-wave mixing process controlled in the nonlinear phase of a circularly polarized field . | OPTICS EXPRESS , 2018 , 26 (3) , 3054-3066 .
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Flip-flop Converter of Dual-bistability Using Cavity and Parametric Amplified Four-Wave Mixing SCIE PubMed Scopus
期刊论文 | 2018 , 8 | SCIENTIFIC REPORTS
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We study the realization of dual-bistability flip-flop converter in cavity and parametrically amplified four-wave mixing (FWM) process at a four-level cavity atomic system. Using the effect of nonreciprocity optical dual-bistability, we can obtain different output multi-mode states of probe transmission signal and FWM signal. We find the channel equalization ratio and optical contrast between multi-mode states is related to the degree of dual-bistability. Besides, the degree of dual-bistability can be controlled by the input parameters (frequency detuning and powers of the dressing beams). More, using electro-optical modulator and acoustic optical modulator to modulate the powers and frequency detuning, respectively, we can realize the fast conversion between different output states. And the switch speed of this flip-flop converter is about 16 ns. These outcomes may provide foundation for the development of all-optical devices and quantum information processing.

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GB/T 7714 Li, Kangkang , Bu, Renan , Wang, Xiuxiu et al. Flip-flop Converter of Dual-bistability Using Cavity and Parametric Amplified Four-Wave Mixing [J]. | SCIENTIFIC REPORTS , 2018 , 8 .
MLA Li, Kangkang et al. "Flip-flop Converter of Dual-bistability Using Cavity and Parametric Amplified Four-Wave Mixing" . | SCIENTIFIC REPORTS 8 (2018) .
APA Li, Kangkang , Bu, Renan , Wang, Xiuxiu , Chen, Haixia , Zhang, Dan , Li, Xinghua et al. Flip-flop Converter of Dual-bistability Using Cavity and Parametric Amplified Four-Wave Mixing . | SCIENTIFIC REPORTS , 2018 , 8 .
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Multi-dressing suppression and enhancement and all-optical switching in parametrically amplified four-wave mixing SCIE Scopus
期刊论文 | 2018 , 122 (1) | EPL
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We study different dressing effects in parametrically amplified four-wave mixing (PA-FWM) processes. By seeding a weak probe laser into the Stokes or anti-Stokes channel of the FWM, the gain process is generated in the so-called bright twin beams which are the probe and conjugate beams. The dressing types dramatically affect the gain factors in both the probe and conjugate channels. The gain factor of the FWM signal decreases under the cascade-type dressing and the signal's shape splits into two dips under this dressing type. However, the intensity of the FWM signal changes from suppression to enhancement under the parallel-type dressing. We will apply this switching process to all-optical switching. Copyright (C) EPLA, 2018

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GB/T 7714 Li, Xinghua , Zhang, Dan , Sun, Ming et al. Multi-dressing suppression and enhancement and all-optical switching in parametrically amplified four-wave mixing [J]. | EPL , 2018 , 122 (1) .
MLA Li, Xinghua et al. "Multi-dressing suppression and enhancement and all-optical switching in parametrically amplified four-wave mixing" . | EPL 122 . 1 (2018) .
APA Li, Xinghua , Zhang, Dan , Sun, Ming , Li, Kangkang , Wang, Zhiguo , Zhang, Yanpeng . Multi-dressing suppression and enhancement and all-optical switching in parametrically amplified four-wave mixing . | EPL , 2018 , 122 (1) .
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Investigation of multi-bunching by generating multi-order fluorescence of NV center in diamond SCIE Scopus
期刊论文 | 2018 , 20 (8) , 5721-5725 | PHYSICAL CHEMISTRY CHEMICAL PHYSICS
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Fabricating electronics from solid-state quantum emitters is a promising strategy for the miniaturization and integration of electronic devices. However, the practical realization of solid-state quantum devices and circuits for signal transmission and processing at room temperature has remained challenging. Herein, we investigated the multi-bunching phenomenon by generating multi-order fluorescence from a pseudo-thermal source at room temperature using the nitrogen-vacancy (NV) center in diamond. We demonstrate the shift in time of multi-bunching by controlling the effect of dressing to realize logical gates and transistor switching operations. We also suggest the optimization of the time propagation delay (TPD) of the gate circuit by changing the boxcar gate position.

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GB/T 7714 Tang, Haijun , Ahmed, Irfan , Puttapirat, Pargorn et al. Investigation of multi-bunching by generating multi-order fluorescence of NV center in diamond [J]. | PHYSICAL CHEMISTRY CHEMICAL PHYSICS , 2018 , 20 (8) : 5721-5725 .
MLA Tang, Haijun et al. "Investigation of multi-bunching by generating multi-order fluorescence of NV center in diamond" . | PHYSICAL CHEMISTRY CHEMICAL PHYSICS 20 . 8 (2018) : 5721-5725 .
APA Tang, Haijun , Ahmed, Irfan , Puttapirat, Pargorn , Wu, Tianhao , Lan, Yuwei , Zhang, Yanpeng et al. Investigation of multi-bunching by generating multi-order fluorescence of NV center in diamond . | PHYSICAL CHEMISTRY CHEMICAL PHYSICS , 2018 , 20 (8) , 5721-5725 .
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