Chinese Physics B最新文献_第10页

Engineering the spectra of photon triplets generated from micro/nanofiber 对微型/纳米纤维产生的光子三重子的光谱进行工程设计

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-01-09 DOI: 10.1088/1674-1056/ad1c5d

Chuan Qu, Dongqin Guo, Xiaoxiao Li, Zhenqi Liu, Yi Zhao, Shenghai Zhang, Zhengtong Wei

{"title":"Engineering the spectra of photon triplets generated from micro/nanofiber","authors":"Chuan Qu, Dongqin Guo, Xiaoxiao Li, Zhenqi Liu, Yi Zhao, Shenghai Zhang, Zhengtong Wei","doi":"10.1088/1674-1056/ad1c5d","DOIUrl":"https://doi.org/10.1088/1674-1056/ad1c5d","url":null,"abstract":"\u0000 Quantum light sources are the core resources for photonics-based quantum information processing. We investigate the spectral engineering of photon triplets generated by third-order spontaneous parametric down-conversion in micro/nanofiber. The phase mismatching at one-third pump frequency gives rise to non-degenerate photon triplets, the joint spectral intensity of which has an elliptical locus with a fixed eccentricity of $frac{sqrt{6}}{3}$. Therefore, we propose a frequency-division scheme to separate non-degenerate photon triplets into three channels with high heralding efficiency for the first time. Choosing an appropriate pump wavelength can compensate for the fabrication errors of micro/nanofiber and also generate narrowband, non-degenerate photon triplet sources with high signal-to-noise ratio. Furthermore, the long-period micro/nanofiber grating introduces a new controllable degree of freedom to tailor phase matching, resulting from the periodic oscillation of dispersion. In this scheme, the wavelength of photon triplets can be flexibly tuned using quasi-phase matching. We study the generation of photon triplets from this novel perspective of spectrum engineering, and we believe that this work will accelerate the practical implementation of photon triplets in quantum information processing.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":"57 19","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139441950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A global model of intensity autocorrelation to determine laser pulse duration 确定激光脉冲持续时间的强度自相关全局模型

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-01-09 DOI: 10.1088/1674-1056/ad1c57

Yufei Peng, Liqiang Liu, Lihong Hong, Zhiyuan Li

{"title":"A global model of intensity autocorrelation to determine laser pulse duration","authors":"Yufei Peng, Liqiang Liu, Lihong Hong, Zhiyuan Li","doi":"10.1088/1674-1056/ad1c57","DOIUrl":"https://doi.org/10.1088/1674-1056/ad1c57","url":null,"abstract":"\u0000 We present a new global model of collinear autocorrelation based on second harmonic generation nonlinearity. The model is rigorously derived from the nonlinear coupled wave equation specific to the autocorrelation measurement configuration, without requiring a specific form of the incident pulse function. A rigorous solution of the nonlinear coupled wave equation is obtained in the time domain and expressed in a general analytical form. The global model fully accounts for the nonlinear interaction and propagation effects within nonlinear crystals, which are not captured by the classical local model. To assess the performance of the global model compared to the classic local model, we investigate the autocorrelation signals obtained from both models for different incident pulse waveforms and different full-width half-maximums (FWHM). When the incident pulse waveform is Lorentzian with a FWHM of 200fs, the global model predicts an autocorrelation signal FWHM of 399.9fs, while the classic local model predicts a FWHM of 331.4fs. The difference between the two models is 68.6fs, corresponding to an error of 17.2%. Similarly, for a sech-type incident pulse with a FWHM of 200fs, the global model predicts an autocorrelation signal FWHM of 343.9fs, while the local model predicts a FWHM of 308.8fs. The difference between the two models is 35.1fs, with an error of 10.2%. We further examine the behavior of the models for Lorentzian pulses with FWHMs of 100fs, 200fs, and 500fs. The differences between the global and local models are 17.1fs, 68.6fs, and 86.0fs, respectively, with errors approximately around 17%. These comparative analyses clearly demonstrate the superior accuracy of the global model in intensity autocorrelation modeling.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":"45 44","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139442292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Superconductivity in kagome metal ThRu3Si2 神户金属 ThRu3Si2 的超导性

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-01-09 DOI: 10.1088/1674-1056/ad1c5e

Yi Liu, Jing Li, Wu-Zhang Yang, Jia-Yi Lu, Bo-Ya Cao, Hua-Xun Li, Wan-li Chai, Si-Qi Wu, Bai-Zhuo Li, Yun-Lei Sun, W. Jiao, Wang Cao, Xiao-Feng Xu, Ren Zhi, G. Cao

引用次数: 0

One-step quantum dialogue 一步式量子对话

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-01-09 DOI: 10.1088/1674-1056/ad1c5c

Peng-Hui Zhu, W. Zhong, Ming‐Ming Du, Xi-Yun Li, Lan Zhou, Yu‐Bo Sheng

引用次数: 0

Anomalous Valley Hall Effect in Two-dimensional Valleytronic Materials 二维谷电子材料中的反常谷霍尔效应

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-01-09 DOI: 10.1088/1674-1056/ad1c59

Hongxin Chen, Xiaobo Yuan, Junfeng Ren

引用次数: 0

Erratum to “Atomic-scale electromagnetic theory bridging optics in microscopic world and macroscopic world” 为 "连接微观世界和宏观世界光学的原子尺度电磁理论 "所作的勘误

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-01-02 DOI: 10.1088/1674-1056/ad19d8

Zhi-Yuan Li, Jianfeng Chen

引用次数: 0

Biodegradable and flexible ι-carrageenan based RRAM with ultralow power consumption 基于ι-卡拉胶的可生物降解柔性超低功耗 RRAM

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-01-02 DOI: 10.1088/1674-1056/ad19d4

Jing-Yao Bian, Ye Tao, Zhong-Qiang Wang, Xiao-Ning Zhao, Ya Lin, Hai-Yang Xu, and Yi-Chun Liu

{"title":"Biodegradable and flexible ι-carrageenan based RRAM with ultralow power consumption","authors":"Jing-Yao Bian, Ye Tao, Zhong-Qiang Wang, Xiao-Ning Zhao, Ya Lin, Hai-Yang Xu, and Yi-Chun Liu","doi":"10.1088/1674-1056/ad19d4","DOIUrl":"https://doi.org/10.1088/1674-1056/ad19d4","url":null,"abstract":"\u0000 Transient memories, which can physically disappear without leaving traceable remains over a period of normal operation, are attracting increasing attention for potential applications in the fields of data security and green electronics. Resistive random access memory (RRAM) is a promising candidate for next-generation memory. In this context, biocompatible ι-carrageenan (ι-car), extracted from natural seaweed, is introduced for the fabrication of RRAM devices (Ag/ι-car/Pt). Taking advantage of the complexation processes between the functional groups (C-O-C, C-O-H, et al.) and Ag metal ions, a lower migration barrier of Ag ions and a high-speed switching (22.2 ns for SET operation/26 ns for RESET operation) were achieved, resulting in an ultralow power consumption of 56 fJ. And the prepared Ag/ι-car/Pt RRAM devices also revealed the capacities of multilevel storage and flexible. In addition, thanks to the hydrophilic groups of ι-car molecule, the RRAM devices can be rapidly dissolved in deionized (DI) water within 13 minutes, showing excellent transient characteristic. This work demonstrates that ι-car based RRAM devices have great potential for applications in secure storage applications, flexible electronics and transient electronics.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":"15 6","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139452783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of carrier density and interactions on pairing symmetry in a t2g model 载流子密度和相互作用对 t2g 模型配对对称性的影响

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-01-01 DOI: 10.1088/1674-1056/ad1094

Yun-Xiao Li, Wen-Han Xi, Zhao-Yang Dong, Zi-Jian Yao, Shun-Li Yu, Jian-Xin Li

{"title":"Effects of carrier density and interactions on pairing symmetry in a t2g model","authors":"Yun-Xiao Li, Wen-Han Xi, Zhao-Yang Dong, Zi-Jian Yao, Shun-Li Yu, Jian-Xin Li","doi":"10.1088/1674-1056/ad1094","DOIUrl":"https://doi.org/10.1088/1674-1056/ad1094","url":null,"abstract":"By utilizing the fluctuation exchange approximation method, we perform a study on the superconducting pairing symmetry in a t2g three-orbital model on the square lattice. Although the tight-binding parameters of the model are based on Sr2RuO4, we have systematically studied the evolution of superconducting pairing symmetry with the carrier density and interactions, making our findings relevant to a broader range of material systems. Under a moderate Hund’s coupling, we find that spin fluctuations dominate the superconducting pairing, leading to a prevalent spin-singlet pairing with a d\u0000<italic toggle=\"yes\">x</italic>\u00002–<italic toggle=\"yes\">y</italic>\u00002\u0000-wave symmetry for the carrier density within the range of <italic toggle=\"yes\">n</italic> = 1.5–4 per site. By reducing the Hund’s coupling, the charge fluctuations are enhanced and play a crucial role in determining the pairing symmetry, leading to a transition of the pairing symmetry from the spin-singlet d\u0000<italic toggle=\"yes\">x</italic>\u00002–<italic toggle=\"yes\">y</italic>\u00002\u0000-wave to the spin-triplet p-wave. Furthermore, we find that the superconducting pairings are orbital dependent. As the carrier density changes from <italic toggle=\"yes\">n</italic> = 4 to <italic toggle=\"yes\">n</italic> = 1.5, the active orbitals for superconducting pairing shift from the quasi-two-dimensional orbital d\u0000<italic toggle=\"yes\">xy</italic>\u0000 to the quasi-one-dimensional orbitals d\u0000<italic toggle=\"yes\">xz</italic>\u0000 and d\u0000<italic toggle=\"yes\">yz</italic>\u0000.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":"31 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139092085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effective transmittance of Fabry–Perot cavity under non-parallel beam incidence 法布里-珀罗腔在非平行光束入射下的有效透射率

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-01-01 DOI: 10.1088/1674-1056/ad0ec3

Yin-Sheng Lv, Pin-Hua Xie, Jin Xu, You-Tao Li, Hua-Rong Zhang

{"title":"Effective transmittance of Fabry–Perot cavity under non-parallel beam incidence","authors":"Yin-Sheng Lv, Pin-Hua Xie, Jin Xu, You-Tao Li, Hua-Rong Zhang","doi":"10.1088/1674-1056/ad0ec3","DOIUrl":"https://doi.org/10.1088/1674-1056/ad0ec3","url":null,"abstract":"The Fabry–Pérot (FP) resonant cavity is widely used in laser and spectroscopic measurements due to its unique interference transfer function (ITF). In the ideal case of parallel incident light, the ITF of the FP resonant cavity can be expressed by the Airy function. However, in reality, it is difficult to achieve perfect parallelism with collimated beams. In this article, a theoretical model is established for non-parallel light incidence, which assumes that the non-parallel incident light is a cone-shaped beam, and the cone angle is used to quantify the non-parallelism of the beam. The transmittance function of the FP resonant cavity under non-parallel light incidence is derived. The accuracy of the model is experimentally verified. Based on this model, the effects of divergence angle, tilt angle and FP cavity parameters (reflectivity, cavity length) on the ITF are studied. The reasons for the decrease in peak value, broadening and asymmetry of the interference peak under non-parallel light incidence are explained. It is suggested that a fine balance between the interference peak and the collimation effect of the incident light should be considered in the design and application of FP resonant cavities, especially for tilted applications such as angle-scanned spectroscopy. The research results of this article have certain significance for the design and application of FP resonant cavities.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":"27 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139092142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Versatile and controlled quantum teleportation network 多功能可控量子传送网络

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2023-12-29 DOI: 10.1088/1674-1056/ad1981

Yao-Yao Zhou, Peng-Xian Mei, Yan-Hong Liu, Liang Wu, Yan-Xiang Li, Zhi-Hui Yan, Xiao-Jun Jia

引用次数: 0