bluuebunny/crossref_metadata_2025 huggingface dataset:
A Comparison Between Brain Vitalization Gymnastics and Elderly Gymnastics to Improving Cognitive Function Among Elderly
Authors: Dwiantari I Gusti Ayu , Laksmidewi Anak Agung Ayu Putri , Adnyana I Made Oka , Widyadharma I Putu Eka
Published: January 2021

Objective: Two of the most frequently elderly's health-associated problems are balanced disorder and cognitive decline. One of the solutions to prevent cognitive decline in the elderly is via performing brain vitalization gymnastics. According to these facts and arguments, the authors were interested in studying the effects of brain vitalization gymnastics performed twice every week for four weeks upon cognitive function in the elderly. Methods: This was a randomized pretest-posttest control group design study involving 38 elderly subjects who were registered in the geriatric subgroup of West Denpasar primary health care clinic. The subjects were equally divided into two groups, i.e., those who performed brain vitalization gymnastics and elderly gymnastics. Montreal Cognitive Assessment Indonesian Version(MoCA-Ina) score as tested with paired t-test among brain vitalization gymnastics and elderly gymnastics groups. Results: both groups before and after the exercise increased by 1.53 and 0.11 points, respectively. Furthermore, the brain vitalization gymnastics group had a statistically significant higher MoCA-Ina score as opposed to the elderly gymnastics group (p=0.047). Conclusion: This study had shown that brain vitalization gymnastics was more effective in increasing elderly's MoCA-Ina score as opposed to elderly gymnastics.
The Effectiveness of Curcuma Longa Drinking Decreasing the Intensity of Dysmenorrhea
Authors: Utami Rahayu Budi , Damayanti Dini Firti , Rodiah Dina
Published: January 2021

Dysmenorrhea is a disease that is experienced by almost all women in the world. One cause of dysmenorrhea is related to menstruation in the absence of unidentified organic pathologists. The study tested the use of Curcuma longa drinks to reduce the pain of dysmenorrhea by comparing the home industry and researched concoctions. The method uses experiments with pre-test and post-test research designs. Research subjects are youthful women aged 15-18 years and will support this research project. The subject was 32 students who lived in the dormitory in the Pontianak. The results showed a significant difference in the administration of Curcuma longa drinks to the reduction of dysmenorrhea pain in adolescent girls (p ≤ 0.001).
Evaluation of Wound Healing Activity of an Ethanolic Extract of Anacardiumoccidentale Leaves in Wistar Rats
Authors: Kumari K Meena , Vittalrao Amberkar Mohanbabu , Kumar SE Praveen , Prabhath Sushma , Charitha Charitha
Published: January 2021

BACKGROUND -This study undertaken to screen a potential wound healing activity of an ethanolic extract of Anacardiumoccidentale(Ao)leaves in Wistar rats. MATERIALS AND METHODS-Excision wound of 500mm2created on the back of Wistar rats. A total of thirty adult Wistar rats were prescreened and divided into five groups of six rats each.Group I and II rats were treated by normal saline (control) and povidone-iodine (standard drug), respectively. Group III and IV with 0.5% and 2%of Anacardiumoccidentale ointment (test drugs), respectively, and Group V rats treated with anti-wound healer drug dexamethasone, i.m. + 2% Anacardiumoccidentale. All drugs were applied topically except Inj. dexamethasone. In the model of excision wound, the wound healing effect was determined by parameters such as the percentage of wound contraction, duration of epithelialization, and histopathological examination. RESULT-All drugs, povidone-iodine, 0.5%, and 2% of the Ao ointment treated group of rats showed a statistically significant increase (P<0.05) in the % of wound contraction on 5th and 6thdays Vs.Control rats. In contrast,povidone-iodine, 2% Ao ointment and (dexamethasone + 2% Ao)treated rats decreased the period of epithelialization which was statistically significant (P<0.05) compared to the control.However, the standard povidone-iodine treated rats showed a maximum increase in the percentage of wound contraction and minimum period of epithelialization, followed by a higher dose of 2% Ao extract. The plant extract 0.5% and 2% of Ao showeda significant increase inthe rate of wound contraction as compared to the standard drug povidone-iodine also. The combination of (2%Aoextract+dexamethasone) drug-treated rats decreased the rate of wound contraction on 5th, 9th days; whereas, povidone-iodine increased on all days, i.e., 5th, 9th, 13th and 17th days,which was statistically significant (p<0.05) Vs.Normal saline. The povidone and 2% of Ao extract hastened the rate of wound healing activity, which was evident by maximum re-epithelialization and presence of the collagen fibers. CONCLUSION-In our study, the topical application of Anacardiumoccidentale leaf extract has shown promising wound healing activity; however, it failed to reverse the anti-wound healing property of steroids.
Evaluating the Role of Punica Granatum and Rosuvastatin in an Experimental Model of Alzheimer’s Disease
Authors: Fatima Fariha , Qadeer Fardan , Abidi Afroz , Rizvi Dilshad Ali
Published: January 2021

Alzheimer’s disease is associated with progressive neurological and cognitive decline and is the commonest cause of dementia in 70% population globally. Several natural and synthetic agents are incessantly being explored as potential therapeutic targets for disease modification and treatment to reduce the suffering of the patients as well as to alleviate the huge financial burden on the healthcare system. Punica granatum contains polyphenols and flavonoids which are reported to offer neuroprotection. Statins on the other hand, serve as potent cholesterol lowering agents which target the pathophysiology of the disease. Twenty-four male wistar rats were divided into 4 groups of six rats each. They were fed high fat diet for two months.The rats in the respective groups were given Punica granatum juice, Rosuvastatin, standard treatment comprising of Donepezil and distilled water. The analysis was done at baseline and at the end of the study. Behavioral tests and histopathological analysis depicted marked improvement in cognitive and memory functions in Punica granatum group. Rosuvastatin group however showed improvement which was not as pronounced as achieved by the Punica granatum group. The present study was done to discern the effects of test agents such as Punica granatum and Rosuvastatin in memory deficits associated with Alzheimer’s disease. Marked improvement in dementia was observed in Punica granatum juice group in the High Fat Diet induced model of Alzheimer’s disease. Hence, Punica granatum offers significant neuroprotection as compared to the Rosuvastatin group and its potential can be explored in further studies to consolidate its role in amelioration of the disease progress and its treatment.
High-order Harmonic Generation in Microfluidic Femtosecond Laser Micromachined Devices for Ultrafast X-ray Spectroscopy
Authors: Ciriolo A. G. , Vázquez R. Martínez , Crippa G. , Tosa V. , Frezzotti A. , Faccialà D. , Devetta M. , Osellame R. , Vozzi C. , Stagira S.
Published: January 2021

We report efficient high harmonic generation and control in glass chips fabricated by femtosecond laser micromachining. This work paves the way for the implementation of microfluidic HHG beamlines for X-ray spectroscopy with attosecond resolution.
Acceleration of quasi mono-energetic electron bunches to ~15MeV using <3mJ energy few-cycle laser pulses
Authors: Salehi F. , Le M. , Railing L. , Pascale L. , Milchberg H. M.
Published: January 2021

We demonstrate acceleration of quasi mono-energetic electron bunches up to ~15 MeV at 1kHz repetition rate with > pC charge per bunch while using <3mJ laser pulse energy.
Two Color High-Order Harmonic Generation from Solids Combining Mid-Infrared and Terahertz Pulses
Authors: Li Sha , Tang Yaguo , Ortmann Lisa , Talbert Bradford K. , Wang Zhou , Cheng Yang , Yang Fengyuan , Landsman Alexandra S. , Agostini Pierre , DiMauro Louis F.
Published: January 2021

In this work, we present our novel approach to explore high-order harmonic generation from solids by introducing a two-color scheme that combines an 80 fs, 3.6 µm mid-infrared driving field with a 2 ps, 600 µm single-cycle terahertz dressing field.
Finding the right modes for communicating with optics
Authors: Miller David A. B.
Published: January 2021

We show a simple and rigorous way of finding the strongest and lowest cross-talk channels for communicating with optics. This approach leads to several practical and fundamental results in classical and quantum optics.
Toward Generation of Orbital-Angular-Momentum-Entangled Photon Pairs in a Few-Mode Fiber
Authors: Shamsshooli Afshin , Guo Cheng , Parmigiani Francesca , Li Xiaoying , Vasilyev Michael
Published: January 2021

We describe a novel scheme for generation of orbital-angular-momentum-entangled photons in a few-mode fiber. We experimentally verify the underlying inter-modal parametric processes with two-mode classical signal input, observing high mode purity of the generated idler.
Integrated Plasmonic Terahertz Field Detector
Authors: Salamin Yannick , Benea-Chelmus Ileana-Cristina , Fedoryshyn Yuriy , Settembrini Francesca F. , Heni Wolfgang , Elder Delwin L. , Dalton Larry R. , Faist Jérôme , Leuthold Juerg
Published: January 2021

We present a compact and silicon compatible THz field detector platform. An optimum nonlinear interaction of the infrared and THz modes in a plasmonic waveguide-cavity enables a broadband and highly efficient detection.
Tuning the Optical Properties of Er3+ and Eu3+ ions in Phosphate Glass by the Thermally-Induced Gold Nanoparticles
Authors: Shakhgildyan Georgiy Yu. , Sigaev Vladimir N.
Published: January 2021

Thermally-induced precipitation of Au plasmonic nanoparticles in phosphate glasses quench Er3+ and Eu3+ ions luminescence intensity. The formation of pre-plasmonic Au nanoparticles leads to the increase of luminescence intensity through the energy transfer process.
Lensless Compound-Eye Vision with Plasmonic Ommatidia
Authors: Kogos L. C. , Li Y. , Liu J. , Li Y. , Tian L. , Paiella R.
Published: January 2021

We report the design, fabrication, and characterization of geometrically-tunable angle-sensitive photodetectors based on plasmonic metasurfaces for the development of flat lensless compound-eye cameras with ultrawide (±75°) fields of view.
Inverse Design of Nanophotonic Structures Using a Hybrid Dimensionality Reduction Technique
Authors: Chen Michael , Zandehshahvar Mohammadreza , Kiarashinejad Yashar , Hemmatyar Omid , Umapathy Divya , Abdollahramezani Sajjad , Adibi Ali
Published: January 2021

In this work, we leverage neural networks and dimensionality reduction both in the design and response space to rapidly and efficiently design near-optimal optical nanostructures producing a desired electromagnetic response.
An Improved Ptychographic Algorithm for Multi-Pulse Phase Retrieval
Authors: Wilhelm Alex M. , Schmidt David D. , Adams Daniel E. , Durfee Charles G.
Published: January 2021

We present a ptychographic phase retrieval algorithm which solves the square root problem in second order pulse measurement techniques and reconstructs the fields of multiple incoherent pulses simultaneously from a single dispersion scan trace.
Origin of robust exceptional points: Restricted bulk zero-mode
Authors: Rivero Jose D. H. , Ge Li
Published: January 2021

We unveil the origin of robust exceptional points in photonic lattices: without invoking sublattice symmetry, this exceptional point is a restricted bulk zero-mode that meets certain condition only in the site adjacent to the boundary.
Binary non-Hermitian disordered lattices
Authors: Tzortzakakis A. F. , Makris K. G. , Szameit A. , Economou E. N.
Published: January 2021

We study the effect of non-Hermiticity on a short-range correlated one dimensional disordered lattice. Despite the fact that all states are localized, the system exhibits transport in the transverse direction between distant sites.
Limits on Thermal Emission from Multiple Coupled Resonators
Authors: Huang Xin , Yeung Christopher , Raman Aaswath P.
Published: January 2021

We develop a temporal coupled-mode theory to describe thermal emission from an arbitrary number of coupled resonators. We derive bounds on total power emitted as a function of bandwidth and verify it with numerical examples.
Detecting Spatially Incoherent Light with Plasmonic Metasurfaces
Authors: Frank Thomas , Buchnev Oleksandr , Cookson Tamsin , Kaczmarek Malgosia , Lagoudakis Pavlos , Fedotov Vassili A.
Published: January 2021

We report on a discovery that homogeneous plasmonic non-diffracting metasurfaces of a certain type respond differently to spatially coherent and incoherent light, enabling robust speckle-free discrimination between different degrees of coherence. The effect has no direct analogue in natural optical materials and may find applications in compact metadevices enhancing imaging, vision, detection, communication and metrology.
Transverse Polarization Structure of an Off-axis Vortex Beam Propagating through a Birefringent Crystal
Authors: Rathor Mohit , Maji Satyajit , Brundavanam Maruthi M.
Published: January 2021

Tracking of C-point singularities in the transverse polarization structure due to unfolding of an off-axis optical vortex beam in a birefringent crystal with different radial and azimuthal positions of the point phase singularity.
Strain Induced Enhanced Photodetector based on Few-layered MoTe2
Authors: Maiti Rishi , Patil Chandraman , Saadi M.A.S.R. , Solares S.D. , Sorger Volker J.
Published: January 2021

Here, we demonstrate a strain-induced enhanced photodetector based on a few-layered MoTe2 integrating onto a non-planarized silicon photonic platform. The photodetector shows high photo responsivity (~0.5 A/W) as compared to planarized photodetector at 1550 nm.
Efficient Light Trapping in the Mid-infrared Using Gold-black phosphorus Nanostructured Absorbers
Authors: Audhkhasi Romil , Povinelli Michelle L.
Published: January 2021

We propose a gold nanostructured design for achieving enhanced absorption in black phosphorus (BP) thin films in the mid-infrared. By suitable design optimization, we are able to achieve enhancement greater than the conventional 4n
2
limit.
On-chip ultrafast plasmonic graphene photodetectors
Authors: Gosciniak Jacek , Khurgin Jacob B.
Published: January 2021

We investigate a waveguide-integrated plasmonic graphene photodetector operating based on the hot carrier either photo-thermoelectric or photo-bolometric effect, which is characterized simultaneously by high responsivity on the scale of hundreds of A/W and high speed on the scale of 100’s of GHz. The proposed detector configuration is based on a hybrid waveguide that allows for efficient absorption in graphene over a short distance and subsequently a large change of conductivity. The results demonstrate the potential of graphene for high-speed communication systems.
Topologically-protected Propagation in Graphene Plasmonic Crystal Waveguides
Authors: You Jian Wei , Wang Yupei , Panoiu Nicolae C.
Published: January 2021

Topological photonics has attracted increasing interest, due to its robust light propagation. Here, we present two valley-Hall topological graphene plasmonic crystal waveguides, namely single- and bi-layer graphene plasmonic crystal waveguides.
Near-optimal spontaneous photon sources on a silicon quantum photonic chip
Authors: Paesani Stefano , Borghi Massimo , Signorini Stefano , Maïnos Alexandre , Pavesi Lorenzo , Laing Anthony
Published: January 2021

We develop integrated spontaneous photon sources in silicon photonics simultaneously satisfying all requirements for large-scale photonic quantum computing: 0:9904 ± 0:0006 spectral purity, 0:985 ± 0:002 indistinguishability, > 90% heralding efficiency, and 0:96 ± 0:02 on-chip heralded quantum interference visibility.
Towards tailored single-photon sources using continuously-tapered waveguides
Authors: Greenwood Harrison. R. , Saleh Mohammed. F.
Published: January 2021

We present a recent numerical analysis investigating spontaneous parametric four-wave mixing in third-order nonlinear waveguides with different tapering patterns. We find that these devices could lead to efficient highly-pure single-photon sources.
Single-path Two-photon Interference Effects Between Spatial Modes
Authors: Hiekkamäki Markus , Fickler Robert
Published: January 2021

Enabled by recent advances, we demonstrate two-photon interference between photon spatial modes. By also scaling the effect up to 4 dimensions, we take a crucial step towards implementing photonic quantum computing with spatial modes.
A Proposal for Nonlinear - Optics Based Quantum Gates in Integrated Photonic Circuits
Authors: Aguayo-Alvarado A. L. , Acevedo-Carrera A. , Domínguez-Serna F. A. , De La Cruz W. , Garay-Palmett K.
Published: January 2021

A proposal for the implementation of single-qubit quantum gates based on a third order nonlinear process in integrated quantum circuits is presented.
Neural Holographic Display and Image Synthesis
Authors: Peng Yifan (Evan) , Choi Suyeon , Padmanaban Nitish , Wetzstein Gordon
Published: January 2021

Holographic displays promise unprecedented capabilities for direct-view displays as well as virtual and augmented reality applications. We develop Neural Holography, an algorithmic computer-generated holography (CGH) framework that uses camera-in-the-loop training to achieve unprecedented image fidelity and real-time framerates.
Generation of Long-Wavelength Radiation in Gas-Filled Anti-Resonant Hollow-Core Fiber
Authors: Gavara Trivikramarao , Hasan Md Imran , Hassan Muhammad Rosdi Abu , Deng Ang , Chang Wonkeun
Published: January 2021

We report the generation of phase-matched long-wavelength radiation at a transmission band-edge of an anti-resonant hollow-core fiber filled with gas. This is achieved with the aid of the resonance-induced dispersion change at the band edge.
Direct on-target temporal measurement of high-intensity laser pulses during laser-matter interactions
Authors: Crespo Helder M. , Witting Tobias , Canhota Miguel , Miranda Miguel , Tisch John W. G.
Published: January 2021

We present a new dispersion-scan-based technique for the temporal characterization of ultrashort laser pulses directly on target and at full laser power. We demonstrate the technique by measuring intense 4-fs pulses in conditions optimized for HHG.
Femtosecond Transient Absorption Spectroscopy Studies of Ethynylthiophene Functionalized Porphyrin
Authors: Biswas Chinmoy , Krishnakanth K. N. , Krishna N. V , Giribabu L , Rao S. Venugopal , Raavi Sai Santosh Kumar
Published: January 2021

Ultrafast excited state molecular relaxation process in a ethynylthiophene functionalized D--A porphyrin (LG5) molecule sensitizer in solution and thin film form has been studied using femtosecond transient absorption techniques upon pumping with 400 nm.
Approximate normalized frequency (V-parameter) and modal cut-off wavelengths of M-type optical fibers
Authors: Jain Deepak , George Mark , Harris Brendan , Fleming Simon
Published: January 2021

We report an easy-to-calculate approximate expression for predicting the modal cut-off wavelengths of M-type fibers, for the first time. This will accelerate the potential of the M-type fibers for novel applications.
Absorption Cross Section Spectra of Bismuth Active Centers Associated with Phosphorus
Authors: Khegai Aleksandr , Firstov Sergei , Riumkin Konstantin , Alyshev Sergey , Afanasiev Fedor , Lobanov Alexey , Guryanov Alexey , Melkumov Mikhail
Published: January 2021

We present the absorption spectra of bismuth active centers associated with phosphorus obtained experimentally. The results showed that the peak values are ~2.5 ±0.4 pm2 and weakly depend on the active centers concentration.
Janus thermal emitter by spoof surface plasmon polariton for radiative cooling
Authors: Lee Gil Ju , Heo Se-Yeon , Kim Do Hyeon , Kim Yeong Jae , Kim Min Seok , Song Young Min
Published: January 2021

We present Janus thermal emitter, which is efficient to cool hot object in enclosure, using spoof surface plasmon resonance to achieve near-ideal selective and broadband emitters in upper and bottom sides of a single sample.
λ-compact ITO Plasmonic Mach-Zehnder Modulator on Si
Authors: Amin Rubab , Maiti Rishi , Gui Yaliang , Suer Can , Miscuglio Mario , Heidari Elham , Chen Ray T. , Dalir Hamed , Sorger Volker J.
Published: January 2021

We demonstrate an integrated wavelength-compact plasmonic ITO-based Mach-Zehnder electro-optic modulator on Si platform, within a miniscule phase-shifter length of 2.5 µm, featuring a half-wave voltage and active device length product of VπL = 95 V·µm.
Sub-wavelength-width Space-Time Surface Plasmon Polaritons on Unpatterned Surfaces
Authors: Schepler Kenneth L. , Zhiyenbayev Yertay , Yessenov Murat , Abouraddy Ayman F.
Published: January 2021

We propose propagation-invariant pulsed surface plasmon polaritons at unpatterned metal-dielectric interfaces that are localized in all dimensions (transverse and longitudinal) and yet maintain sub-wavelength-widths by incorporating judicious spatiotemporal spectral correlations in the optical field.
Programmable Plasmonic Interferometer
Authors: Gui Yaliang , Elkarib Amin , Miscuglio Mario , Sorger Volker J.
Published: January 2021

Here, we experimentally demonstrate a programmable double-slot plasmonic ITO branchless interferometer featuring ultra-compact size and efficient high-speed modulation at telecom wavelength.
Interaction-induced topological phases of photons interacting with atoms
Authors: Zhong Janet , Poshakinskiy Alexander V. , Ke Yongguan , Olekhno Nikita A. , Lee Chaohong , Kivshar Yuri S. , Poddubny Alexander N.
Published: January 2021

We study topological phases of quantum light in waveguides coupled to qubit arrays. We predict interaction-induced localization and quantum Hall phases in simple periodic arrays and radiative topological biphoton edge states in spatially-modulated arrays.
Electro-optical Characteristics of NIR Light Emitting Sources for High Resolution Sensing Systems
Authors: Pūkienė S. , Jasinskas A. , Bukauskas V. , Agafonov V. , Kamarauskas M. , Lukša A. , Bičiūnas A. , Čechavičius B. , Šetkus A. , Butkutė R.
Published: January 2021

Laser diodes with parabolic and rectangular AlGa(As,Bi)/AlGaAs QWs were grown by MBE on n-GaAs(001). Operating wavelength was controlled by QW width and material composition. Laser bars processed by UV lithography were characterized by electroluminescence and I-V measurements.
Fluorescence-based technique to study the specific effects of microwaves
Authors: Redkin M. , Gaiduk N. , Yakunov A.
Published: January 2021

In this work, we use the aqueous solution of organic dye Rhodamine 6G to demonstrate the possibility of a fluorescence-based technique to study specific and non-thermal effects of microwaves.
Scattering resilient single pixel imaging with a gain-switched thulium-doped fiber laser
Authors: Cui Xiaomeng , Ren Yu-Xuan , Shi Jiawei , Tsia Kevin K. , Wong Kenneth K.Y.
Published: January 2021

We demonstrate a scattering-resilient single-pixel imaging with a gain-switched thulium-doped fiber laser and the spatial frequency multiplexing. The long-wavelength enhanced penetration and the spatial multiplexing allows imaging behind the strongly scattering medium.
Electrically Controllable and Thermoresponsive Transparency of a Liquid-Crystal Smart Window
Authors: Sung Guan-Fu , Wu Po-Chang , Lee Wei
Published: January 2021

Utilizing the temperature-dependent characteristic of the electrohydrodynamic effect in a liquid crystal, we demonstrate an electrically active and thermally passive device based on a chiral nematic sandwiched between two conducting glass substrates. It is promising for smart-window applications. The voltage-governed temperature–transmittance behavior favors its adaption for habitants living in various climate zones.
DC-Noise-Free Holographic See-Through Head-Mounted Display with Compact Form Factor
Authors: Bang Kiseung , Lee Songhyun , Lee Byoungho
Published: January 2021

Noise filtering system is an essential part of a holographic display, but it hinders to achieve a compact form factor. We suggest a whole design of a holographic see-through head-mounted display with a compact Bragg DC filter.
Use of Aluminum Gallium Arsenide Interference Coatings in Low-Thermal-Noise Precision Optical Experiments
Authors: Harry Gregory , Penn Steven , Cole Garrett , MacMillan Ian , Demos Nicholas , Gras Slawomir , Evans Matthew , Fejer Martin
Published: January 2021

Epitaxial aluminum-gallium-arsenide-based optical interference coatings (Al-GaAs) are currently being used in low thermal noise precision optical measurements and are being developed specifically for gravitational wave detectors, which require scaling the coating to 30 cm diameter.
Semi-Device-Independent Quantum Random Number Generator based on heterodyne detection and bounded energy
Authors: Avesani Marco , Tebyanian Hamid , Villoresi Paolo , Vallone Giuseppe
Published: January 2021

We show a Semi-Device-Independent QRNG based on energy bound with untrusted source and measurement. Our device exploits heterodyne detection, guaranteeing high generation rates without active phase stabilization. We reach 113 Mbps of generation rate
Multidimensional quantum communication without sharing basis information on the classical channel
Authors: Santagati Raffaele , Price Alasdair B. , Rarity John G. , Leonetti Marco
Published: January 2021

We present a multidimensional quantum communication scheme that enables the sharing of information on the basis “non-classically”, encoding it in the same photonic qudits used for carrying the data in the quantum channel.
Optimal Estimation of Transmission via Squeezed States of Light in the Presence of Loss and Imperfect Detection
Authors: Woodworth Timothy S. , Chan Kam Wai Clifford , Hermann-Avigliano Carla , Marino Alberto M.
Published: January 2021

We explore fundamental limits on transmission estimation with bright single and two-mode squeezed states of light. We show that their quantum Fisher information surpasses the one of coherent states and approaches the ultimate limit with Fock states.
Focusing and imaging with mode selection through multimode fibers
Authors: Singh Sakshi , Labouesse Simon , Piestun Rafael
Published: January 2021

We present high-resolution imaging using arbitrary illuminations from a multimode fiber such as naturally occurring speckle patterns. Further, we demonstrate focusing at the output of the fiber using a selected mode composition via wavefront shaping.
Two interpenetrating hexagonal lattice in clad photonic crystal fiber for THz sensing
Authors: Kumar Vikas , Varshney R. K. , Kumar Sunil
Published: January 2021

A solid core index guiding photonic crystal fiber with two interpenetrating hexagonal lattices of air and teflon columns in the cladding region is designed for THz sensing of CS2 with delay time measurements.
Waveguide-based Detection of Protease Activity using Surface-Enhanced Raman Spectroscopy
Authors: Turk Nina , Raza Ali , Wuytens Pieter , Demol Hans , Van Daele Michiel , Detavernier Christophe , Skirtach Andre , Gevaert Kris , Baets Roel
Published: January 2021

We used a nanoplasmonic slot waveguide for the first time demonstration of waveguide-based detection of protease activity using Surface-Enhanced Raman Spectroscopy (SERS), paving the way for an integrated lab-on-a-chip protease activity monitoring.
Measuring Pure States in the Orbital Angular Momentum Basis Using Nine Image Acquisitions
Authors: Kulkarni Girish , Karan Suman , Jha Anand K.
Published: January 2021

We propose a novel technique for measuring high-dimensional pure states of light in the orbital-angular-momentum (OAM) basis using only nine multipixel image acquisitions. We experimentally demonstrate the technique for laboratory-generated states up to 25 dimensions, reporting a mean fidelity greater than 90 % up to 11 dimensions.
Generation of a Spatiotemporal OAM Beam with a Time-Variant Beam Waist Using Coherent Combination of Multiple Frequencies Each Containing Multiple LG modes
Authors: Minoofar Amir , Zhao Zhe , Fallahpour Ahmad , Song Hao , Zhang Runzhou , Zhou Kaiheng , Pang Kai , Tur Moshe , Willner Alan E.
Published: January 2021

We simulate a spatiotemporal OAM beam with a time-variant beam waist by coherent combining multiple frequencies each containing multiple LG modes. We analyze its beam waist oscillation depending on the number of frequencies and modes.
Orbital angular momentum conservation in second-harmonic generation with spatiotemporal optical vortices
Authors: Hancock S.W. , Zahedpour S. , Milchberg H.M.
Published: January 2021

Spatiotemporal optical vortices (STOVs) are a new type of optical orbital angular momentum (OAM) residing in the space-time domain. Here we examine, through experiment and simulation, how STOV OAM is transformed in second-harmonic generation.
Angular momentum of spatiotemporal optical vortices in dispersive media
Authors: Zahedpour S. , Hancock S. W. , Jhajj N. , Milchberg H. M.
Published: January 2021

We present results on the modal and quasi-modal linear propagation in a dispersive medium of ultrashort pulses carrying spatiotemporal optical vortices. We isolate contributions of wavefront tilt and dispersion to the optical angular momentum.
OASys: Envisioning an Opto-electronic Accelerator for Deep Learning Applications
Authors: Wang Youchao , Wilkinson Timothy D.
Published: January 2021

We propose OASys, an Opto-electronic Accelerator System, for efficient deep learning acceleration. The system takes on a full-stack architectural design approach and combines the power of Fourier optics and conventional FPGAs.
Photonic Weight Banks based on Multimode Fiber for Neuromorphic Networks
Authors: Shi Taichu , Veneziano Nico , Qi Yang , Chen Haoshuo , Fontaine Nicolas K. , Ryf Roland , Neilson David T. , Wu Ben
Published: January 2021

We demonstrate a photonic weight bank for neuromorphic computing by using multimode fibers. Weights control for multiple inputs of a photonic neuron are achieved by tuning the coupling power to the modes in multimode fibers.
Electro-Optical Hybrid Fourier Neural Network with Amplitude-Only Modulation
Authors: Hu Zibo , Miscuglio Mario , Li Shurui , George Jonathan , Gupta Puneet , Sorger Volker J.
Published: January 2021

We demonstrate an electro-optical hybrid massively-parallel Fourier Neural Network exploiting Digital Micromirror Devices performing amplitude-only filtering, achieving ~10,000 2-Megapixel convolutions per second, preserving the inference accuracy level similar to phase-based approaches.
An Inverse Design Method Combining Particle Swarm Optimization and Wavefront Matching Method for Multiplane Light Conversion
Authors: He Lin , Lin Zhongzheng , Wen Yuanhui , Chen Yujie , Yu Siyuan
Published: January 2021

We propose a novel inverse design method for multi-plane light conversion via combining the particle swarm optimization and the wavefront matching method, which enables efficient searching for design parameters.
Coherent imaging through scatter using an interpretable deep neural network
Authors: Li Yunzhe , Cheng Shiyi , Xue Yujia , Tian Lei
Published: January 2021

We propose a deep neural network model that is agnostic to scatter displacements, and system defocus up to 10X depth of field. We develop an analysis framework for interpreting the mechanism of our DNN model.
Quantitative Large Area Binding Sensor Using A High-speed Lens-free Holographic Microscope
Authors: Xiong Zhen , McLeod Euan
Published: January 2021

Aggregation of > 104 beads due to specific protein molecules is quantified using microfluidic chips, fast lens-free microscopes, and image processing algorithms. The limit of detection, cost, and size are appropriate for COVID-19 point-of-care testing.
Full-Field Mechanical Strain Mapping Using Digital Holographic Microscopy
Authors: Runyu Cao , Xintong Wu , Feng Pan , Wen Xiao
Published: January 2021

We proposed a method for mapping full-field shearing strain distributions in x and y direction. Displacements and strain maps of living osteocytes can be estimated from phase maps recorded by a digital holographic microscopy.
Wavefront Reconstruction for Structured Light based Microscopic Three-dimensional Imaging
Authors: Shi Taichu , Qi Yang , Chen Haoshuo , Fontaine Nicolas K. , Ryf Roland , Neilson David T. , Wu Ben
Published: January 2021

We demonstrate an interferometer method to improve the depth of field of the microscopic three-dimensional imaging system with structured light illumination. Both phase and amplitude of the optical waves are recorded for wavefront reconstruction.
Sub-harmonic Entrainment Breather Solitons in Ultrafast Lasers
Authors: Xian Tianhao , Zhan Li , Zhang Wenchao , Zhang Wenyan , Gao Lirun
Published: January 2021

The breather period of breather soliton generated in mode-locked fiber laser tends to be integral folds of roundtrip time at the vicinity. This novel non-Hermitian degeneracy can enhance the stability of breather soliton.
Programmable Photonic Circuits: a flexible way of manipulating light on chips
Authors: Bogaerts Wim , Rahim Abdul , Chen Xiangfeng , Van Iseghem Lukas , Deng Hong , Wang Mi , Zand Iman , Ribeiro Antonio , Tormo Alejandro Diaz , Khan Umar
Published: January 2021

Programmable Photonic integrated circuits are optical chips where the flow of light is configured through electronics. This provides a flexible way to explore new photonic functions, and a lower threshold for deployment in new applications.
Demonstration of Two-Dimensional Extreme Skin Depth Engineering in CMOS Photonics Foundry
Authors: van Niekerk Matthew , Jahani Saman , Bickford Justin , Cho Pak , Anderson Stephen , Leake Gerald , Coleman Daniel , Fanto Michael L. , Tison Christopher C. , Howland Gregory A. , Jacob Zubin , Preble Stefan F.
Published: January 2021

We implement extreme skin depth engineering (e-skid) in two dimensions to suppress or enhance evanescent coupling on-demand. This is demonstrated experimentally with a large gap, bendless directional coupler exhibiting a broad bandwidth (≥ 40 nm).
A Localized Surface Plasmon Polariton Based Single Solid Core Flat Fiber Microbiosensor
Authors: Aruna Gandhi M. S. , Li Qian
Published: January 2021

The proposed single-solid flat-fiber microbiosensor based on localized surface plasmon polariton achieves a maximum wavelength and amplitude sensitivities of 10000 nm/RIU and 190 RIU-1 with sensor resolution of 1×10-6 RIU for biological applications.
Fluorescence Enhancement by the Dipole and Quadrupole Surface Plasmons of Silver Nanoparticles
Authors: Lee Daedu , Song Junghyun , Song Gyeonghyun , Pang Yoonsoo
Published: January 2021

Fluorescence enhancement of dyes with homogeneous silver colloidal nanofilms appears strongly dependent on the spectral overlap between the dipole and quadrupole surface plasmons of nanoparticles and the optical properties of dyes such as emission spectrum.
Random Fiber Laser Pumped Raman Gain Square-wave Pulse Laser
Authors: Wang Shanshan , Zhang Weili
Published: January 2021

We realized square-wave pulses in a mode-locked Raman fiber laser pumped by a random fiber laser. Pulse duration and repetition rate (i.e., high-order harmonic) can be tuned through polarization state and pump power.
Analysis of optical distribution in Photodynamic Therapy treatment applied to brain glioma
Authors: de la Nuez-Díaz R. , Arce-Diego J. L. , Fanjul-Vélez F.
Published: January 2021

We analyze the different phases of glioma tumors treated with Photodynamic Therapy to obtain results that can help in diagnosing and treating this type of disease, generating a clinically predictive model.
Hysteresis in backaction force mediated by photonic nanojet
Authors: Ren Yu-Xuan , Zhou Yi , Mao Huade , Shi Jiawei , Cui Xiaomeng , Tsia Kevin K. , Wong Kenneth K.
Published: January 2021

We demonstrate that the dielectric microsphere swims towards the continuous wave light in response to the photonic nanojet and the hysteresis in backaction force on the pure dielectric particle under the counter propagating beams.
Extremely Dispersive Schott Glass Fiber with Coupled High-Index Ring for OAM Modes
Authors: Geng Wenpu , Li Yiqiao , Fang Yuxi , Wang Yingning , Bao Changjing , Yan Yan , Wang Zhi , Zhang Weigang , Huang Hao , Ren Yongxiong , Pan Zhongqi , Yue Yang
Published: January 2021

We propose a highly dispersive Schott glass fiber for high-order orbital angular momentum (OAM) modes using high-index coupled ring structure. A large negative dispersion of -47,618 ps/(nm·km) is achieved for OAM
14,1
mode at 1668 nm.
The Recording of a Cylindrical Hologram by Optical Scanning Holography
Authors: Liu Jung-Ping , Chen Wen-Ting , Poon Ting-Chung
Published: January 2021

The direct recording of a curved digital hologram, e.g. a cylindrical hologram, is a challenge. Here we proposed a system based on optical scanning holography (OSH) to record a cylindrical digital hologram.
Omni-Resonant Space-Time Wave Packets with Programmable Fabry-Pérot-Cavity Spectra
Authors: Shiri Abbas , Yessenov Murat , Aravindakshan Rohinraj , Abouraddy Ayman F.
Published: January 2021

A unique class of pulsed fields of arbitrary spectral profiles and bandwidths is demonstrated theoretically and experimentally that can traverse a Fabry-Pérot Cavity invariantly even when far exceeding cavity resonant linewidth.
Epsilon-Near-Zero ITO Metafilm and Near-IR Photonic Application
Authors: Ni Jimmy H. , DeLoach Andrew S. , Cho Sang-Yeon , Zhou Weimin
Published: January 2021

We are reporting micro-scale-thick ITO metafilm in the ENZ regime which permits the design of new ENZ photonic devices. Optical properties have been studied, as well as their potential application for the near-IR photonic devices.
Constructing an effective Hamiltonian with local interaction in the synthetic space for photons
Authors: Yuan Luqi , Dutt Avik , Qin Mingpu , Fan Shanhui , Chen Xianfeng
Published: January 2021

Synthetic dimensions have attracted recent interest in the photonics society. We propose to create a local photon-photon interaction in frequency dimension with a careful design of the group velocity dispersion of waveguide forming the ring.
Efficient High-order Optical Harmonics Generation from Resonant Semiconductor Metasurfaces Supporting Bound States in the Continuum
Authors: Zograf George , Koshelev Kirill , Korolev Viacheslav , Zalogina Anastasia , Choi Duk-Yong , Hollinger Richard , Luther-Davies Barry , Zürch Michael , Kartashov Daniil , Spielmann Christian , Makarov Sergey , Kruk Sergey , Kivshar Yuri
Published: January 2021

Through the utilization of optical bound states in the continuum supported by resonant Si metasurfaces in the mid-IR spectral range, we demonstrate the generation of odd optical harmonics, from the 3rd to the 11th order.
Simulated Eavesdropper Detection in Free-Space Optics ON-OFF Keying with Deep Learning
Authors: Savino Nicholas J. , Lohani Sanjaya , Glasser Ryan T.
Published: January 2021

We use a deep learning neural network to successfully indicate when an eavesdropper is present in a free-space optics ON-OFF keying communication scheme, in which the bit stream has passed through turbulence.
Strain-Tuned Optical Spectroscopy on 2D Materials
Authors: Aslan Ozgur Burak , Deng Minda , Brongersma Mark L. , Heinz Tony F.
Published: January 2021

We have used strain-tuning as a means of probing the fundamental physics of 2D materials. The changes in the optical fingerprints such as exciton linewidths reveal information about their exciton-phonon coupling and electronic structure.
High-Contrast-Grating Resonant-Cavity-Enhanced Photodetector
Authors: Guan Mingyue , Chang-Hasnain Connie
Published: January 2021

Two HCG designs are used as the top mirror for a resonant-cavity detector. A broadband reflector can result in significantly improved manufacturing tolerance, whereas a resonator reflector results in a novel surface normal optical switch.
Polarization Insensitive Grating Coupler Based on a Zero-Birefringence Corelet Waveguide
Authors: Zhang Bohan , Popović Miloš A.
Published: January 2021

We propose a polarization insensitive grating coupler using a zero-birefringence corelet waveguide. Simulations show coupling of −5.4 dB for TE and −5.6 dB for TM at 1.3 µm wavelength and a 61 nm polarization insensitive 3 dB bandwidth.
Characterization of Biological Tissue using Four-channel based Stokes-Mueller Polarization Microscope
Authors: Spandana K. U. , Sindhoora K. M. , Mahato K. K. , Banik Soumyabrata , Mazumder Nirmal
Published: January 2021

We have developed a four-channel Stokes-Mueller polarization microscope in transmission geometry, employed with an image classification algorithm for quantitative analysis of microstructural properties of the tissue specimens.
Silicon quantum photonic device for multidimensional controlled unitaries
Authors: Koteva Konstantina I. , Gentile Antonio A. , Flynn Brian , Paesani Stefano , Adcock Jeremy C. , Wang Jianwei , Wiebe Nathan , Thompson Mark G. , Santagati Raffaele , Laing Anthony
Published: January 2021

We present a fully reconfigurable silicon quantum photonic device capable of performing controlled four-dimensional unitary operations with 0.84 ± 0.02 fidelity. We report its characterisation by process tomography and deploy it to successfully perform a quantum model learning protocol.
Experimental demonstration of a quantum model learning agent
Authors: Gentile Antonio A. , Flynn Brian , Knauer Sebastian , Wiebe Nathan , Paesani Stefano , Granade Christopher E. , Rarity John G. , Santagati Raffaele , Laing Anthony
Published: January 2021

Developing novel quantum devices poses the problem of their efficient characterization. We introduce and experimentally demonstrate a methodology to automatically formulate and rank Hamiltonian models, learning the most appropriate in reproducing the observed system’s dynamics.
Overriding the Boundary Conditions in a Planar Waveguide Via Hybrid Space-Time Modes
Authors: Shiri Abbas , Yessenov Murat , Webster Scott , Schepler Kenneth L. , Abouraddy Ayman F.
Published: January 2021

We show that propagation-invariant ‘space-time’ wave packets can be used to tailor the guided-mode characteristics in a thin film waveguide, including mode size, group index, and group velocity dispersion, independently of the boundary conditions.
Observation of tunable coupling Dyakonov surface wave at liquid-crystal-based interface
Authors: Li Yan , Sun Jingbo , Wen Yongzheng , Zhou Ji
Published: January 2021

In this work, by rotating the applied magnetic field, we have demonstrated a tunable coupling of Dyakonov surface wave at the interface between polycarbonate and nematic liquid crystal experimentally.
Black Box Coupled Mode Theory: Analysis of Loading Effects in Optical interactions between Nanoresonators
Authors: Tali Seied Ali Safiabadi , Zhou Wei
Published: January 2021

Black Box Coupled Mode Theory is an electromagnetic resonator analysis and design tool based on the theory of quasinormal modes. Alongside its rigorous formulation, the theory casts a novel insight into electromagnetic resonators' operation principles.
Coherent Optical Control of Quantum Dot Hole Spins using Triplet Trion States
Authors: Carter Samuel G. , Bracker Allan S. , Yakes Michael K. , Tran Kha X. , Grim Joel Q. , Gammon Dan
Published: January 2021

We use optical transitions of positively charged excitons (trions) with one hole in an excited orbital to solve a long-standing challenge for quantum dots of having both fast optical spin control and efficient spin readout.
Simultaneous measurements of the two-photon absorption coefficient and the free-carrier absorption cross-section in AlGaAs waveguides
Authors: Espinosa Daniel H. G. , Harrigan Stephen R. , Awan Kashif M. , Rasekh Payman , Dolgaleva Ksenia
Published: January 2021

Using nonlinear transmittance technique, we measured the two-photon absorption coefficient and free-carrier absorption cross-section of AlGaAs waveguides of strip-loaded, nanowire and half-core geometries at the telecommunication C-band wavelengths.
Ultrasound-modulated Laser Optical Feedback Imaging System with Microbubbles
Authors: Hua Ziyu , Zhu Kaiyi , Tan Yidong
Published: January 2021

Ultrasound-modulated laser optical feedback imaging system with microbubbles is simulated. The result reflects that microbubbles can improve the imaging contrast when optical absorption contrast between the background and absorbers is relatively low.
Novel Method of Defocus Estimation Based on Combination of Deep Learning Features and Handcrafted Features for Removal of Image Artifacts in Wavefront Coding
Authors: Sharma Shruti , Vasishtha D.
Published: January 2021

Removal of image artifacts due to digital post processing in wavefront coding requires knowledge of defocus map. A novel method based on combination of deep learning features and handcrafted features is proposed for the same.
Quantum emission from Cl doped ZnSe quantum wells
Authors: Karasahin Aziz , Pettit Robert M. , Jansen Marvin Marco , Pawlis Alexander , Waks Edo
Published: January 2021

We demonstrate single photon emission from donor bound excitons in Cl doped ZnSe quantum wells. The emitters are investigated in cryogenic temperatures, and they showed high binding energies and short lifetimes.
Photon Statistics of Filtered Quantum Dot Resonance Fluorescence
Authors: Phillips Catherine L. , Brash Alistair J. , McCutcheon Dara P.S. , Iles-Smith Jake , Skolnick Maurice S. , Fox A. Mark , Nazir Ahsan
Published: January 2021

We exploit spectral filtering to modify the photon statistics of resonance fluorescence from a quantum dot, demonstrating that the observed antibunching is an interference effect and cannot be measured simultaneously with a sub-natural linewidth.
Active tuning of silicon photonic microring resonator towards a chiral exceptional point
Authors: Lee Hwaseob , Li Tiantian , Cheng Chen , Ozdemir Sahin K. , Gu Tingyi
Published: January 2021

We demonstrate a silicon photonic passive PT-symmetric structure operating at an exceptional point, with dynamic mode-splitting tunability enabled by a local heater.
In vivo imaging of human retina and cornea with spatially incoherent Fourier-domain full-field optical coherence tomography
Authors: Auksorius Egidijus , Borycki Dawid , Stremplewski Patrycjusz , Liżewski Kamil , Tomczewski Slawomir , Niedźwiedziuk Paulina , Sikorski Bartosz L. , Wojtkowski Maciej
Published: January 2021

We present spatially incoherent Fourier-domain full-field optical coherence tomography system that reduces crosstalk noise in retina images and enables corneal imaging. It is achieved by using a fast deformable membrane to reduce spatial coherence.
Phase Added Stereogram for Calculation of Large Horizontal Parallax Only Computer-Generated Holograms
Authors: Martinez-Carranza Juan , Kukołowicz Rafał , Kozacki Tomasz
Published: January 2021

A phase added stereogram method that allows calculation of computer-generated holograms that have large horizontal parallax is developed. It is shown that our method can synthetize large holograms with high computational efficiency.
Electromagnetically induced transparency in Raman gain for realizing a superluminal ring laser
Authors: Sternfeld Yael , Zhou Zifan , Scheuer Jacob , Shahriar M. S.
Published: January 2021

We present a technique for realizing a superluminal ring laser with controllable sensitivity enhancement factor using a single isotope of rubidium vapor by producing electromagnetically induced transparency (EIT) in Raman gain via optical pumping.
Quantum Effects in the Interaction of Optical Excitations and Fast Electrons
Authors: Di Giulio V. , Kociak M. , de Abajo F. Javier García
Published: January 2021

We investigate the interaction between fast electrons and confined quantum optical excitations. In particular, we explore the effects that the quantum nature of light induces on the electron wave function and the possibility of retrieving its second-order correlation function through the intensities of the peaks in the electron energy spectrum.
Coupled Piezo-Optomechanical Devices for Bi-Directional Microwave-to-Optical Quantum Transduction
Authors: Guha B. , Wu M. , Davanço M. , Song Jin Dong , Srinivasan K.
Published: January 2021

We report progress in bi-directional microwave-to-optical conversion mediated by a resonant mechanical super-mode in a coupled piezo-optomechanical system with theoretically predicted high conversion efficiency and potential in quantum networks.