arXiv - PHYS - Optics最新文献_第3页

Lithium Niobate Photonic Topological Insulator-based Multi-Wavelength Optical Demultiplexer with Piezoelectric Switch-Off 基于压电开关的铌酸锂光子拓扑绝缘体多波长光解复用器

arXiv - PHYS - Optics Pub Date : 2024-09-16 DOI: arxiv-2409.10658

Prithu Mahmud, Kaniz Fatema Supti, Sajid Muhaimin Choudhury

{"title":"Lithium Niobate Photonic Topological Insulator-based Multi-Wavelength Optical Demultiplexer with Piezoelectric Switch-Off","authors":"Prithu Mahmud, Kaniz Fatema Supti, Sajid Muhaimin Choudhury","doi":"arxiv-2409.10658","DOIUrl":"https://doi.org/arxiv-2409.10658","url":null,"abstract":"Photonic topological insulators provide unidirectional, robust,\u0000wavelength-selective transport of light at an interface while keeping it\u0000insulated at the bulk of the material. The non-trivial topology results in an\u0000immunity to backscattering, sharp turns, and fabrication defects. This work\u0000leverages these unique properties to design a 2-channel optical demultiplexer\u0000based on a lithium niobate photonic topological insulator with piezoelectric\u0000switch-off capabilities. A photonic topological insulator design for the\u0000demultiplexer allows for good wavelength selectivity, crosstalk as low as $-$54\u0000dB, and better isolation between output channels. The primary operating\u0000wavelengths presented are the telecommunication wavelengths of 1310 nm and 1550\u0000nm, but the use of the lithium niobate material allows operation at multiple\u0000operating wavelengths. Furthermore, we propose a post-fabrication method to\u0000switch off the topological protection and, thus, optical transmittance via an\u0000applied voltage utilizing the inverse piezoelectric effect of lithium niobate.\u0000This work will contribute to advancing lithium niobate integrated photonics and\u0000developing efficient, multi-wavelength, electrically controlled optical\u0000communication systems and integrated photonic circuits.","PeriodicalId":501214,"journal":{"name":"arXiv - PHYS - Optics","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of Moderate Refractive Index Nanoantennas for Enhancing the Photoluminescence Signal of Quantum Dots 评估用于增强量子点光致发光信号的中等折射率纳米天线

arXiv - PHYS - Optics Pub Date : 2024-09-16 DOI: arxiv-2409.10229

Rafael Ramos Uña, Braulio Garcia-Camara. and Angela I. Barreda

{"title":"Evaluation of Moderate Refractive Index Nanoantennas for Enhancing the Photoluminescence Signal of Quantum Dots","authors":"Rafael Ramos Uña, Braulio Garcia-Camara. and Angela I. Barreda","doi":"arxiv-2409.10229","DOIUrl":"https://doi.org/arxiv-2409.10229","url":null,"abstract":"The use of nanostructures to enhance the emission of single-photon sources\u0000has withdrawn some attention in last decade due to the development of quantum\u0000technologies. In particular, the use of metallic and high refractive index\u0000dielectric materials has been proposed. However, the utility of moderate\u0000refractive index dielectric nanostructures to achieve more efficient\u0000single-photon sources remains unexplored. Here, a systematic comparison of\u0000various metallic, high refractive index and moderate refractive index\u0000dielectric nanostructures has been performed to optimize the excitation and\u0000emission of a CdSe/ZnS single quantum dot at visible spectral region. Several\u0000geometries have been evaluated in terms of electric field enhancement and\u0000Purcell factor, considering the combination of metallic, high refractive index\u0000and moderate refractive index dielectric materials conforming homogeneous and\u0000hybrid nanocylinder dimers. Our results demonstrate that moderate refractive\u0000index dielectric nanoparticles can enhance the photoluminescence signal of\u0000quantum emitters due to their broader electric and magnetic dipolar resonances\u0000compared to high refractive index dielectric nanoparticles. However, hybrid\u0000combinations of metallic and high refractive index dielectric nanostructures\u0000offer the largest intensity enhancement and Purcell factors at the excitation\u0000and emission wavelengths of the quantum emitter, respectively. The results of\u0000this work may find applications in the development of single-photon sources","PeriodicalId":501214,"journal":{"name":"arXiv - PHYS - Optics","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optical resonators constitute a universal spin simulator 光学谐振器构成通用自旋模拟器

arXiv - PHYS - Optics Pub Date : 2024-09-16 DOI: arxiv-2409.10010

Wouter Verstraelen, Timothy C. H. Liew

引用次数: 0

Shaping space-time wavepackets beyond the paraxial limit using a dispersion magnifier 利用色散放大镜塑造超越准轴向极限的时空波包

arXiv - PHYS - Optics Pub Date : 2024-09-16 DOI: arxiv-2409.10454

Dongha Kim, Cheng Guo, Peter B. Catrysse, Shanhui Fan

引用次数: 0

Compact Inversely-Designed Vertical Coupler with Bottom Reflector for Sub-Decibel Fiber-to-Chip Coupling on Silicon-on-Insulator Platform 带底部反射器的紧凑型反向设计垂直耦合器，用于在硅绝缘体平台上实现亚分贝光纤到芯片耦合

arXiv - PHYS - Optics Pub Date : 2024-09-16 DOI: arxiv-2409.10660

Shiang-Yu Huang, Stefanie Barz

引用次数: 0

Can vortex quantum droplets be realized experimentally? 涡旋量子液滴可以通过实验实现吗？

arXiv - PHYS - Optics Pub Date : 2024-09-16 DOI: arxiv-2409.10390

Guilong Li, Zibin Zhao, Bin Liu, Yongyao Li, Yaroslav V. Kartashov, Boris A. Malomed

引用次数: 0

Cladding effect on the mode index engineered tuned cavity 覆层对模式指数工程调谐腔的影响

arXiv - PHYS - Optics Pub Date : 2024-09-15 DOI: arxiv-2409.09898

Mohit Khurana

引用次数: 0

Grafted AlGaAs/GeSn Optical Pumping Laser Operating up to 130 K 工作温度高达 130 K 的接枝 AlGaAs/GeSn 光学泵浦激光器

arXiv - PHYS - Optics Pub Date : 2024-09-15 DOI: arxiv-2409.09752

Jie Zhou, Daniel Vincent, Sudip Acharya, Solomon Ojo, Alireza Abrand, Yang Liu, Jiarui Gong, Dong Liu, Samuel Haessly, Jianping Shen, Shining Xu, Yiran Li, Yi Lu, Hryhorii Stanchu, Luke Mawst, Bruce Claflin, Parsian K. Mohseni, Zhenqiang Ma, Shui-Qing Yu

引用次数: 0

Room-temperature valley-selective emission enabled by planar chiral quasi-bound states in the continuum 连续体中平面手性准束缚态实现的室温谷选择性发射

arXiv - PHYS - Optics Pub Date : 2024-09-15 DOI: arxiv-2409.09806

Feng Pan, Xin Li, Amalya C. Johnson, Scott Dhuey, Ashley Saunders, Meng-Xia Hu, Jefferson P. Dixon, Sahil Dagli, Sze-Cheung Lau, Tingting Weng, Chih-Yi Chen, Jun-Hao Zeng, Rajas Apte, Tony F. Heinz, Fang Liu, Zi-Lan Deng, Jennifer A. Dionne

{"title":"Room-temperature valley-selective emission enabled by planar chiral quasi-bound states in the continuum","authors":"Feng Pan, Xin Li, Amalya C. Johnson, Scott Dhuey, Ashley Saunders, Meng-Xia Hu, Jefferson P. Dixon, Sahil Dagli, Sze-Cheung Lau, Tingting Weng, Chih-Yi Chen, Jun-Hao Zeng, Rajas Apte, Tony F. Heinz, Fang Liu, Zi-Lan Deng, Jennifer A. Dionne","doi":"arxiv-2409.09806","DOIUrl":"https://doi.org/arxiv-2409.09806","url":null,"abstract":"Optically addressable spin-photon interfaces in monolayers of transition\u0000metal dichalcogenides (TMDCs) are pivotal to realizing classical and quantum\u0000operations using photons. Valley pseudospin in TMDCs allows circularly\u0000polarized light to be coupled with electron (hole) spin, thus enabling\u0000initialization and readout of both classical and quantum information. Rapid\u0000valley-dephasing processes have impeded the development of scalable,\u0000high-performance valleytronic devices operating at room temperature. Here we\u0000demonstrate that a chiral resonant metasurface can enable room-temperature\u0000valley-selective emission. This platform, driven by chiral quasi-bound states\u0000in the continuum, provides circular eigen-polarization states featuring a high\u0000quality factor (Q-factor) and strong chiral near-field enhancement, and results\u0000in unitary emission circular dichroism (i.e. single-handed circularly polarized\u0000emission). Our fabricated high-Q-factor (> 200) Si chiral metasurfaces at\u0000visible wavelengths strongly enhance valley-selective optical transitions in\u0000devices incorporating MoSe2 monolayers under linearly polarized light\u0000excitation, achieving a high degree of optical circular polarization (DOP) from\u0000100 K to 294 K and reaching nearly 0.5 at 294 K. The high DOP is attributed to\u0000enhanced exciton/trion radiative recombination rates for a specific valley. Our\u0000work could facilitate the development of compact chiral classical and quantum\u0000light sources and the creation of molecular chiral polaritons for quantum\u0000enantioselective synthesis.","PeriodicalId":501214,"journal":{"name":"arXiv - PHYS - Optics","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Selective Excitation of Bloch Modes in Canalized Polaritonic Crystals 渠化极性晶体中布洛赫模式的选择性激发

arXiv - PHYS - Optics Pub Date : 2024-09-15 DOI: arxiv-2409.09782

Yanzhen Yin, Zhichen Zhao, Junbo Xu, Zerui Wang, Lei Zhou, Zhou Zhou, Yu Yin, Di Huang, Gang Zhong, Xiang Ni, Zhanshan Wang, Xinbin Cheng, Jingyuan Zhu, Qingdong Ou, Tao Jiang

{"title":"Selective Excitation of Bloch Modes in Canalized Polaritonic Crystals","authors":"Yanzhen Yin, Zhichen Zhao, Junbo Xu, Zerui Wang, Lei Zhou, Zhou Zhou, Yu Yin, Di Huang, Gang Zhong, Xiang Ni, Zhanshan Wang, Xinbin Cheng, Jingyuan Zhu, Qingdong Ou, Tao Jiang","doi":"arxiv-2409.09782","DOIUrl":"https://doi.org/arxiv-2409.09782","url":null,"abstract":"Polaritonic crystals (PoCs) have experienced significant advancements through\u0000involving hyperbolic polaritons in anisotropic materials such as\u0000$alpha$-MoO$_{rm 3}$, offering a promising approach for nanoscale light\u0000control and improved light-matter interactions. Notably, twisted bilayer\u0000$alpha$-MoO$_{rm 3}$ enables tunable iso-frequency contours (IFCs),\u0000especially generating flat IFCs at certain twist angles, which could enhance\u0000mode selectivity in their PoCs through the highly collimated and canalized\u0000polaritons. This study unveils the selective excitation of Bloch modes in PoCs\u0000with square-lattice structures on twisted bilayer $alpha$-MoO$_{rm 3}$ with\u0000canalized phonon polaritons. Through the optimization of the square lattice\u0000design, there is an effective redistribution of canalized polaritons into the\u0000reciprocal lattices of PoCs. Fine-tuning the periodicity and orientation of the\u0000hole lattice enables momentum matching between flat IFCs and co-linear\u0000reciprocal points, allowing precise and directional control over desired Bragg\u0000resonances and Bloch modes. This research establishes a versatile platform for\u0000tunable polaritonic devices and paves the way for advanced photonic\u0000applications.","PeriodicalId":501214,"journal":{"name":"arXiv - PHYS - Optics","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0