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Journal articles on the topic 'Quantum-enhanced filtering'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Sindugatta Nagaraja, Prajwalasimha, Naveen Kulkarani, Raghavendra M. Ichangi, et al. "QEMF for spatial domain pre-processing in iris biometrics: advancing accuracy and efficiency in recognition systems." Bulletin of Electrical Engineering and Informatics 14, no. 3 (2025): 1959–68. https://doi.org/10.11591/eei.v14i3.9036.

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This article presents a Quantum-Enhanced Median Filtering (QEMF) method for spatial domain pre-processing in iris biometrics, designed to improve image denoising and recognition accuracy. Traditional median filtering often struggles with high noise density, leading to inconsistencies in the denoised image. Our approach enhances the median filtering process by integrating quantum-inspired principles with statistical measures, combining median and average values of neighboring pixels. This hybrid strategy preserves the structural integrity of the original image while effectively reducing noise.

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2

Xu, Rui, Lulu Huang, Jian Zhang, et al. "Nanostructured SnSe integrated with Se quantum dots with ultrahigh power factor and thermoelectric performance from magnetic field-assisted hydrothermal synthesis." Journal of Materials Chemistry A 7, no. 26 (2019): 15757–65. http://dx.doi.org/10.1039/c9ta03967h.

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Through magnetic field-assisted hydrothermal synthesis, high thermoelectric performance of SnSe is obtained due to Se quantum dots and smaller nano grains, leading to enhanced density of states and energy filtering effect.

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Ruiz, Virginia, Ana Pérez-Marquez, Jon Maudes, Hans-Jürgen Grande, and Nieves Murillo. "Enhanced photostability and sensing performance of graphene quantum dots encapsulated in electrospun polyacrylonitrile nanofibrous filtering membranes." Sensors and Actuators B: Chemical 262 (June 2018): 902–12. http://dx.doi.org/10.1016/j.snb.2018.02.081.

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4

BO, TAO, FU-LI LI, and YU FENG. "OMNIDIRECTIONAL FILTERING BASED ON ZERO-AVERAGED REFRACTIVE INDEX GAP IN PHOTONIC QUANTUM WELL STRUCTURES." Modern Physics Letters B 23, no. 25 (2009): 2943–53. http://dx.doi.org/10.1142/s021798490902103x.

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A photonic quantum well (PQW) structure based on the zero-averaged refractive index gap is constructed and the transmission properties are investigated. Quantized confined photonic states resulting from the photonic confinement effect are observed. We find that the resonant transmissions are not only weakly dependent on the incident angle but also insensitive to polarization of light. More importantly, the number of the confined photonic states can be controlled by simply adjusting the cell number of the well photonic crystal. It is shown that strong field localization is found when the well p

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5

Anitha, Mary C. "Second-order polynomial interpolation filters for image demosaicking with perceptual-based tone mapping and quantum-inspired optimization." i-manager's Journal on Information Technology 13, no. 4 (2024): 25. https://doi.org/10.26634/jit.13.4.21521.

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An innovative method for image demosaicking is introduced, leveraging perceptual-based tone mapping, secondorder polynomial interpolation filters, and Quantum-Inspired Optimization to achieve superior image reconstruction quality. The proposed approach integrates an Autoregressive Wavelet Water Optimization (WWO) algorithm to determine coefficients for second-order polynomial filters within the LPA-ICI framework. Simultaneously, a Deep Convolutional Neural Network (Deep CNN) is employed to generate residual images, capturing intricate features. The outputs of the interpolation-based method and

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Lin, Guoxiong, Yaodan Chi, Xinyu Ding, et al. "Wind-Speed Prediction in Renewable-Energy Generation Using an IHOA." Sustainability 17, no. 14 (2025): 6279. https://doi.org/10.3390/su17146279.

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Accurate wind-speed prediction plays an important role in improving the operation stability of wind-power generation systems. However, the inherent complexity of meteorological dynamics poses a major challenge to forecasting accuracy. In order to overcome these limitations, we propose a new hybrid framework, which combines variational mode decomposition (VMD) for signal processing, enhanced quantum particle swarm optimization (e-QPSO), an improved walking optimization algorithm (IHOA) for feature selection and the long short-term memory (LSTM) network, and which finally establishes a reliable

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Amorós-Binefa, Júlia, and Jan Kołodyński. "Noisy atomic magnetometry in real time." New Journal of Physics 23, no. 12 (2021): 123030. http://dx.doi.org/10.1088/1367-2630/ac3b71.

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Abstract Continuously monitored atomic spin-ensembles allow, in principle, for real-time sensing of external magnetic fields beyond classical limits. Within the linear-Gaussian regime, thanks to the phenomenon of measurement-induced spin-squeezing, they attain a quantum-enhanced scaling of sensitivity both as a function of time, t, and the number of atoms involved, N. In our work, we rigorously study how such conclusions based on Kalman filtering methods change when inevitable imperfections are taken into account: in the form of collective noise, as well as stochastic fluctuations of the field

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8

Ferreri, Alessandro, Matteo Santandrea, Michael Stefszky, et al. "Spectrally multimode integrated SU(1,1) interferometer." Quantum 5 (May 27, 2021): 461. http://dx.doi.org/10.22331/q-2021-05-27-461.

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Nonlinear SU(1,1) interferometers are fruitful and promising tools for spectral engineering and precise measurements with phase sensitivity below the classical bound. Such interferometers have been successfully realized in bulk and fiber-based configurations. However, rapidly developing integrated technologies provide higher efficiencies, smaller footprints, and pave the way to quantum-enhanced on-chip interferometry. In this work, we theoretically realised an integrated architecture of the multimode SU(1,1) interferometer which can be applied to various integrated platforms. The presented int

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9

Jiang, Jia-Huei, Ning-Yuan Lue, Feng-Wu Chen, and Yu-Shu G. Wu. "All-electrical valley filtering in graphene systems (II): Numerical study of electron transport in valley valves." Journal of Applied Physics 132, no. 16 (2022): 164302. http://dx.doi.org/10.1063/5.0114389.

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This work performs a numerical study of electron transport through the fundamental logic gate in valleytronics—a valley valve consisting of two or increasing number of valley filters. Various typical effects on the transport are investigated, such as those due to interface scattering, long- and short-range impurity scattering, edge roughness, strain, inter-filter spacing, or increasing number of valley filters. For illustration, we consider the class of specific valves built from graphene quantum wire valley filters in single layer or bilayer graphene, with the filters subject to separate cont

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10

Tsarev, Sergey, Daria Proniakova, Xuqi Liu, et al. "Vertically stacked monolithic perovskite colour photodetectors." Nature 642, no. 8068 (2025): 592–98. https://doi.org/10.1038/s41586-025-09062-3.

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Abstract Modern colour image sensors face challenges in further improving sensitivity and image quality because of inherent limitations in light utilization efficiency1. A major factor contributing to these limitations is the use of passive optical filters, which absorb and dissipate a substantial amount of light, thereby reducing the efficiency of light capture2. On the contrary, active optical filtering in Foveon-type vertically stacked architectures still struggles to deliver optimal performance owing to their lack of colour selectivity, making them inefficient for precise colour imaging3.

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11

Merzoq, Mohannad A., and Jenan M. Al-Mukh. "Theoretical Study for Spin Transport properties of FM-(G/C)10- FM." Basrah Researches Sciences 50, no. 1 (2024): 12. http://dx.doi.org/10.56714/bjrs.50.1.6.

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In the present study, we propose a physical model to study spin transport through DNA system and provide apparent physical mechanism for spin dependent phenomenon. The system considered in our work is DNA bases guanine-cytosine coupled to two ferromagnetic leads (FM-(G/C)10-FM) in parallel and anti-parallel configuration case, throughout magnetic quantum contacts. Our treatment is based on the tight binding model to derive obvious formula for the transmission spectrum which is employed to investigate the spin dependent current-bias voltage characteristics and the temperature - Conductance depe

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12

Rajesh Dey. "Applications of Machine Learning in Islamic Finance." Journal of Information Systems Engineering and Management 10, no. 26s (2025): 794–804. https://doi.org/10.52783/jisem.v10i26s.4286.

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Islamic finance, guided by Shariah principles, has witnessed significant global expansion, surpassing $3 trillion in assets. Unlike conventional finance, Islamic finance prohibits interest (riba), excessive uncertainty (gharar), and unethical investments. With the rise of financial technology (FinTech), machine learning (ML) is increasingly being utilized to enhance efficiency, risk management, and decision-making in Islamic financial institutions. ML techniques such as supervised learning, unsupervised learning, reinforcement learning, and natural language processing (NLP) are revolutionizing

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13

Nakamura, Yoshiaki. "(Invited) Epitaxial Growth of Quasi-Low Dimensional Materials for Novel Thermoelectric Films." ECS Meeting Abstracts MA2024-01, no. 21 (2024): 1307. http://dx.doi.org/10.1149/ma2024-01211307mtgabs.

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Thermoelectric conversion devices or modules with high performance have been expected for the electrical power generation from wasted heat. Then, thermoelectric materials with high dimensionless figure of merit zT at temperature T , described as S 2 σT/κ have been intensively sought, where S is Seebeck coefficient, σ is electrical conductivity, and κ is thermal conductivity. Therein, intercorrelation among three thermoelectric properties has been a big barrier against high zT. In conventional approach, the heavy elements such as rare metals are used because they inherently bring small κ in the

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14

Merveille, Fomekong Fomekong Rachel, Baozhu Jia, Zhizun Xu, and Bissih Fred. "Advancements in Sensor Fusion for Underwater SLAM: A Review on Enhanced Navigation and Environmental Perception." Sensors 24, no. 23 (2024): 7490. http://dx.doi.org/10.3390/s24237490.

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Underwater simultaneous localization and mapping (SLAM) has significant challenges due to the complexities of underwater environments, marked by limited visibility, variable conditions, and restricted global positioning system (GPS) availability. This study provides a comprehensive analysis of sensor fusion techniques in underwater SLAM, highlighting the amalgamation of proprioceptive and exteroceptive sensors to improve UUV navigational accuracy and system resilience. Essential sensor applications, including inertial measurement units (IMUs), Doppler velocity logs (DVLs), cameras, sonar, and

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15

CHEN, XIAOBO, and GUANGPING CHEN. "ENHANCED FORMATION OF Si NANOCRYSTALS IN SiO2 BY LIGHT-FILTERING RAPID THERMAL ANNEALING." Surface Review and Letters 22, no. 04 (2015): 1550049. http://dx.doi.org/10.1142/s0218625x15500493.

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In this work, silicon-rich oxide (SRO) films with designed thickness of ~100 nm were deposited by a bipolar pulse and radio frequency magnetron co-sputtering. For comparison, the samples were then treated in a nitrogen atmosphere by conventional rapid thermal annealing (CRTA) or light-filtering rapid thermal annealing (LRTA) at 900–1100°C for 2 min. Raman spectra, grazing incident X-ray diffraction (XRD), transmission electron microscopy (TEM), Hall measurements, and current density–voltage measurements were carried out to analyze the microstructural and electrical properties of samples. Compa

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16

Sun, Shaobin, Hong Yao, Xinyang Li, Shihai Deng, Shenlong Zhao, and Wen Zhang. "Enhanced Degradation of Sulfamethoxazole (SMX) in Toilet Wastewater by Photo-Fenton Reactive Membrane Filtration." Nanomaterials 10, no. 1 (2020): 180. http://dx.doi.org/10.3390/nano10010180.

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Pharmaceutical residuals are increasingly detected in natural waters, which made great threat to the health of the public. This study evaluated the utility of the photo-Fenton ceramic membrane filtration toward the removal and degradation of sulfamethoxazole (SMX) as a model recalcitrant micropollutant. The photo-Fenton catalyst Goethite (α-FeOOH) was coated on planar ceramic membranes as we reported previously. The removal of SMX in both simulated and real toilet wastewater were assessed by filtering the feed solutions with/without H2O2 and UV irradiation. The SMX degradation rate reached 87%

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17

Strano, Michael S. "(Invited) Nanosensor Coupling to Human and Plant Interfaces for Real Time Chemical Information Transfer." ECS Meeting Abstracts MA2023-01, no. 9 (2023): 1129. http://dx.doi.org/10.1149/ma2023-0191129mtgabs.

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Our laboratory at MIT has been interested over the past few years in new techniques to facilitate the transfer of chemical information from living organisms, specifically plants, animals and humans, for applications ranging from precision agriculture to precision medicine. This presentation will discuss recent advances on this topic. As tool towards this end, fluorescent nanosensors hold the potential to revolutionize life sciences and medicine. However, their adaptation and translation into the in vivo environment is fundamentally hampered by unfavourable tissue scattering and intrinsic autof

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18

Gütl, Christian. "Editorial." JUCS - Journal of Universal Computer Science 30, no. (1) (2024): 1–2. https://doi.org/10.3897/jucs.119196.

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Dear Readers, I would like to wish you all the best for the new year! It is with great pleasure that I welcome you to our first regular issue in 2024, which is already the 30th year that J.UCS has been available to authors and readers without any interruptions. I would like to gratefully acknowledge the visionary ideas of Prof. Hermann Maurer, who founded the journal and ran it successfully for many years, preparing the ground for it to become one of the longest-running open content journals in computer science. Looking back on the past year, we have further increased our visibility and taken

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19

Gütl, Christian. "Editorial." JUCS - Journal of Universal Computer Science 30, no. 1 (2024): 1–2. http://dx.doi.org/10.3897/jucs.119196.

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Dear Readers,&nbsp; I would like to wish you all the best for the new year! It is with great pleasure that I welcome you to our first regular issue in 2024, which is already the 30th year that J.UCS has been available to authors and readers without any interruptions. I would like to gratefully acknowledge the visionary ideas of Prof. Hermann Maurer, who founded the journal and ran it successfully for many years, preparing the ground for it to become one of the longest-running open content journals in computer science.&nbsp; Looking back on the past year, we have further increased our v

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20

Prajwalasimha, Sindugatta Nagaraja, Kulkarni Naveen, M. Ichangi Raghavendra, et al. "QEMF for spatial domain pre-processing in iris biometrics: advancing accuracy and efficiency in recognition systems." May 16, 2025. https://doi.org/10.11591/eei.v14i3.9036.

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This article presents a Quantum-Enhanced Median Filtering (QEMF) method for spatial domain pre-processing in iris biometrics, designed to improve image denoising and recognition accuracy. Traditional median filtering often struggles with high noise density, leading to inconsistencies in the denoised image. Our approach enhances the median filtering process by integrating quantum-inspired principles with statistical measures, combining median and average values of neighboring pixels. This hybrid strategy preserves the structural integrity of the original image while effectively reducing noise.

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21

Wu, Kai, Rigui Zhou, and Jia Luo. "An anti-aliasing filtering of quantum images in the spatial domain using a pyramid structure." Chinese Physics B, February 2, 2024. http://dx.doi.org/10.1088/1674-1056/ad2504.

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Abstract As a part of quantum image processing, quantum image filtering is a crucial technology in the development of quantum computing. Low-pass filtering can effectively achieve anti-aliasing effects on images. Currently, most quantum image filtering is based on classical domains and grayscale images, with relatively fewer studies on anti-aliasing in the quantum domain. This paper proposes a scheme for anti-aliasing filtering based on quantum grayscale and color image scaling in the spatial domain. It achieves the effect of antialiasing filtering on quantum images during the scaling process.

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22

ŞAHİN, Engin. "Realization of quantum mean filters with different sized on NEQR quantum images by QFT based operations." International Journal of Information Security Science, January 9, 2023. http://dx.doi.org/10.55859/ijiss.1210521.

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For some image processing algorithms such as edge detection and segmentation, filtering in the spatial domain is an important pre-processing to improve the quality of the image by removing the noise in the images. The time and memory requirements for processing also increase as the size of the images increases. Besides, excessive blurring of the image during noise removal operation can lead to excessive deterioration of image quality. Therefore, the balance between noise reduction and blur needs to be well adjusted. In this paper, a new quantum method for noise reduction on quantum images usin

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23

A Sharma, Vaidik. "Integrating Quantum Algorithms with Gravitational-Wave Metrology for Enhanced Signal Detection." International Journal of Innovative Science and Research Technology (IJISRT), June 8, 2024, 2189–206. http://dx.doi.org/10.38124/ijisrt/ijisrt24may1808.

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This study explores the integration of quantum algorithms, specifically Grover's algorithm, with quantum metrology to enhance the efficiency and sensitivity of gravitational-wave detection. By combining quantum matched filtering with precise parameter estimation techniques, the research aims to optimize sensor networks for the identification of gravitational waves. This integrated approach leverages the strengths of quantum superposition and entanglement to improve signal detection, reduce noise, and strategically place sensors. The findings demonstrate significant improvements in the sensitiv

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Zhang, Liang, Chaohan Cui, Jianchang Yan, Yanan Guo, Junxi Wang, and Linran Fan. "On-chip parallel processing of quantum frequency comb." npj Quantum Information 9, no. 1 (2023). http://dx.doi.org/10.1038/s41534-023-00725-5.

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AbstractThe frequency degree of freedom of optical photons has been recently explored for efficient quantum information processing. Significant reduction in hardware resources and enhancement of quantum functions can be expected by leveraging the large number of frequency modes. Here, we develope an integrated photonic platform for the generation and parallel processing of quantum frequency combs (QFCs). Cavity-enhanced parametric down-conversion with Sagnac configuration is implemented to generate QFCs with identical spectral distributions. On-chip quantum interference of different frequency

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25

Wilbur, Grant R., Ali Binai-Motlagh, Alison Clarke, et al. "Notch-filtered Adiabatic Rapid Passage for Optically-Driven Quantum Light Sources." APL Photonics, October 17, 2022. http://dx.doi.org/10.1063/5.0090048.

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We present a driving scheme for solid-state quantum emitters, referred to as Notch-filtered Adiabatic Rapid Passage (NARP), that utilizes frequency-swept pulses containing a spectral hole resonant with the optical transition in the emitter. NARP enables high-fidelity state inversion and exhibits robustness to variations in the laser pulse parameters, benefits that derive from the insensitivity of the condition for adiabatic evolution. NARP also offers the advantage of immunity to phonon-mediated excitation-induced dephasing when positively-chirped control pulses are used. Our resonant driving

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26

Shankarkumar, K. R., and Gokul Kumar. "Realization of Enhanced LMS Filter Using Carry Skip Adder And Quantum Dot Cellular Automation In VLSI For Removing Impulse Noises In Medical Image." Current Signal Transduction Therapy 14 (July 3, 2019). http://dx.doi.org/10.2174/1574362414666190703151222.

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: Filtering is an important step in the field of image processing to suppress the required parts or to remove any artifacts present in it. There are different types of filters like low pass, high pass, Band pass, IIR, FIR and adaptive filtering etc.., in these filters adaptive filters is an important filter because it is used to remove the noisy signal and images. Least Mean Square filter is a type of an adaptive filtering which is used to remove the noises present in the medical images. The working of LMS is based on the minimization of the difference between the error images using a closed l

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27

Huang, Lin, Jue Wang, Tong Chen, et al. "Radical and quantum interference-enhanced thermoelectric performance of the junctions based on porphyrin dimer molecules." Applied Physics Letters 124, no. 10 (2024). http://dx.doi.org/10.1063/5.0176856.

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Manipulating the π-electron magnetism of single-molecule junctions is an effective means to improve the electronic and spin-polarized thermoelectric transport properties. Here, using the density functional theory combined with the nonequilibrium Green's function method, we demonstrate that the electronic conductance (σ) of molecular junctions (MJs) can be significantly enhanced by organic radicals due to the shifting of resonant states. Moreover, we find that the spin-dependent quantum interference (SDQI) effects can be largely influenced by organic radicals. The SDQI effects result in nearly

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28

Shimizu, Koji, Wilson Agerico Diño, Hiroshi Nakanishi, et al. "Dynamical Quantum Filtering via Enhanced Scattering of para-H2 on the Orientationally Anisotropic Potential of SrTiO3(001)." Scientific Reports 10, no. 1 (2020). http://dx.doi.org/10.1038/s41598-020-62605-8.

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29

Wang, Shufang, and Zhiliang Li. "Low-Dimensionalization Enhancing the Thermoelectric Performance of Higher Manganese Silicide." Materials Lab 2 (2023). http://dx.doi.org/10.54227/mlab.20230013.

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Higher manganese silicide (HMS) is a candidate thermoelectric (TE) material at medium temperature due to its non-toxicity, abundance, and competitive price. The focus on improving the TE performance of HMS is to decrease the thermal conductivity. Low-dimensionalization techniques, such as nanocrystallization, embedding quantum dots (QDs) and thin film formation are effective strategies to decrease the lattice thermal conductivity by enhancing the phonon scattering on interfaces. Additionally, the Seebeck coefficients also can be improved due to the energy filtering effect via the interface bar

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30

Wang, Mengqi, Haoyu Sun, Xiangyu Ye, et al. "Self-aligned patterning technique for fabricating high-performance diamond sensor arrays with nanoscale precision." Science Advances 8, no. 38 (2022). http://dx.doi.org/10.1126/sciadv.abn9573.

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Efficient, nanoscale precision alignment of defect center creation in photonics structures in challenges the realization of high-performance photonic devices and quantum technology applications. Here, we propose a facile self-aligned patterning technique based on conventional engineering technology, with doping precision that can reach ~15 nm. We demonstrate this technique by fabricating diamond nanopillar sensor arrays with high consistency and near-optimal photon counts. The sensor array achieves high yield approaching the theoretical limit, and high efficiency for filtering sensors with dif

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31

Sworna Kokila, M. L., V. Bibin Christopher, and G. Ramya. "Enhanced power system fault detection using quantum‐AI and herd immunity quantum‐AI fault detection with herd immunity optimisation in power systems." IET Quantum Communication, July 25, 2024. http://dx.doi.org/10.1049/qtc2.12106.

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AbstractQuantum computing and deep learning have recently gained popularity across various industries, promising revolutionary advancements. The authors introduce QC‐PCSANN‐CHIO‐FD, a novel approach that enhances fault detection in electrical power systems by combining quantum computing, deep learning, and optimisation algorithms. The network, based on a Pyramidal Convolution Shuffle Attention Neural Network (PCSANN) optimised with the Coronavirus Herd Immunity Optimiser, shows promising results. Initially, historical datasets are used for fault detection. Preprocessing, which includes handlin

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Schuhmann, J., L. Lazzari, M. Morassi, et al. "Hybrid III-V/Silicon Quantum Photonic Device Generating Broadband Entangled Photon Pairs." PRX Quantum 5, no. 4 (2024). http://dx.doi.org/10.1103/prxquantum.5.040321.

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The demand for integrated photonic chips combining the generation and manipulation of quantum states of light is steadily increasing, driven by the need for compact and scalable platforms for quantum information technologies. While photonic circuits with diverse functionalities are being developed in different single material platforms, it has become crucial to realize hybrid photonic circuits that harness the advantages of multiple materials while mitigating their respective weaknesses, resulting in enhanced capabilities. Here, we demonstrate a hybrid III-V/silicon quantum photonic device com

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Wang, Ying, Dan Li, Xinying Sun, et al. "Effect of lattice distortion on spin admixture and quantum transport in organic devices with spin-orbit coupling." Chinese Physics B, March 20, 2024. http://dx.doi.org/10.1088/1674-1056/ad35ae.

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Abstract With an extended Su–Schrieffer–Heeger model and Green’s function method, the spin-orbit coupling (SOC) effects on spin admixture of electronic states and quantum transport in organic devices are investigated. The role of lattice distortion induced by the strong electron-lattice interaction in organics is clarified in contrast with a uniform chain. The results demonstrate an enhanced SOC effect on the spin admixture of frontier eigenstates by the lattice distortion at a larger SOC, which is explained by the perturbation theory. The quantum transport under the SOC is calculated for both

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Lee, Hansol, Hoimin Kim, Haedam Jin, et al. "“Popping the Ion‐Basket”: Enhancing Thermoelectric Performance of Conjugated Polymers by Blending with Latently Dissociable Perovskite Quantum Dots." Advanced Science, January 22, 2025. https://doi.org/10.1002/advs.202412663.

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AbstractA novel additive method to boost the Seebeck coefficient of doped conjugated polymers without a significant loss in electrical conductivity is demonstrated. Perovskite (CsPbBr3) quantum dots (QDs) passivated by ligands with long alkyl chains are mixed with a conjugated polymer in a solution phase to form polymer‐QD blend films. Solution sequential doping of the blend film with AuCl3 solution not only doped the conjugated polymer but also decomposed the QDs, resulting in a doped conjugated polymer film embedded with separated ions dissociated from the QDs. For the doped polymer‐molten Q

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Torrijos‐Morán, Luis, Diego Pérez‐Galacho, and Daniel Pérez‐López. "Silicon Programmable Photonic Circuits Based on Periodic Bimodal Waveguides." Laser & Photonics Reviews, September 29, 2023. http://dx.doi.org/10.1002/lpor.202300505.

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AbstractProgrammable photonic circuits are dense assemblies of waveguide meshes in which the flow of light can be reconfigured by software to implement a wide variety of functions, ranging from radiofrequency filtering to optical computing. However, most programmable architectures to date rely on rather bulky Mach‐Zehnder interferometers (MZIs), which are not suitable for large‐scale and high‐density integration. Here, an alternative approach to MZI‐based programmable photonic circuits by using slow‐light‐enhanced periodic bimodal waveguides (PBWs) as programmable units is presented. This stud

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Zambon, P. "Enhanced DQE and sub-pixel resolution by single-event processing in counting hybrid pixel electron detectors: A simulation study." Frontiers in Physics 11 (February 7, 2023). http://dx.doi.org/10.3389/fphy.2023.1123787.

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Detective quantum efficiency (DQE) is a prominent figure of merit for imaging detectors, and its optimization is of fundamental importance for the efficient use of the experimental apparatus. In this work, I study the potential improvement offered by data processing on a single-event basis in a counting hybrid pixel electron detector (HPD). In particular, I introduce a simple and robust method of single-event processing based on the substitution of the original cluster of pixels with an isotropic Gaussian function. Key features are a better filtering of the noise power spectrum (NPS) and readi

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Nadtochiy, Andriy, Vasyl Kuryliuk, Viktor Strelchuk, Oleg Korotchenkov, Pei-Wen Li, and Sheng-Wei Lee. "Enhancing the Seebeck effect in Ge/Si through the combination of interfacial design features." Scientific Reports 9, no. 1 (2019). http://dx.doi.org/10.1038/s41598-019-52654-z.

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Abstract Due to their inherent physical properties, thin-film Si/SiGe heterostructures have specific thermal management applications in advanced integrated circuits and this in turn is essential not only to prevent a high local temperature and overheat inside the circuit, but also generate electricity through the Seebeck effect. Here, we were able to enhance the Seebeck effect in the germanium composite quantum dots (CQDs) embedded in silicon by increasing the number of thin silicon layers inside the dot (multi-fold CQD material). The Seebeck effect in the CQD structures and multi-layer boron

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Gong, Peiwei, Changmin Qi, Dandan Wang, et al. "Fluorinated graphene quantum dots with long-term lubrication for visual drug loading and joint inflammation therapy." Friction, March 31, 2023. http://dx.doi.org/10.1007/s40544-022-0714-6.

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AbstractOsteoarthritis (OA) treatment mainly relies on developing new drugs or nanocarriers, while little attention is paid to building novel remedial mode and improving drug loading efficiency. This work reports an integrated nanosystem that not only realizes visual drug loading and release, but also achieves enhanced lubrication and effective joint inflammation therapy based on fluorinated graphene quantum dots (FGQDs). Oxygen introduction promotes FGQDs outstanding water-stability for months, and layered nano-sized structure further guarantees excellent lubricating properties in biomimetic

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Liang, Pan, Yang Wang, Lin Cheng, et al. "Impact of photo-irradiation on the optical and spin properties of chiral CdS quantum dot films." Applied Physics Letters 126, no. 15 (2025). https://doi.org/10.1063/5.0268396.

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Chiral quantum dots (QDs) are expected to play a significant role in chiral molecular recognition, spin-selective filtering for charge transport, and various other fields. Photo-irradiation can enhance the photoluminescence (PL) of chiral CdSe QD films, which serves as a convenient method to modulate the optical properties. However, the effects of photo-irradiation on the absorption and spin properties of chiral QDs remain unclear. In this study, we investigate the influence of photo-irradiation on the PL, absorption, and spin properties of chiral L/D-cysteine-capped CdS QD films. Under the ir

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Ali, Shahjad, and Md Ehesan Ali. "Broken edge spin-symmetry induces spin-polarized current in graphene nanoribbon." Journal of Physics D: Applied Physics, February 16, 2024. http://dx.doi.org/10.1088/1361-6463/ad2a12.

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Abstract Zig-zag graphene nanoribbons (ZGNRs) are known to possess spin moments at the hydrogen-terminated edge carbon atoms, thus the spin-polarized electron transmission is expected while the current is longitudinally passed through the ZGNRs. However, in pristine ZGNRs, the spin-polarized transmission is not observed due to symmetric anti-parallel distributions of the spin densities between the edges. Here, the hypothesis is, any physical or chemical process that breaks such anti-parallel spin-symmetry can induce spin-polarized transmission in the ZGNRs. In this work, we have established th

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Shirley, Matthew A., Valeria Arango-Aliaga, Ankit Patel, Brian E. Oeffinger, John Eisenbrey, and Margaret A. Wheatley. "Development of a Polymer Ultrasound Contrast Agent Incorporating Nested Carbon Nanodots." Ultrasonic Imaging, September 22, 2024. http://dx.doi.org/10.1177/01617346241279112.

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Polymer microbubbles have garnered broad interest as potential theranostic agents. However, the capabilities of polymer MBs can be greatly enhanced, particularly regarding the imaging performance and functional versatility of the platform. This study investigates integrating fluorescent carbon nanodots within polylactic acid (PLA) microbubbles. First, the formulations are characterized by their size, microbubble counts, zeta potential, and resonance frequency. Then, the fluorescence capabilities, nanoparticle loading, and acoustic capabilities are examined. Unmodified (U-), carboxylated (C-),

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Husel, Lukas, Julian Trapp, Johannes Scherzer, et al. "Cavity-enhanced photon indistinguishability at room temperature and telecom wavelengths." Nature Communications 15, no. 1 (2024). http://dx.doi.org/10.1038/s41467-024-48119-1.

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AbstractIndistinguishable single photons in the telecom-bandwidth of optical fibers are indispensable for long-distance quantum communication. Solid-state single photon emitters have achieved excellent performance in key benchmarks, however, the demonstration of indistinguishability at room-temperature remains a major challenge. Here, we report room-temperature photon indistinguishability at telecom wavelengths from individual nanotube defects in a fiber-based microcavity operated in the regime of incoherent good cavity-coupling. The efficiency of the coupled system outperforms spectral or tem

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Zhu, Xiaotian, Changyue Wang, Brent E. Little, et al. "Enhanced efficiency of correlated photon pairs generation in silicon nitride with a low-loss 3D edge coupler." APL Photonics 9, no. 6 (2024). http://dx.doi.org/10.1063/5.0198693.

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We demonstrate the generation of correlated photon pairs by using a hybrid integrated quantum photonic platform, where the dual-layer platform consists of a high-index doped silica glass (HDSG) layer to accommodate low-loss linear components and an SiN-based layer to accommodate the photon source. Leveraging the low-loss fiber coupling to the HDSG waveguide and the high nonlinearity of the SiN waveguide, we experimentally realize integrated source of photon pairs with high heralding efficiency. The directly measured photon pair rate is up to 87 KHz (corresponding to 1.74 × 10−3 pairs per pulse

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Tomoshige, Yoshitsugu, Mamoru Tamura, Tomohiro Yokoyama, and Hajime Ishihara. "Enhanced photoluminescence of strongly coupled single molecule-plasmonic nanocavity: analysis of spectral modifications using nonlocal response theory." Nanophotonics, February 17, 2025. https://doi.org/10.1515/nanoph-2024-0580.

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Abstract Plasmonic nanocavities with highly localized fields in their nanogaps significantly enhance light–matter interactions at the nanoscale, surpassing the diffraction limit. Strong coupling between a plasmonic nanocavity and a molecule forms hybrid upper and lower branch states, resulting in Rabi splitting (RS) in optical spectra. However, scattering and absorption spectra often fail to unambiguously distinguish whether the double peaks arise from energy transparency or RS. In contrast, photoluminescence (PL) clearly reveals the quantum state of a molecule coupled with a plasmon by filter

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Park, Soyoung, Satoshi Hiura, Hiroto Kise, Junichi Takayama, Kazuhisa Sueoka, and Akihiro Murayama. "Room-temperature electric field control of spin filtering efficiency for enhanced modulation of optical spin polarization in a defect-functional 0D-2D hybrid nanostructure." Nanoscale, 2023. http://dx.doi.org/10.1039/d3nr03438k.

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In order to accomplish spin-based photoelectric information processing, it is necessary to modulate electron spin polarization in III-V semiconductor quantum dots (QDs) using an electric field. However, there is a...

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Ollearo, Riccardo, Xiao Ma, Hylke B. Akkerman, et al. "Vitality surveillance at distance using thin-film tandem-like narrowband near-infrared photodiodes with light-enhanced responsivity." Science Advances 9, no. 7 (2023). http://dx.doi.org/10.1126/sciadv.adf9861.

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Remote measurement of vital sign parameters like heartbeat and respiration rate represents a compelling challenge in monitoring an individual’s health in a noninvasive way. This could be achieved by large field-of-view, easy-to-integrate unobtrusive sensors, such as large-area thin-film photodiodes. At long distances, however, discriminating weak light signals from background disturbance demands superior near-infrared (NIR) sensitivity and optical noise tolerance. Here, we report an inherently narrowband solution–processed, thin-film photodiode with ultrahigh and controllable NIR responsivity

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Sailesh, Conjeti1 and Bijay Kumar Rout. "STRATEGY FOR ELECTROMYOGRAPHY BASED DIAGNOSIS OF NEUROMUSCULAR DISEASES FOR ASSISTIVE REHABILITATION." September 22, 2013. https://doi.org/10.5121/ijbb.2013.3303.

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International Journal on Bioinformatics & Biosciences (IJBB) Vol.3, No.3, September 2013 DOI: 10.5121/ijbb.2013.3303 25 STRATEGY FOR ELECTROMYOGRAPHY BASED DIAGNOSIS OF NEUROMUSCULAR DISEASES FOR ASSISTIVE REHABILITATION Sailesh Conjeti1 and Bijay Kumar Rout2 1Department of Electrical and Electronics Engineering, Birla Institute of Technology and Science, Pilani, Rajasthan, India. 2Department of Mechanical Engineering, Birla Institute of Technology and Science, Pilani, Rajasthan, India. ABSTRACT Assistive Rehabilitation aims at developing procedures and therapies which reinstate lost body

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sprotocols. "Integration of screening and identifying ligand(s) from medicinal plant extracts based on target recognition by using NMR spectroscopy." January 3, 2015. https://doi.org/10.5281/zenodo.13696.

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Authors: Yalin Tang, Qian Shang, Junfeng Xiang, Qianfan Yang, Qiuju Zhou, Lin Li, Hong Zhang, Qian Li, Hongxia Sun, Aijiao Guan, Wei Jiang & Wei Gai ### Abstract This protocol presents the screening of ligand(s) from medicinal plant extracts based on target recognition by using NMR spectroscopy. A detailed description of sample preparation and analysis process is provided. NMR spectroscopies described here are 1H NMR, diffusion-ordered spectroscopy (DOSY), relaxation-edited NMR, 1H–13C HSQC and HMBC. This method includes three steps: First, investigate the NMR spectroscopy properties of ta

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