bluuebunny/crossref_metadata_2025 huggingface dataset:
A Polarization-Insensitive a-Si Grating Coupler on the Lithium Niobate-on-Insulator Platform
Authors: Labbé Fabien , Laila Alif Muthali , Ding Yunhong
Published: September 2024

We have designed, fabricated and characterized a polarization insensitive a-Si on Lithium Niobate grating coupler for both transverse electric and magnetic light coupling to Lithium Niobate waveguide, results in the coupling efficiency of −5 dB.
Non-Volatile reconfigurable transmissive notch filter using wide bandgap phase change material antimony sulfide
Authors: Tara Virat , Chen Rui , Froech Johannes , Fang Zhuoran , Fang Jie , Majumdar Arka
Published: September 2024

We experimentally demonstrate an electrically tunable notch filter. We observe a quality factor up to ~200 and demonstrate reversible tuning of a large volume (4.5 μm3) of Sb2S3 with resonance wavelength shift ~4 nm.
Flexible Frequency Conversion of Near-Visible Light in Linear Integrated Waveguides
Authors: Jaber Nicholas , Madaras Scott , Starbuck Andrew , Pomerene Andrew , Dallo Christina , Trotter Douglas C. , Gehl Michael , Otterstrom Nils
Published: September 2024

We demonstrate frequency conversion of near visible light using Bragg scattering four wave mixing in a low-loss (∼ 0.02 dB/cm) silicon nitride waveguide with a Kerr coefficient of ∼ 3 W
−
1m
−
1.
Hybrid metasurface color-filter arrays
Authors: Thuringer Alex J. , Sultan Mansoor , Hastings J. Todd
Published: September 2024

A new color filter array (CFA) uses nanofabricated metasurfaces to map four focusing filters to nine image pixels. This approach potentially offers higher stability, single-step fabrication, improved sensitivity, and high color accuracy.
Mode Splitting in Silicon Nitride Ring Resonators via Partial Sidewall Modulation
Authors: Kheyri Masoud , Zhang Shuangyou , Bi Toby , Pal Arghadeep , Zhang Hao , Zhang Yaojing , Alabbadi Abdullah , Butzen Eduard , Gannott Florentina , Gumann Alexander , Harder Irina , Ohletz Olga , Del’Haye Pascal
Published: September 2024

We investigate mode splitting in silicon nitride microresonators that is induced by modulating the resonator sidewall with different amplitudes and modulation lengths. This offers important insights for microresonator dispersion engineering for photonic integrated circuits.
Optical Magnetometry based on Fluidic-Solid Composite WGM Microbubble Resonator
Authors: Zhao Xingyun , Duan Bing , Liu Chengnian , Gao Yongpan , Yang Daquan
Published: September 2024

We demonstrate an AC optical magnetometry based on fluid-solid composite whispering gallery mode microcavity filled with Terfenol-D particles and UV adhesive, achieving the sensitivity of
9.2nT/Hz at frequency of 2 MHz.
Thin-film ferroelectric material qualification for on-chip electro-optic applications
Authors: Vasudevan Anupama T , Vura Sandeep , Molleti Sri Harsha , Nukala Pavan , Raghavan Srinivasan , Selvaraja Shankar Kumar
Published: September 2024

We present a comprehensive insight into ferroelectric material development and characterisation required for next-generation electro-optic modulators. We show that simple material and electric characterisation of material polarisation is insufficient. Even electro-optic characteristics are subject to the nature of the ferroelectric material.
Hybrid InP-Si3N4 Tunable External Cavity Laser Achieving an Ultra-low Intrinsic Linewidth below 10 Hz
Authors: Wu Yilin , Shao Shuai , Yang Sigang , Chen Hongwei , Wang Hui , Chen Minghua
Published: September 2024

A hybrid InP-Si3N4 tunable external cavity laser is demonstrated. It achieves an ultra-low intrinsic linewidth below 10 Hz over the full C-band, featuring a record lowest value of 6.06 Hz.
Limits of Thermal Emission from Vertically Aligned Carbon Nanotubes Stimulated by a Nanosecond Pulsed Laser
Authors: Sarpong Emmanuel , Dave Arpit , Darden Kenan , Boreman Glenn D. , Lentz Joshua , Her Tsing-Hua
Published: September 2024

We show repetitive heating of carbon nanotubes at high laser fluence degrades the material due to oxidation. We also demonstrate laser heating of nanotubes in an oxygen-free atmosphere increases the degradation threshold fluence by 50%.
Strain-Modulated Exciton Recombination Probability in Semiconductor Nanocrystals
Authors: Hensel Daniel , Schmidt Daniel , Khosla Mallika , Brede Mariana , Hatami Fariba , Gaal Peter
Published: September 2024

Photoacoustic strain modifies the recombination probability of excitons in semiconductor nanocrystals via deformation potential coupling. Optical and X-Ray pump-probe schemes were used to characterize their mechanical response. The modulation of photoluminescence efficiency will be monitored by time-correlated single photon counting.
Ultrafast Coherent Raman Study of Lattice Vibration Dynamics in Wide-bandgap Semiconductors
Authors: Singhapurage Helani A.S. , Senarathna Dinusha M. , Sylvester Jeremy , Neupane Chandra P. , Ganikhanov F.
Published: September 2024

Optical phonon dynamics, including decay of symmetry forbidden modes, have been studied in technologically important wide-bandgap semiconductors. Phonon decay times for LO-and TO- phonon modes have been found to be within 0.82-1.56 ps and are explained in terms of parametric phonon interactions.
Optical Stark effects of attractive and repulsive Fermi polarons in charge-tunable monolayer WSe2 devices
Authors: Choi Hyojin , Kim Jinjae , Park Jiwon , Lee Yewon , Lee Jekwan , Watanabe Kenji , Taniguci Takashi , Jo Moon-Ho , Choi Hyunyong
Published: September 2024

We have investigated the ultrafast optical Stark effect of attractive and repulsive polarons. Surprisingly, doping-dependent results show that the shift of attractive polarons increases with increasing the carrier density, while that of repulsive polarons decreases.
Third-Order Harmonic Generation in Bulk Al2O3, Fe2O3, and Bi2Se3 Crystals
Authors: Tigges-Green I. , Mason M. , Fasano N. M. , Giakas A. , Dewan V. , Wang M. M. , Hejazi A. N. , Biswas S. , Bennett T. , Edwards M. R. , Karpowicz N. , Scholes G. D. , Mikhailova J. M.
Published: September 2024

We present the analysis of the third-order harmonic generation in bulk crystals driven by a near-IR laser in the reflection geometry. We compare the energies of the third-order harmonic generated by these crystals.
Excitonic Single- and Two-Photon Photoluminescence Excitations in Bilayer GaN/AlN Nanowires
Authors: Cui Liangqing , Wu You , Wu Yuanpeng , Mi Zetian , Kira Mackillo , Norris Theodore B.
Published: September 2024

The energy difference between the 1s and 2p exciton states of bilayer GaN/AlN is measured and computed by comparing excitonic resonances in photoluminescence excitation spectra following single- versus two-photon absorption.
Intervalley charge-carrier dynamics in type-II InAs/AlAs1-xSbx multiple quantum wells
Authors: Del Castillo Juan , Gyawali Sunil , Whiteside Vince R. , Mishima Tetsuya D. , Santos Michael B. , Sellers Ian R. , Bristow Alan D.
Published: September 2024

Photocarrier dynamics are measured in type-II MQW heterostructures for excitation that allows for relaxation through the L-valley. Both characteristic timescales of relaxation and the decay mechanisms are modified from those without intervalley scattering.
Resonance Nesting and Degeneracy of Bilayer Spherical Dielectric Cavities within Zero-index Materials
Authors: Wang Nuo , Ma Yun , Liu Qi , Tian Yu , Wang Yuye , Gong Qihuang , Gu Ying
Published: September 2024

We investigate the mode characteristic of bilayer spherical dielectric cavities embedded in ZIMs and find the resonance and mode degeneracy effect. Superior to monolayer cavities, the electric field distribution and mode degeneracy of bilayer cavities can be manipulated by changing the geometrical sizes.
Topologically Protected Asymmetric Mode Conversion in a Fiber with a Chiral Index and Gain Modulation
Authors: Zhou Huanyu , Chen Mingshu , Staliunas Kestutis , Galvanauskas Almantas
Published: September 2024

We show that asymmetric mode-coupling can be achieved in a fiber with a helical index-gain modulation, with conversion efficiency controlled by varying the separation between the unidirectional and the exceptional points in fiber parameter space.
Optical Power-Handling Capabilities of Active Phase-Change Metasurfaces
Authors: Braid George , de Galarreta Carlota Ruiz , Pady Joe , Comley Andrew , Bertolotti Jacopo , Wright C. David
Published: September 2024

Phase-change materials can deliver active metasurfaces, but it is not well-studied how these devices perform in high-power applications. We develop a model for optical performance changes induced by high-power lasers, applying it to two metasurface designs.
Strong Coupling and Resonance Splitting in Thickness-Dependent Epsilon-Near-Zero Metasurface with Au Nanodisk
Authors: Huang Chenxingyu , Fu H. Y. , Li Qian
Published: September 2024

The hybrid epsilon-near-zero/gold metasurface is investigated numerically. It is observed that the resonances induced by gold nanodisk and indium tin oxide film are strongly coupled, highly dependent on the thickness of epsilon-near-zero film.
A kernel-based framework for the estimation of the laser ablation area
Authors: Tai Yu-Chan , Gao Yin-Huan , Jiang Li-Yang , Lin Chun-Liang , Luo Chih-Wei
Published: September 2024

This paper reports an automated method for accurately estimating the area of laser ablation patterns in optical microscopy (OM) images. The proposed technique employs clustering analysis and Depth-First Search (DFS) algorithms to identify and quantify the ablation area. Polynomial shading correction compensates for shading effects caused by high-magnification objective lenses, enhancing image quality. The method overcomes challenges from nonlinear separability and suboptimal solutions in conventional clustering algorithms. This approach offers a more efficient and accurate automated ablation area recognition solution by leveraging computer-vision capabilities.
High-power Middle-infrared Laser Using W-shape Cavity and Cr2+:ZnS Crystal
Authors: Kang Jiqiang , Wei Jinge , Hu Guyue , Zhou Yi , Wong Kenneth K. Y.
Published: September 2024

A multiple longitudinal mode operation laser in a W-shape cavity using a Cr2+:ZnS crystal as the gain media is demonstrated. The emission has a ~100 nm spectrum centered at ~2280 nm and 400 mW power.
Unlocking Potential of Ultra-Short Laser Pulses for Development of Thin Film CuO for Electrode Fabrication
Authors: Khot Mayuresh , Kiani Amirkianoosh
Published: September 2024

A single-step fabrication technique was utilized for the fabrication of in-situ CuO thin film via picosecond laser pulses. This approach opens new avenues to explore for the fabrication of electrode for energy storage devices.
Convolution Network for Phase Unwrapping of Interferometric Fiber Sensing Signals
Authors: Duan Junyi , Chen Jiageng , Li Hanzhao , He Zuyuan
Published: September 2024

A convolution neural network is proposed to reconstruct the true value from phase-wrapped interferometric sensing signals. The MAE and RMSE in a real phase dataset sampled by DAS are 0.069 p and 0.352 p respectively.
A Hybrid FMCW LiDAR with Nonlinearity-Corrected VCSEL for 3D Imaging Beyond Coherence Length
Authors: Hao Yi , Zhu Qingyang , Han Yaqi , Wu Lican , Ye Ziming , Xia Annan , Chang-Hasnain Connie , Fu H. Y.
Published: September 2024

A novel hybrid FMCW LiDAR system for breaking laser coherence length limit is presented. The linearized frequency sweep of VCSEL and superior 3D imaging performance within and beyond coherence length are experimentally validated.
Spectroscopic Investigation of Nanosecond and Femtosecond Laser-Induced Plasma Emission for Remote Sensing Applications
Authors: Mohanta Antaryami , AlAmeri Reem , Matras Guillaume , Kasmi Chaouki
Published: September 2024

A comprehensive spectroscopic investigation of laser-induced plasma emission from aluminum, copper, steel, acrylic, white and black ABS is conducted, with a specific focus on both nanosecond and femtosecond laser pulses for remote sensing applications.
Modular Raman Microscopy for in-vivo Phenotyping of Nutrient Uptake in Plant Roots
Authors: Fernandez A. , Sen D. , Fang Z. , Henrich B. , Sokolov A.V. , Scully M.O. , Okumoto S. , Verhoef A.J.
Published: September 2024

We investigate plant nitrate uptake with a custom-built modular Raman microscope. This platform enables non-invasive tissue-specific nitrate concentration measurements in Arabidopsis roots, with a spatial resolution and dynamic range beyond the capabilities of alternative methods.
Sub-nanosecond MW microchip oscillator for Laser Tattoo Removal MOPA System
Authors: Catarina Marcus Vinicius , Bereczki Allan , Wetter Niklaus Ursus
Published: September 2024

We investigate a Q-switched Nd:YAG laser aimed to work as an oscillator in a MOPA system for laser tattoo removal. Pulses of 4.8 MW peak power with 680 ps pulses were obtained.
Analytical Study on Slow-Light Orbital Angular Momentum Beams in Vertical Photonic Crystal Waveguides for Gas Detection
Authors: Hlaing May , Jain Sourabh , Midkiff Jason , Fan Kang-Chieh , Chen Ray T
Published: September 2024

We introduce 2D hexagonal air-hole lattice vertical photonic crystal waveguides (VPCWs) to generate orbital angular momentum beams carrying the slow-light effect for on-chip gas sensing through photonic absorption spectroscopy.
High-speed 940 nm Ge-VCSEL with an Over 15 GHz Modulation Bandwidth at 85 °C
Authors: Yang Yun-Cheng , Wan Zeyu , Chiu Chih-Chuan , Chen Wei-Hsin , Hsu Guei-Ting , Feifel Markus , Lackner David , Xia Guangrui(Maggie) , Wu Chao-Hsin
Published: September 2024

This achievement marks a major milestone, establishing a dedicated pathway for epitaxy and fabrication of high-speed Ge-VCSELs. This technology offers extensive insights into epitaxial processes, advancing the field of VCSEL development.
Accurate Laser Model for Electrically Injected Monolithic GaAs on Silicon Nano-ridge Laser Diodes
Authors: Yimam Andualem Ali , Morthier Geert , Van Thourhout Dries
Published: September 2024

We present a semi-analytical model that explains the working principle behind electrically injected In0.2Ga0.8As/GaAs-on-silicon monolithic nano-ridge laser diodes. We show how the model can be used to study the spectral behavior and the threshold gain.
Bayesian Estimation of Frequency Noise in Narrow-Linewidth Lasers
Authors: Mertenskötter Lutz , Kantner Markus
Published: September 2024

We present a statistical inference approach to estimate the frequency noise power spectral density of narrow-linewidth lasers from delayed self-heterodyne beat note experiments in the presence of considerable measurement noise.
First Principles Calculation of Impact Ionization in Solids
Authors: Ahmed Sheikh Z. , Shahnewaz Shafat , Ganguly Samiran , Ghosh Avik W.
Published: September 2024

A theoretical calculation of impact ionization using quantum transport is pre-sented here. An atomistic matrix Hamiltonian in real space, capable of capturing complex mass tensors in heterostructures, is combined with Non-equilibrium Green’s functions using a self-consistent Born approximation for Coulomb interactions between electrons and holes.
Quantifying the Effects of Chemotherapy-Induced Toxicity and Knockout of the Transcription Factor c-Myc on Mice Kidney Metabolism Using Optical Imaging
Authors: Neghabi Mehrnoosh , Nategh Parisa , Ceyhan Busenur , Konjalwar Shalaka , Santana Aline G. , Machi Jaqueline F. , Rodrigues Claudia O. , Ranji Mahsa
Published: September 2024

The study explores knockout of c-Myc and doxorubicin toxicity influence on mouse kidney’s metabolism. Cryo-imaging unveils knockout is significantly more oxidized compared to control group while this was not observed between doxorubicin and saline group.
Biomimetic Transparent Nanoplasmonic Meshes for Bio-interfaced Spatiotemporal Multimodal SERS Bioanalysis
Authors: Garg Aditya , Zhou Wei
Published: September 2024

This study introduces biomimetic transparent nanoplasmonic microporous mesh (BTNMM) devices fabricated via reverse nanoimprint lithography. These devices offer spatiotemporal multimodal SERS measurements for bio-interfaced applications, enabling targeted pH sensing and molecular profiling of microbial biofilms.
FPGA Verification of Generalized LDPC Convolutional Codes with Hamming Code
Authors: Shi Yinlong , Tao Kai , Wei Zitao , Wang Jian
Published: September 2024

Employing FPGA emulations, we investigate the performance of the hybrid check generalized LDPC convolutional code, and reveal that a small proportion of generalized check nodes can not effectively decrease the error floor down to 10-15.
Design Aspects of Frequency-Domain Learned MIMO Volterra Equalisers
Authors: Castro Nelson , Boscolo Sonia , Ellis Andrew D. , Sygletos Stylianos
Published: September 2024

We numerically demonstrate a frequency-domain learned multiple-input multiple-output Volterra nonlinear equaliser and reveal the impact of practical implementation parameters on the per-channel performance.
Prior-free and inverse-free single photon single pixel imaging through thick scattering medium
Authors: Pan Long , Feng Xiaohua
Published: September 2024

By time gating and one-way light scattering characteristic of single pixel imaging, we demonstrate a prior-free and inverse diffusion equation-free single photon single pixel imaging through 60 mm thick scattering medium.
Realization of vortex ladder via pseudospin pumping in photonic graphene
Authors: Lei Sihong , Xia Shiqi , Song Daohong , Buljan Hrvoje , Chen Zhigang
Published: September 2024

We demonstrate an approach for ladder-type vortex generation in photonic graphene. This is achieved by exciting the ring spectrum of the Dirac cone, enabling pseudospin mode pumping and periodic singularity mapping to high-order topological charges.
Topologically protected vortex discrimination and transport
Authors: Hu Zhichan , Bongiovanni Domenico , Wang Ziteng , Wang Xiangdong , Song Daohong , Xu Jingjun , Morandotti Roberto , Buljan Hrvoje , Chen Zhigang
Published: September 2024

We demonstrate a universal principle for the realization of robust topological vortex guidance, showing clearly the advantage of using topological disclination for OAM-mode discrimination and transport as compared to a single waveguide.
Quadratic Optical Frequency Combs
Authors: Castrignano S. , Ricciardi I. , Hansson T. , Wabnitz S.
Published: September 2024

We overview theoretical approaches and experimental advances on temporal soliton and optical frequency comb generation in coherently driven, quadratic nonlinear optical cavities.
Nanostructured silica glass for mode locked fiber laser
Authors: Wang Yutian , Klimczak Mariusz , Krupa Katarzyna , Stepanenko Yuriy , Fu Songnian , Zhao Luming , Tang Ming , Buczynski Ryszard
Published: September 2024

Mode-locking operation is demonstrated in all-fiber laser incorporating a nanostructured Yb+Er co-doped silica SMF. The femtosecond pulses with 6nm bandwidth, 850fs pulse-width and high RF spectral purity of 80dB extinction ratio have been obtained.
Overcoming Pyroelectricity to Improve Integrated Superconducting Detector Fabrication Yield on Lithium Niobate
Authors: Biendl Johanna , Dreher Felix , Protte Maximilian , Höpker Jan Philipp , Verma Varun B. , Bartley Tim J.
Published: September 2024

When integrating superconducting detectors on lithium niobate, pyroelectricity can cause irreversible damage to the superconducting films. We investigate several schemes to overcome this issue including different detector designs, coatings and shorting schemes.
Wi-Fi Detection via Room-Temperature Rydberg Atoms
Authors: Nowosielski Jan , Jastrzebski Marcin , Halavach Pavel , Wasilewski Wojciech , Mazelanik Mateusz , Parniak Michal
Published: September 2024

We present a detection scheme for Wi-Fi signals using room-temperature Rydberg atoms. We compare the Rydberg-atoms sensor with its classical counterpart. Finally, we discuss the microwave-to-optical conversion of Wi-Fi signals using the wave mixing process.
Optical Fractional Fourier Transform in the time-frequency domain based on quantum-memory
Authors: Niewelt Bartosz , Jastrzebski Marcin , Kurzyna Stanisław , Nowosielski Jan , Wasilewski Wojciech , Mazelanik Mateusz , Parniak Michał
Published: September 2024

Operations in the time-frequency domain of light are widely used in communication. Transformations such as fractional Fourier transform are indispensable tool for noise reduction. We present a protocol for quantum memories to perform this operation.
LO-free microwave receiver based on Rydberg atoms and nonlinear interferometry
Authors: Mazelanik Mateusz , Borówka Sebastian , Parniak Michał
Published: September 2024

We propose a new optically-biased Rydberg-atoms detection of microwave fields, that allows truly all-optical operation, while retaining most of the sensitivity. We tackle the issue of laser phase noise, emerging in this type of detection, by facilitating separate measurement of this noise in a nonlinear process.
Classical Microwave Constellation to Quantum Optical Phase-space Mapping
Authors: Ghosh Niloy , Pendharker Sarang
Published: September 2024

Encoding quantum optical states with digitally modulated classical wireless microwave electric-field is shown for the first time. This paves the way for seamless integration of classical digital wireless links and quantum optical communication links in future.
Experimental reconstruction of the “push-and-pull” associated with damping and diffusion Wigner’s currents in quantum phase space
Authors: Chen Yi-Ru , Hsieh Hsien-Yi , Ning Jingyu , Wu Hsun-Chung , Chen Hua Li , Yang Popo , Steuernagel Ole , Wu Chien-Ming , Lee Ray-Kuang
Published: September 2024

We experimentally reconstruct Wigner’s current of quantum phase space dynamics for the first time, revealing the “push-and-pull” associated with damping and diffusion due to the environmental coupling of a squeezed vacuum state.
Correlated photon pairs generation with 3D integrated SiN circuit
Authors: Zhu Xiaotian , Wang Changyue , Little Brent E. , OU Z. Y. , Chu Sai T. , Liang Cui , Li Xiaoying
Published: September 2024

For the photon pairs generated from SiN waveguide, the measured heralding efficiency is 18%, coincidence-to-accidental ratio is up to 149, and photon-pair rate is up to 0.6 MHz under the pump power of 2.9 mW.
Spatial Chirp and Measurement Time in the Interference of Narrowband Sources
Authors: van der Veen Joscelyn , James Daniel
Published: September 2024

We reconcile the results of two papers on the interference of narrowband sources with a general equation that accounts for measurement time and spatial variations. This result can be applied to spatially chirped fields.
Multicolor Solitons with and without Phase-Locking
Authors: Widjaja Justin , Runge Antoine F. J. , de Sterke C. Martijn
Published: September 2024

We report the observation in a fiber laser of a new class of soliton comprised of multiple frequency components with the same group velocity but different propagation constants, which exhibit small periodic pulse-to-pulse energy variations.
Targeted Enhancement of Nonlinear Response in Layered Transition Metal Dichalcogenides
Authors: Berger Russell , Dimitrov Edgar , Mavian Alex , Rumman Nazifa , Bassène Pascal , Terrones Mauricio , N’Gom Moussa
Published: September 2024

We experimentally reveal and enhance weak second harmonic (SH) generation probed by a femtosecond pulse in monolayer WS2 polycrystals using a feedback based Wavefront Shaping (WFS) technique.
Universality of linear wave emission from perturbed solitons
Authors: Widjaja Justin , Qiang Y. Long , Skelton Amelie F. J. , Sweetland Lasse H. H. , Runge Antoine F. J. , Lustri Christopher J. , de Sterke C. Martijn
Published: September 2024

We report experimental time- and phase-resolved measurements of pure-quartic solitons radiating dispersive waves in the presence of weak positive sixth-order dispersion. These results imply that a universal radiation mechanism exists across all of wave physics.
Photon-Dressed Exciton States and Terahertz Gain unveiled by THz Spectroscopy
Authors: Anders D. , Stein M. , Chatterjee S.
Published: September 2024

We investigate a GaAs multi quantum well structure with ultra fast optical pump-terahertz probe spectroscopy. Exciting the sample energetically below the 1s exciton resonance leads photon-dressed exciton states.
Angular Deflection and Frequency Translation Near the Critical Angle in Finite Time-Varying Media
Authors: Fruhling Colton , Ozlu Mustafa Goksu , Boltasseva Alexandra , Shalaev Vladimir M.
Published: September 2024

We study time refraction and angular deflection in finite dynamic media. We find the effect is maximized at the critical angle. Its ultrafast nature suggests an attosecond streak camera as an application.
Generation of 1.2 GHz, 40 fs pulses directly from a mode locked Yb:fiber laser
Authors: Wang Ya , Yang Ruoao , Chen Zhendong , Pan Duo , Luo Bin , Zhang Zhigang , Chen Jingbiao
Published: September 2024

We demonstrated generation of 40 fs pulses from a 1.2 GHz repetition rate Yb:fiber laser at an average power up to 1.3 W.
Sub-100-fs SESAM mode-locked Yb:YSr3(PO4)3 laser
Authors: Li Zhi-Qiang , Lin Zhang-Lang , Zeng Huang-Jun , Nie Hai-Yu , Zhang Ge , Wu Guangda , Yu Fapeng , Zhao Xian , Loiko Pavel , Mateos Xavier , Liang Hsing-Chih , Petrov Valentin , Chen Weidong
Published: September 2024

We report on a diode-pumped SESAM mode-locked Yb:YSr3(PO4)3 laser generating soliton pulses as short as 61 fs at 1062.7 nm with an average power of 38 mW at ~66.7 MHz.
Multi-band Chirped Mirror Design for Highly Dispersive Optical Systems
Authors: Chia Shih-Hsuan , Li Yan-Cheng , Sun Chi-Kuang , Kärtner Franz X.
Published: September 2024

We present multi-band chirped mirror pairs, adept at managing group delay variations within and across bands. These designs outperform ultra-broadband mirrors, offering enhanced dispersion control and facilitating precision in nonlinear microscopy applications.
Short-Pulse Generation from Active Mode Locking with RF Frequency Comb
Authors: Varsha D. Pavitra , C N Siva Subramaniyam , Srinivasan Balaji , Venkitesh Deepa
Published: September 2024

We demonstrate superior performance of active harmonic mode locked laser driven with RF frequency comb in terms of shorter pulse width, better phase noise, side mode suppression and timing jitter compared to single RF tone.
Beam cleaning in a graded-index ring-core multimode fiber
Authors: Xu Bohao , Zhang Hu , Wang Jiaqi , Xiao Xiaosheng , Xi Lixia , Zhang Xiaoguang
Published: September 2024

We demonstrate beam cleaning of picosecond pulses in a graded-index ring-core multimode fiber with a high fundamental mode content more than 50%, accompanied by Raman sideband generation.
Large-mode area, single-mode, and normal dispersion solid-core anti-resonant fiber design for high power applications at 2 µm
Authors: Habib Md Selim , Sufian Md Abu , Mahfuz Mohammad Al , Correa Rodrigo A. , Schülzgen Axel
Published: September 2024

In this study, we explore the applicability of negative curvature anti-resonant solid-core large mode area fibers to achieve single-mode, normal dispersion (–7.5 ps/nm/km) and minimal propagation losses at the 2 µm wavelength.
Stable Dual Vector Soliton Generation in a Single Cavity
Authors: Cuevas Alberto Rodriguez , Stoliarov Dmitrii , Kudelin Igor , Sergeyev Sergey
Published: September 2024

Portable ring-cavity fiber laser producing two orthogonally polarized vector solitons stable over 125 hours, with minimal frequency drift (0.0002319 Hz/s) and low SSB phase noise (-95 dBc/Hz at 100Hz offset), showcasing potential for dual-comb ranging.
Normal Dispersion Anti-resonant Fiber Design at 2 µm for High Power Applications: A Genetic Algorithm Approach
Authors: Sufian Md Abu , Mahfuz Mohammad Al , Hu Xiaowen , Alhalemi Ameen , Habib Md Selim , Schülzgen Axel
Published: September 2024

We report the applicability of all-solid anti-resonant large mode area silica fibers to attain single-mode and normal dispersion at the 2 µm wavelength. The design parameters are optimized using the genetic algorithm methodology.
A fan-in fan-out device for seven-core ten-mode fiber based on commercial multi-mode fiber tapering
Authors: Hua Xuchen , Zheng Gao , Du Haoze , Zhu Zheng , Tan Boyu , Tang Ming
Published: September 2024

We designed, simulated and fabricated a fan-in fan-out device for 7-core 10-mode fiber, which was conveniently fabricated with commercial multi-mode fiber utilizing fused tapered techniques with a mode insertion loss no more than 2.57 dB.
Quantum Pulse Position Modulation using Entangled States for Communication Security
Authors: Rezaei Tahereh , Vadlamani Chitra , Kalev Amir , Habif Jonathan L.
Published: September 2024

Introducing Quantum Pulse Position Modulation (QPPM): an entanglement-based, secure pulse position modulation approach using two-mode entangled light and ther-mal noise for stealthy data transmission. Quantum bounds ensure secure symbol decoding, baffling eavesdroppers.
Nonresonant Nonlinear Optics of Semiconductors Pumped with Ultrafast Long-wave Infrared Laser Pulses
Authors: Matteo Daniel , Tochitsky Sergei , Joshi Chan
Published: September 2024

The nonlinear refractive index and nonlinear absorption are measured in GaAs, n-Ge, ZnSe, and Te at 10µm with intensities up to 10GW/cm2 using various methods. Mid-IR femtosecond semiconductor switching is also studied in these materials.
Satellite radio detection via dual-microwave Rydberg spectroscopy
Authors: Hill Joshua C. , Elgee Peter K. , LeBlanc Kermit-James E. , Ko Gabriel D. , Kunz Paul D. , Cox Kevin C. , Meyer David H.
Published: September 2024

We present a resonant Rydberg electric field s ensor o perating i n t he UHF band using a dual-optical-dual-microwave spectroscopy scheme. We measure Sirius XM satellite radio, and compare the sensitivity to other contemporary implementations of the technology.
Multimodal spectroscopic and imaging methods for skin diagnostics
Authors: Kukk Anatoly Fedorov , Wu Di , Panzer Rüdiger , Emmert Steffen , Roth Bernhard
Published: September 2024

Skin cancer poses challenges in early detection. We aim for an optical biopsy as alternative to invasive procedures by combining spectroscopic and imaging techniques, showing the potential for improved diagnostics and broader applications in future.
Nonlinear Optics of Graphene and Other Post-2000 Materials
Authors: Vermeulen Nathalie
Published: September 2024

Since 2000 various new nonlinear-optical materials have emerged, including 2D materials such as graphene. After highlighting graphene’s nonlinear response at optical and THz frequencies, I will briefly discuss a new data table for post-2000 nonlinear-optical materials.
Continuous Variables Cluster States in Photonic Time-Crystals
Authors: Lyubarov M. , Birk M. , Segal O. , Horlach A. , Nemirovsky-Levy L. , Plotnik Y. , Segev M.
Published: September 2024

We show that Photonic Time-Crystals (PTCs) produce two-mode squeezing for pairs of photonic modes. We propose an algorithm for generating a cluster state in PTC for a measurement-based quantum computing in a simple three-step process.
Towards All-optical Cavity-based Memory for Non-Gaussian Quantum State Engineering
Authors: Hanamura Fumiya , Takase Kan , Hirota Kazuki , Nehra Rajveer , Lang Florian , Miki Shigehito , Terai Hirotaka , Yabuno Masahiro , China Fumihiro , Kahiwazaki Takahiro , Inoue Asuka , Umeki Takeshi , Asavanant Warit , Endo Mamoru , Yoshikawa Jun-ichi , Furusawa Akira
Published: September 2024

We present our experimental results on all-optical memory to store and manipulate quantum states, and propose resource-efficient time-domain-multiplexed state engineering using the memory. This paves a path to scalable quantum information processors.
Inhibited Spontaneous Emission Using Synthetic Dimensions
Authors: Konforty Noa , Lustig Eran , Segev Mordechai
Published: September 2024

We show how a synthetic SSH lattice structure can inhibit the spontaneous emission of photons by a quantum emitter. Opening doors to optical approach to switching spontaneous emission on and off.
Driven-dissipative phases and dynamics in non-Markovian nonlinear photonics
Authors: Sloan Jamison , Rivera Nicholas , Soljačić Marin
Published: September 2024

We introduce a novel class of driven-dissipative nonlinear optical systems with non-Markovian cavity coupling, which can enable low-threshold nonlinear effects, self-pulsing at THz frequencies, and highly squeezed stable cavity states including high-order Fock states.
Nano-electromechanically Tunable Dielectric Metasurfaces for Reconfigurable Beam Steering
Authors: Baspinar A. Bilgehan , Zheng Tianzhe , Kwon Hyounghan , Faraon Andrei
Published: September 2024

We present a reconfigurable nanoelectromechanical metasurface design based on slot modes at telecom wavelength that can achieve 80% amplitude and 250 degrees phase modulation, and therefore beam steering reaching 60% efficiency with ~10V actuation.
Chiral phonon-induced magnetization in cerium fluorides
Authors: Luo Jiaming , Lin Tong , Zhang Junjie , Chen Xiaotong , Blackert Elizabeth R. , Xu Rui , Yakobson Boris I. , Zhu Hanyu
Published: September 2024

We report that circularly polarized terahertz light pulses can drive chiral phonons, which then induce an effective quasi-static magnetic field on the order of 1 tesla to polarize the paramagnetic cerium fluoride.
Observation of Ultrafast Coherent Acoustic Vibrations in 2D Antimonene/MoS and Quantification of the Weak Van der Waals Coupling
Authors: Yang Zih-Sian , Chang Che-Jia , Wang Peng-Jui , Lin Shih-Yen , Sun Chi-Kuang
Published: September 2024

Here we report the observation of ultrafast coherent acoustic vibrations in antimonene/MoS2 2D van der Waals (vdW) heterostructures. The vdW coupling between antimonene/MoS2 layers was successfully quantified through analyzing the observed thickness dependent vibrational frequencies.
Polarization-Entangled Photon-Pair Sources Based on 3R-MoS2
Authors: Weissflog Maximilian A. , Fedotova Anna , Tang Yilin , Santos Elkin A. , Laudert Benjamin , Shinde Saniya , Abtahi Fatemeh , Afsharnia Mina , Pérez Inmaculada Pérez , Ritter Sebastian , Qin Hao , Janousek Jiri , Shradha Sai , Staude Isabelle , Saravi Sina , Pertsch Thomas , Setzpfandt Frank , Lu Yuerui , Eilenberger Falk
Published: September 2024

We demonstrate for the first time generation of polarization-entangled photon-pairs in a transition metal dichalcogenide. Using 3R-phase molybdenum disulfide, we experimentally show tunable, high-fidelity generation of different polarization Bell states.
High-Efficiency Nanophotonic Entangled Pair Production at Visible and Near-IR Wavelengths
Authors: Harper Nathan A. , Hwang Emily Y. , Sekine Ryoto , Ledezma Luis , Perez Christian , Marandi Alireza , Cushing Scott K.
Published: September 2024

We demonstrate nanophotonic visible and near-IR entangled photon pair production via periodically poled thin-film lithium niobate waveguides. Pairs spanning 720-900 nm are generated from 405-406.4 nm pump wavelengths with per-photon efficiencies approaching 10
−
4.
Interferometric extraction of orbital angular momenta of two-component vortex beams
Authors: Setareh Maryam , de Gille Robert , Kim Sejeong , Crozier Kenneth B.
Published: September 2024

Beams comprising the superposition of vortex beams with different orbital angular momenta (OAM) exhibit rich physics. We extract the OAMs of two-component vortex beams using interference pattern and intensity profiles.
Fast-light edge states in valley photonic crystal waveguides with glide and time reversal symmetry
Authors: Uemura Takahiro , Yoda Taiki , Moritake Yuto , Otsuka Shutaro , Takata Kenta , Notomi Masaya
Published: September 2024

Our proposal utilizes glide and time-reversal symmetric photonic crystal waveguides to achieve anomalous mode dispersion. We also theoretically demonstrate the way to restore fast-light edge states even in gain- or loss-biased scenarios.
Broadband Measurement of Feibelman d-parameters
Authors: Chen Zeling , Yang Shu , Xie Zetao , Hu Jinbing , Xia Yipu , Shen Yonggen , Su Huirong , Xie Maohai , Christensen Thomas , Yang Yi
Published: September 2024

We introduce a general broadband ellipsometric method to measure the quantum optical surface response functions known as Feibelman d-parameters, and demonstrate it using a gold–air interface in the visible–ultraviolet regimes under ambient conditions.
Enhancement of non-classical radiation from quantum dots embedded within semiconductor Huygens’ metasurfaces
Authors: Iyer Prasad P , Prescott Samuel , Addamane Sadhvikas , Jung Hyunseung , Henshaw Jacob , Mounce Andrew , Luk Ting S , Mitrofanov Oleg , Brener Igal
Published: September 2024

We demonstrate position and size independent, order of magnitude increase in the collection efficiency and emission lifetime control of anti-bunched photons from local-droplet epitaxial GaAs quantum dots embedded within resonant semiconductor (Al0.4Ga0.6As) Huygens’ metasurfaces.
Spatially Ordered and Spectrally Uniform Quantum Dot Single Photon Sources in Large Arrays for Quantum Optical Circuits
Authors: Huang Qi , Jordao Lucas , Lu Siyuan , Chattaraj Swarnabha , Zhang Jiefei , Madhukar Anupam
Published: September 2024

Mesa-top single quantum dots (MTSQDs) show promise as suitable single photon sources for realizing multi-source scalable quantum optical circuits. Here, large area uniformity and correlated optical and structural characteristics of these quantum dots are discussed.
The minimum-error quantum estimation with multi-projector measurements
Authors: Bielak Martin , Koutný Dominik , Neset Michal , Ježek Miroslav
Published: September 2024

Full quantum state characterization requires a tomographic procedure performed on a limited number of copies. Our experimental demonstration of one- and two-qubit overcomplete tomographic measurements (up to 400 separable projections) outperforms state-of-the-art approaches, showcasing significant error reduction.
Entanglement-induced collective many-body interference
Authors: Faleo T. , Brunner E. , Webb J. W. , Pickston A. , Ho J. , Weihs G. , Buchleitner A. , Dittel C. , Dufour G. , Fedrizzi A. , Keil R.
Published: September 2024

We introduce a novel quantum phenomenon combining entanglement and many-body interference, enabling the observation of N-particle interference while suppressing lower-order interferences. A four-photon experiment demonstrates high-visibility (nonlocal) interference patterns based on a collective four-particle phase.
Experimental observation of space time surface plasmon polariton wave packet
Authors: Ichiji Naoki , Kikuchi Hibiki , Yessenov Murat , Schepler Kenneth L. , Abouraddy Ayman F. , Kubo Atsushi
Published: September 2024

Femtosecond space-time surface plasmon polariton wave packets, localized in all dimensions and exhibiting diffraction-free properties, have been excited on a Ag surface and their spatial fields are microscopically imaged with femtosecond time resolution.
Attosecond electron microscopy using free-electron homodyne detection
Authors: Gaida John H. , Lourenço-Martins Hugo , Sivis Murat , Rittmann Thomas , Feist Armin , de Abajo F. Javier García , Ropers Claus
Published: September 2024

We implement attosecond electron microscopy in a TEM to measure the optical near-field of a plasmonic nanoprism with 54 as (FWHM) temporal and few-nm spatial resolution, demonstrating free-electron homodyne detection.
Optical studies of silicon color centers and CC-LEDs for consideration as telecom quantum light sources
Authors: Ebadollahi Nikki , Namboodiri Pradeep N. , Kizhake Vijin V. , Davanco Marcelo I. , Srinivasan Kartik A. , Katzenmeyer Aaron M. , Pelton Matthew , Pomeroy Joshua M.
Published: September 2024

We synthesized and studied color centers on silicon-on-insulator wafers with photoluminescence mapping and spectroscopy, and fabricated silicon W- and G- color center LEDs towards electrically-pumped single photon sources.
Quantum interferometry with x-rays
Authors: Klein Y. , Strizhevsky E. , Aknin H. , Deutsch M. , Cohen E. , Peer A. , Tamasaku K. , Schulli T. , Karimi E. , Shwartz S.
Published: September 2024

We demonstrate the pioneering use of a quantum interferometer with x-rays, highlighting its effectiveness in precisely measuring the phase accumulated in opaque media. Our work uncovers novel opportunities for measuring sub-Angstrom optical-path differences.
Electron microscopy of quantum light dynamics in cavities and waveguides
Authors: Gorlach Alexey , Malka Solomon , Ruimy Ron , Tziperman Offek , Karnieli Aviv , Kaminer Ido
Published: September 2024

We show how modulated free-electron wavepackets can extract the ultrafast dynamics of arbitrary quantum light states in nanophotonic resonators and waveguides, capturing decoherence and other interactions.
Extreme Ultraviolet Reflection Spectroscopy on Lanthanides and Actinides with a Table-top HHG Light Source
Authors: Skrodzki P. J. , Padmanabhan P. , Livshits M. Y. , Elverson F. , Gates C. , Greer S. M. , Stein B. , Chen A. , Ward J. , Carpenter M. , Bowlan P.
Published: September 2024

A high harmonic generation light source enables a table-top apparatus for the measurement of electronic structure in lanthanide- and actinide-series compounds, which we demonstrate by measuring O- and N-edge transitions in several materials.
Quantum Non-linear Optics with a Diamond Tin-Vacancy Center in a Fiber-based Microcavity
Authors: Herrmann Yanik , Fischer Julius , Brevoord Julia M. , Sauerzapf Colin , Wienhoven Leonardo G. C. , Feije Laurens J. , Pasini Matteo , Eschen Martin , Ruf Maximilian , Weaver Matthew J. , Hanson Ronald
Published: September 2024

We demonstrate coherent coupling of a single diamond Tin-Vacancy center to a fiber-based microcavity, showing a cavity transmission dip of 50 % on resonance, and altered photon statistics in cavity transmission.
Improving the Optical Coherence of Diamond Tin-Vacancy Centers by Heralded Initialization
Authors: Brevoord Julia M. , De Santis Lorenzo , Yamamoto Takashi , Pasini Matteo , Codreanu Nina , Turan Tim , Beukers Hans K.C. , Waas Christopher , Hanson Ronald
Published: September 2024

We demonstrate heralded initialization of charge state and optical transition frequency of diamond tin-vacancy centers, using (off-)resonant lasers, photon detection and real-time logic. Using this, we show frequency tunability > 100 MHz and strongly improved optical coherence.
Free-Space Ultrahigh-Q Mode Resonances at Visible Wavelength with an Etch-Free Metasurface
Authors: Fang Jie , Chen Rui , Sharp David , Munley Christopher , Majumdar Arka
Published: September 2024

We experimentally demonstrate a free-space resonance quality (Q) factor of 2.09×104 at 778 nm wavelength with an etch-free metasurface. The guided-mode-resonance nature is studied via energy-momentum spectroscopy, showing the full-visible-spectrum accessibility of our ultrahigh-Q resonances.
Broadband, high-efficiency metasurfaces using dispersion-engineered nanostructures
Authors: Chen Wei Ting , Park Joon-Suh , Marchioni Justin , Millay Sophia , Yousef Kerolos M. A. , Capasso Federico
Published: September 2024

A set of nanostructures capable of creating high-efficiency, broadband metasurfaces for visible wavelengths is presented. Utilizing structure-induced dispersion engineering, we show that anisotropic-shaped nanostructures are effective building blocks for crafting broadband, polarization-insensitive, and efficient metasurfaces.[1]
Experimental realization of optical cat states by photon-addition
Authors: Chen Yi-Ru , Hsieh Hsien-Yi , Ning Jingyu , Wu Hsun-Chung , Chen Hua Li , Shi Zi-Hao , Yang Popo , Steuernagel Ole , Wu Chien-Ming , Lee Ray-Kuang
Published: September 2024

We added (heralded) single photons to squeezed vacuum states creating approximate optical ‘cat states’ at rates exceeding 2.3 × 105 per second; at least one order of magnitude higher than all previously reported realizations.
Strict Verification of Multiple Indefinite Causal Orders on a Programmable Silicon-Photonic Quantum Chip
Authors: Deng Yahohao , Wang Jianwei
Published: September 2024

We report strict verification of multiple types of indefinite causal orders and demonstrate distillation of indefinite causal order utilizing a programmable silicon-photonic quantum chip. This experimental implementation contributes to the development of a resource theory for indefinite causal order.
MEMS-based metasurfaces for a dynamic OAM-Gaussian switching fiber laser
Authors: Wang Chuanshuo , Meng Chao , Mei Xianglong , Gui Lili , Thrane Paul C. V. , Ding Fei , Bozhevolnyi Sergey I. , Xu Kun
Published: September 2024

We introduce a dynamic fiber laser with an intracavity electrically-driven MEMS metasurface for efficient and rapid switching between complex vortex and simple Gaussian beam modes at 1030 nm wavelength.
Integrated plasmonic gradient metasurfaces for directional photodetection
Authors: Liu Jianing , Paiella Roberto
Published: September 2024

We demonstrate the use of plasmonic gradient metasurfaces to tailor the angular response of generic planar photodetectors. The resulting devices are promising for a wide range of computational imaging applications with enhanced miniaturization and functionality.
Optimal quantum multi-parameter estimation with few-photon states
Authors: Ferretti Hugo , Dobney C. Pria , Yilmaz Y. Batuhan , Bonsma-Fisher Kent , Goldberg Aaron Z. , Lupu-Gladstein Noah , Pang Arthur O. T. , Steinberg Aephraim M.
Published: September 2024

We report on the experimental demonstration and characterisation of the “tetrahedron state”, the optimal four-photon state for simultaneous estimation of all parameters describing a rotation. We propose a follow-up experiment to create the optimal two-photon state for this task.
Tomography of a Frequency-Bin Qubit
Authors: Oliver Richard , Raghunathan Sidarth , Chiu Hoi Chun , Binai-Motlagh Ali , Gaeta Alexander L.
Published: September 2024

Using Bragg-scattering four-wave mixing, we prepare frequency-bin qubits and measure a purity of 0.92 through a lossy channel, suggesting viability for quantum networks using existing telecommunications infrastructure. Such a frequency-bin qubit obviates the polarization-compensation requirement of polarization qubits.
The Pure-quartic Bragg Soliton
Authors: Choi Ju Won , Sohn Byoung-Uk , Sahin Ezgi , Chen George F. R. , Xing Peng , Ng Doris K. T. , Eggleton Benjamin J. , Tan Dawn T. H.
Published: September 2024

We report a new class of Bragg soliton, the pure-quartic Bragg soliton, which arises from the balance between self-phase modulation and the extraordinarily strong negative fourth-order dispersion induced by integrated Bragg gratings.
Electrical Tuning of Four-Wave Mixing in Nonlinear Metasurfaces
Authors: Feinstein Matthew D. , Adronikides Alexander , Almeida Euclides
Published: September 2024

We demonstrate a broadband, electrically tunable nonlinear metasurface utilizing hybrid gold-graphene plasmons. The metasurface device converts electromagnetic radiation from mid-infrared to visible through four-wave mixing, and the conversion can be electrically modulated more than graphene.
Photonic Device Designs Assisted by Reinforcement Learning
Authors: Wang Zi , Song Junyeob , Koksal Okan , Chen Lu , Agrawal Amit , Zhu Wenqi
Published: September 2024

We use reinforcement learning algorithms to design a variety of photonic devices that can be used for miniaturized atomic systems. Such algorithms generate high efficiency photonic devices without the requirement of a training dataset.
Non-Hermitian swallowtail degeneracy in the two-mode squeezing of light
Authors: Blinova Polina , Moiseev Evgeny , Wang Kai
Published: September 2024

We show that swallowtail catastrophe consisting of various-order non-Hermitian degeneracies naturally exists in the dynamics of two-mode quadrature squeezing systems with asymmetric losses that break pseudo-Hermiciticy and propose a practical experimental setup.
Single-photon optical modulation at room temperature enabled by an electron avalanche in a photodiode
Authors: Sychev Demid V. , Chen Peigang , Yang Morris , Fruhling Colton , Lagutchev Alexei , Kildishev Alexander V. , Boltasseva Alexandra , Shalaev Vladimir M.
Published: September 2024

We show all-optical modulation of a 1550-nm wavelength beam with a power of around 10mW controlled by a single-photon intensity signal in an avalanche photodiode.