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Conference on Lasers and Electro-Optics (CLEO)

作者： Jialun Luo Yifei Geng Farhan Rana Gregory D. Fuchs Department of Physics Cornell University New York School of Electrical and Computer Engineering Cornell University New York School of Applied and Engineering Physics Cornell University New York

We report the first observation of optically detected magnetic resonance in defect-based single-photon emitters in GaN.

ISBN: (纸本)9781957171258

We report the first observation of optically detected magnetic resonance in defect-based single-photon emitters in GaN.

关键词： Defect center materials Integrated optical devices Magnetic fields Optical materials Photon correlations Quantum key distribution

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Aperiodicity and disorder as systematic spectral tuning mechanisms for plasmonic nanostructures

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Optics Express 2025年第11期33卷 23227-23243页

作者： Ekin Gunes Ozaktas Sreyas Chintapalli Eliza O’Reilly Susanna M Thon Department of Electrical Engineering and Ginzton Laboratory Stanford University USA Department of Electrical and Computer Engineering Johns Hopkins University USA Department of Physics and Astronomy Johns Hopkins University USA Department of Applied Mathematics and Statistics Johns Hopkins University USA eoreill2@jh.edu Department of Materials Science and Engineering Johns Hopkins University USA susanna.thon@jhu.edu

We demonstrate how aperiodicity and disorder can be used as quantifiable mechanisms for tuning the spectral response of plasmonic nanostructure arrays. We tune the extinction spectra of these arrays using deterministically aperiodic (quasicrystal), perturbed lattice (Bernoulli point process, frozen phonon disorder, long-range frozen phonon disorder), negatively correlated (Strauss point process), and positively correlated (Log Gaussian Cox point process) assemblies. We quantify this tuning by considering the local variance of the extinction spectra, demonstrating two orders of magnitude of tunability. Our structures have potential applications in plasmonic or waveguide-based optoelectronic devices such as photovoltaics and photosensing, where spectral tuning is critical to performance.

关键词： Electron beam lithography Fourier transforms Second harmonic generation Spectral properties Surface plasmon polaritons Surface plasmon resonance

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Wafer-level fabrication of Fabry- Pérot resonators with finesse exceeding one million

Wafer-level fabrication of Fabry- Pérot resonators with fin...

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2023 Conference on Lasers and Electro-Optics, CLEO 2023

作者： Jin, Naijun Liu, Yifan McLemore, Charles A. Luo, Yizhi Mason, David Kharel, Prashanta Diddams, Scott A. Quinlan, Franklyn Rakich, Peter Department of Applied Physics Yale University New HavenCT06520 United States National Institute of Standards and Technology 325 Broadway BoulderCO80305 United States Department of Physics University of Colorado Boulder 440 UCB BoulderCO80309 United States Electrical Computer and Energy Engineering 425 UCB BoulderCO80309 United States

We demonstrate a wafer-level fabrication technique for high-finesse Fabry-Pérot optical resonators based on reflow and optical contact bonding. These resonators have finesse exceeding one million at 1550 nm and c... 详细信息

ISBN: (纸本)9781957171258

关键词： Fabry-Perot interferometers

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Ge2Sb2Se4Te Phase Change Material Monolithic Platform for Integrated Photonics

Ge2Sb2Se4Te Phase Change Material Monolithic Platform for In...

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2024 Conference on Lasers and Electro-Optics, CLEO 2024

作者： Acharjee, Niloy Sun, Hongyi Ghosh, Siddhartha Ríos Ocampo, Carlos A. Institute for Research in Electronics & Applied Physics University of Maryland College ParkMD20742 United States Department of Electrical & Computer Engineering University of Maryland College ParkMD20742 United States Department of Materials Science & Engineering University of Maryland College ParkMD20742 United States Space Systems - Northrop Grumman 1 Space Park Blvd Redondo BeachCA90278 United States

ISBN: (纸本)9781957171395

We demonstrate a monolithic Ge2Sb2Se4Te platform for tunable photonic integrated circuits. We fabricated and measured various on-chip components, including waveguides with preliminary 55.7±3.65 dB/cm propagation loss. Refractive index tuning is demonstrated via post-fabrication localized crystallization. © Optica Publishing Group 2024 © 2024 The Author(s)

关键词： System-on-chip

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Discrete Event Simulation-Based Evaluation of a Single-Lane Synchronized Dual-Traffic Light Intersections

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Journal of computer and Communications 2023年第10期11卷 82-100页

作者： Chimezie Calistus Ogharandukun Martin Abdullahi Monday Essien Joe Department of Electrical/Electronic and Computer Engineering Veritas University Abuja Nigeria Department of Pure and Applied Physics Veritas University Abuja Nigeria Department of Computer Science Air Force Institute of Technology Kaduna Nigeria Department of Computer and Information Technology Veritas University Abuja Nigeria

This research involved an exploratory evaluation of the dynamics of vehicular traffic on a road network across two traffic light-controlled junctions. The study uses the case study of a one-kilometer road system modelled on Anylogic version 8.8.4. Anylogic is a multi-paradigm simulation tool that supports three main simulation methodologies: discrete event simulation, agent-based modeling, and system dynamics modeling. The system is used to evaluate the implication of stochastic time-based vehicle variables on the general efficiency of road use. Road use efficiency as reflected in this model is based on the percentage of entry vehicles to exit the model within a one-hour simulation period. The study deduced that for the model under review, an increase in entry point time delay has a domineering influence on the efficiency of road use far beyond any other consideration. This study therefore presents a novel approach that leverages Discrete Events Simulation to facilitate efficient road management with a focus on optimum road use efficiency. The study also determined that the inclusion of appropriate random parameters to reflect road use activities at critical event points in a simulation can help in the effective representation of authentic traffic models. The Anylogic simulation software leverages the Classic DEVS and Parallel DEVS formalisms to achieve these objectives.

关键词： Multi-Core Processing Distributed Computing Event-Driven Modelling Discrete Event Simulation Data Analysis and Visualization

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High Finesse, Air-Gap Optical Reference Cavity for Low Noise Microwave Generation

High Finesse, Air-Gap Optical Reference Cavity for Low Noise...

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2023 Conference on Lasers and Electro-Optics, CLEO 2023

作者： Liu, Yifan Lee, Dahyeon Jin, Naijun McLemore, Charles A. Luo, Yizhi Kelleher, Megan Rakich, Peter Diddams, Scott A. Quinlan, Franklyn Department of Physics University of Colorado Boulder 440 UCB BoulderCO80309 United States National Institute of Standards and Technology 325 Broadway BoulderCO80305 United States Department of Applied Physics Yale University New HavenCT06520 United States Electrical Computer and Energy Engineering 425 UCB BoulderCO80309 United States

We lock two, 1.2 THz-spaced lasers to a million-finesse air-gap optical cavity, demonstrating 40 dB common-mode phase noise rejection and a path towards compact, low noise, optically derived microwaves without ultrahi...

ISBN: (纸本)9781957171258

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Ge2Sb2Se4Te Phase Change Material Monolithic Platform for Integrated Photonics

Ge2Sb2Se4Te Phase Change Material Monolithic Platform for In...

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CLEO: Science and Innovations in CLEO 2024, CLEO: S and I 2024 - Part of Conference on Lasers and Electro-Optics

关键词： Photonic integrated circuits

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The Challenges of Music Deep Learning for Traditional Music 12

The Challenges of Music Deep Learning for Traditional Music

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12th International Conference on Modern Circuits and Systems Technologies, MOCAST 2023

作者： Moysis, Lazaros Iliadis, Lazaros Alexios Sotiroudis, Sotirios P. Kokkinidis, Kostas Sarigiannidis, Panagiotis Nikolaidis, Spiridon Volos, Christos Boursianis, Achilles D. Babas, Dimitrios Papadopoulou, Maria S. Goudos, Sotirios K. Aristotle University of Thessaloniki Laboratory of Nonlinear Systems - Circuits & Complexity School of Physics Thessaloniki Greece University of Western Macedonia Department of Mechanical Engineering Kozani Greece Aristotle University of Thessaloniki ELEDIA@AUTH School of Physics Thessaloniki54124 Greece University of Macedonia Department of Applied Informatics Thessaloniki Greece University of Western Macedonia Department of Electrical and Computer Engineering Kozani50131 Greece School of Physics Aristotle University of Thessaloniki Thessaloniki Greece International Hellenic University Department of Information and Electronic Engineering Sindos57400 Greece

ISBN: (纸本)9798350321074

Numerous applications for music listeners, educators, DJs, and musicians have been created over the past decade as the field of Music Deep Learning has expanded. Evidently, the majority of works rely on training their architectures using well-established databases, which consist primarily of Western popular music genres. This creates a deficiency in applications focusing on traditional and regional music, which are vital to preserving culture. As an increasing number of research groups begin to develop works centered on traditional music, several practical challenges for applying deep learning arise. This work discusses these issues and the future of deep learning in the study of traditional music. © 2023 IEEE.

关键词： Deep learning

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Interferometry Among Strongly Driven Quasiparticles with Distinct Dynamical and Geometrical Phases

Interferometry Among Strongly Driven Quasiparticles with Dis...

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2024 Conference on Lasers and Electro-Optics, CLEO 2024

作者： O'Hara, Seamus Costello, Joe Tian, Qi Wu, Qile West, Ken Pfeiffer, Loren Sherwin, Mark Wu, Liang Department of Physics Institute of Terahertz Science and Technology University of California Santa Barbara Santa BarbaraCA93106 United States Intelligence Community Post-Doctoral Research Fellowship Program PhiladelphiaPA19104 United States Department of Physics University of Pennsylvania PhiladelphiaPA19104 United States Department of Electrical and Computer Engineering Princeton University PrincetonNJ08542 United States

ISBN: (纸本)9781957171395

In this proceeding, we present polarization data of sidebands emitted from strongly driven quasiparticles, demonstrate the dependence of these data on various parameters of the external driving field, and describe the data using an analytical expression, dependent on driving field parameters and the effective Hamiltonian of the system. We propose using this method on spin-momentum locked systems, such as altermagnets, to observe and reconstruct sidebands which are influenced by the topology of individual bands. © Optica Publishing Group 2024 © 2024 The Author(s)

关键词： Topology

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Challenges of measuring spin Seebeck noise

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Physical Review B 2024年第10期109卷 104429-104429页

作者： Renjie Luo Xuanhan Zhao Tanner J. Legvold Liyang Chen Changjiang Liu Deshun Hong Anand Bhattacharya Douglas Natelson Department of Physics and Astronomy Rice University Houston Texas 77005 USA Applied Physics Program Smalley-Curl Institute Rice University Houston Texas 77005 USA Materials Science Division Argonne National Laboratory Lemont Illinois 60439 USA Department of Electrical and Computer Engineering Rice University Houston Texas 77005 USA Department of Materials Science and NanoEngineering Rice University Houston Texas 77005 USA

Just as electronic shot noise in driven conductors results from the granularity of charge and the statistical variation in the arrival times of charge carriers, there are predictions for fundamental noise in magnon currents due to angular momentum being carried by discrete excitations. The inverse spin Hall effect as a transduction mechanism to convert spin current into charge current raises the prospect of experimental investigations of such magnon shot noise. Spin Seebeck effect measurements have demonstrated the electrical detection of thermally driven magnon currents and have been suggested as an avenue for accessing spin current fluctuations. Using spin Seebeck structures made from yttrium iron garnet on gadolinium gallium garnet, we demonstrate the technical challenges inherent in such noise measurements. While there is a small increase in voltage noise in the inverse spin Hall detector at low temperatures associated with adding a magnetic field, the dependence on field orientation implies that this is not due to magnon shot noise. We describe theoretical predictions for the expected magnitude of magnon shot noise, highlighting ambiguities that exist. Further, we show that magnon shot noise detection through the standard inverse spin Hall approach is likely impossible due to geometric factors. Implications for future attempts to measure magnon shot noise are discussed.

关键词： Spin Seebeck effect Spin current Magnetic insulators Noise measurements

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