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Coherence - Science topic
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Publications related to Coherence (10,000)
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Although Chinese undergraduate students majoring in English as a foreign language (EFL) need to master English academic writing, they still have some challenges in learning English academic writing. ChatGPT has gradually been applied to academic writing, which play an important role in improving students' academic writing. Therefore, the purpose of...
By using the ALD method, we have excellent control over the thickness of the layers in the surface layer. ALD can be used to deposit very thin uniform and coherent hydrophobic layers like the layer we used in this research Al2O3. Al2O3 layers deposited by ALD can increase the water contact angle from about 70 degrees (for untreated surfaces) to ove...
This paper proposes a methodological approach to analyse stone inscriptions with complex interpretations and unclear contexts. A workflow is proposed to characterise the origin of the objects and a methodology to improve the visualisation and characterise their carvings and symbols. As a case study that embodies all these issues, the inscription of...
We present a theoretical framework for generating squeezed microwave and magnonic frequency combs achieved through the parametric coupling of magnon modes to a cavity. This coupling exploits the intrinsic non-linear magnon modes of a ferromagnetic sphere. When subjected to a strong, coherent microwave field, we show that the system exhibits spontan...
We investigate the classical aspects of quantum theory and under which description quantum theory does appear classical. Although such descriptions or variables are known as “ontological” or “hidden,” they are not hidden at all but are dual classical states (in the sense of the general classical–quantum duality of nature). We analyze and interpret...
AI becomes increasingly vital for telecom industry, as the burgeoning complexity of upcoming mobile communication networks places immense pressure on network operators. While there is a growing consensus that intelligent network self-driving holds the key, it heavily relies on expert experience and knowledge extracted from network data. In an effor...
This paper introduces an innovative morphing method leveraging Radial-Sign descriptors for monotonic spinner shapes, offering a robust, efficient, and computationally refined solution to shape blending challenges. The method encodes two shapes using radial distances and angular sign variations relative to the centroids, respectively, producing comp...
The generation mechanism for ion acoustic solitons due to speeding orbital debris in warm isothermal ionospheric plasma with the background magnetic field oriented at an arbitrary angle to the debris trajectory is analyzed. It is found that the fluctuations in the floating potential, which the debris acquires due to charging, can be amplified into...
Photonic band-edge liquid crystal (LC) lasers are an exciting field of research, offering potential in a range of applications from medical imaging to holographic projection. Much work has been done on improving the performance of LC lasers. However, due to historical limitations in pumping techniques, very little experimental work into the tempora...
Text-to-Image (TTI) diffusion models have demonstrated remarkable capabilities in generating high-quality images from textual descriptions. However, these models often inherit and amplify societal biases present in their training data, particularly concerning sensitive attributes such as gender, race, and age. This thesis introduces Debias Diffusio...
The simultaneous ground-state cooling and the quantum synchronization of multiple mechanical oscillators are very important in the study of the quantum coherence of the optomechanical system with multiple mechanical modes. In this paper, we propose a scheme for investigating the simultaneous ground-state cooling and the quantum synchronization of t...
In this paper, we present the performance of 40 Gb/s polarization division multiplexed-differential quadrature phase shift keying (PDM-DQPSK) optical label switching system with frequency swept coherent detected spectral amplitude code labels in simulation. In this system, the payload consists of two 10 Gbaud channels which are orthogonally polariz...
The edge region of the recently discovered fast ion-regulated enhancement mode (FIRE mode) (Han and Park et al 2022 Nature 609 269–275), which primarily operates in the unfavorable ion ∇B drift configuration, is investigated in detail for the first time. An ion temperature pedestal is identified, while the edge electron density profile remains at l...
Tanulmányunkban egy szemantikus keresést támogató rendszert mutatunk be magyar bírósági határozatokon, amely képes az azonos tényállású ügyek hatékony felismerésére és visszakeresésére. A kiértékelési rendszerünk alappillérét az úgynevezett "tényállásvázlatok" képezik, amelyek tömören foglalják össze egy-egy ügy kulcsfontosságú tényeit, ez-által le...
This study investigates the microstructural evolution during the coprecipitation of metastable γ″ (D022‐Ni3Nb) particles within a supersaturated γ matrix in commercial IN625 Ni‐based superalloy. The research aims to comprehensively understand the morphological evolution and fraction distribution of precipitate phases to enhance material strength an...
Optical photons play unique role in transmitting information over long distances. Photonic links by the optical fiber networks compose the backbone of today’s global internet. Such fiber optics can also provide the most cost-effective quantum channels to distribute quantum information across distant stationary nodes in future large-scale quantum ne...
Internal learning‐based video inpainting methods have shown promising results by exploiting the intrinsic properties of the video to fill in the missing region without external dataset supervision. However, existing internal learning‐based video inpainting methods would produce inconsistent structures or blurry textures due to the insufficient util...
Among the most iconic features of classical dissipative dynamics are persistent limit-cycle oscillations and critical slowing down at the onset of such oscillations, where the system relaxes purely algebraically in time. On the other hand, quantum systems subject to generic Markovian dissipation decohere exponentially in time, approaching a unique...
In this article, we experimentally demonstrate an eavesdropper's (Eve's) information gain by exploiting the breakdown flash generated by the single photon avalanche detector (SPAD) used in coherent one-way quantum key distribution (COW-QKD) setup. Unlike prior studies focusing on the device-level characterization of backflash photons, this work qua...
Current evaluations of synthetic tabular data mainly focus on how well joint distributions are modeled, often overlooking the assessment of their effectiveness in preserving realistic event sequences and coherent entity relationships across columns.This paper proposes three evaluation metrics designed to assess the preservation of logical relations...
Quantum computers with a limited qubit connectivity require inserting SWAP gates for qubit routing, which increases gate execution errors and the impact of environmental noise due to an overhead in circuit depth. In this work, we benchmark various routing techniques considering random quantum circuits on one-dimensional and square lattice connectiv...
The central molecular zone (CMZ) of our Galaxy exhibits widespread emission from SiO and various complex organic molecules (COMs), yet the exact origin of such emission is uncertain. Here we report the discovery of a unique class of long ($>$0.5 pc) and narrow ($<$0.03 pc) filaments in the emission of SiO 5$-$4 and eight additional molecular lines,...
Time-multiplexed spinwave Ising Machines have unveiled a route towards miniaturized and low-cost combinatorial optimization solvers but are constrained in the number of spins by nonlinear spinwave dispersion. In contrast, surface acoustic waves offer an intrinsically linear dispersion and high thermal stability. Here, we demonstrate an all-to-all,...
The impact of quantum mechanics on thermodynamics, particularly on the principles and designs of heat machines (HM), has been limited by the incompatibility of quantum coherent evolution with the dissipative, open-system nature of all existing HM and their basic structure, which has not been radically changed since Carnot. We have recently proposed...
Quantum simulations of Hubbard models with ultracold atoms rely on the exceptional control of coherent motion provided by optical lattices. Here we demonstrate enhanced tunability using an optical superlattice in a fermionic quantum gas microscope, evidenced by long-lived coherent double-well oscillations, next-nearest-neighbor quantum walks in a s...
Achieving consistency in immersive learning case descriptions is essential but challenging due to variations in research focus, methodology, and researchers' background. We address these challenges by leveraging the Immersive Learning Case Sheet (ILCS), a methodological instrument to standardize case descriptions, that we applied to an immersive le...
Objective: Longitudinal studies have shown that most individuals can stay well in response to potential traumatic events (PTEs). However, the mechanisms underlying such resilience are still unclear. Method: This study integrates Bonanno’s resilience model (Bonanno, 2004) with the salutogenic approach (Antonovsky, 1979) to investigate the associatio...
The analytical propagation functions for partially coherent vortex cosine-hyperbolic-Gaussian beams (PCvChGB) propagating through uniaxial crystal orthogonal to the optical axis are derived, and numerical examples analyze their spreading properties. It's shown that the intensity distribution of the PCvChGB is astigmatic and related to the initial b...
We prove dynamical coherence for partial hyperbolic symplectomorphism in dimension 4 whose stable and unstable bundles are C^1.
A finite-dimensional Hilbert space is usually described by using an orthonormal basis, but a more general description can be obtained by using a tight frame. The frame-dependent coherence, defined by following the analogy with the basis-dependent coherence, allows us to define the coherence with respect to several orthonormal bases considered simul...
There is a growing interest in developing drugs with a general geroprotective effect, aimed at slowing down aging. Several compounds have been shown to increase the lifespan and reduce the incidence of age-related diseases in model organisms. Translating these results is challenging, due to the long lifespan of humans. To address this, we propose u...
Research explores the concept of environmental capital among the residents of the Masovia region, analysing their attitudes and behaviours towards the environment. Environmental capital, defined as collective and individual choices that enhance environmental sustainability, is examined across three dimensions: individual, collective, and socio-poli...
Industrially applied bioelectrochemical systems require long-term stable operation, and hence the control of biofilm accumulation on the electrodes. An optimized application of biofilm control mechanisms presupposes on-line, in-situ monitoring of the accumulated biofilm. Heat transfer sensors have successfully been integrated into industrial system...
Graphene, with its two-dimensional carbon structure, exhibits unique quantum properties that are crucial for quantum computing. In this paper, we investigate the influence of an external electromagnetic field on quantum coherence and entanglement between two qubits in graphene lattices. Our findings show that an electromagnetic field with high fiel...
While quantum master equations (QMEs) are the primary workhorse in quantum information science, quantum optics, spectroscopy, and quantum thermodynamics, bringing an arbitrary N-level QME into Lindbladian form and verifying complete positivity of the associated quantum dynamical map remain open challenges for N ≥ 3. We explore and implement two ind...
X‐ray detection at X‐ray free‐electron lasers is challenging in part due to the XFEL's extremely short and intense X‐ray pulses. Experimental measurements are further complicated by the large fluctuations inherent to the self‐amplified spontaneous emission process producing the X‐rays. At the Linac Coherent Light Source the ePix10ka2M detector offe...
How to improve the rendering efficiency and realism of light field images remains a major challenge. This paper proposes a rendering approach to efficiently generate photorealistic light field images. Firstly, the next-generation model optimization technique is used to transform the complex high-polygon model (HPM) into the low-polygon model (LPM)....
Nanopillars are widely used for various applications and require accurate shape characterization to enhance their performance and optimize fabrication processes. In this paper, we employ coherent Fourier scatterometry (CFS) combined with rigorous three-dimensional finite-difference time-domain simulations to accurately determine the shapes of nanop...
From medical diagnosis to autonomous vehicles, critical applications rely on the integration of multiple heterogeneous data modalities. Multimodal Variational Autoencoders offer versatile and scalable methods for generating unobserved modalities from observed ones. Recent models using mixturesof-experts aggregation suffer from theoretically grounde...
A waveguide-based optical parametric oscillator for coherent Raman scattering applications is presented, exploiting four-wave mixing in a silicon nitride waveguide. Benefiting from its long propagation length of 20 mm in combination with a narrowband pump laser, idler pulses with an energy of up to 210 pJ and a spectral bandwidth down to 11.2 \docu...
Digital transformation has become a strategic imperative for organizations across industries, necessitating the formulation of coherent digital business strategies. This study investigates the dimensions and types of digital business strategy, aiming to provide a comprehensive understanding of the critical areas for strategic decision-making in dig...
Interference effects are usually observed by intensity measurement. Path indistinguishability by quantum complementarity principle requires projection of the interfering fields into a common indistinguishable mode before detection. On the other hand, the essence of wave interference is the addition of amplitudes of the interfering fields. Therefore...
In this paper, we introduce WorldSense, the first benchmark to assess the multi-modal video understanding, that simultaneously encompasses visual, audio, and text inputs. In contrast to existing benchmarks, our WorldSense has several features: (i) collaboration of omni-modality, we design the evaluation tasks to feature a strong coupling of audio a...
Social innovation (SI) research still struggles with problems of definition (Edwards-Schachter and Wallace 2017) and lacks a shared analytical framework and measurement methods. This lack of coherence is reflected in two bold, diametrically opposing views on SI research. "SI is an eclectic area, since differences still prevail also within the same...
Large Language Models (LLMs) excel at reasoning and planning when trained on chainof-thought (CoT) data, where the step-by-step thought process is explicitly outlined by text tokens. However, this results in lengthy inputs where many words support textual coherence rather than core reasoning information, and processing these inputs consumes substan...
Maintaining semantic consistency over extended text sequences remains a fundamental challenge in long-form text generation, where conventional training methodologies often struggle to prevent contextual drift and coherence degradation. A novel gradient modulation approach is introduced, designed to adjust parameter updates dynamically in response t...
This document is crafted to aid in the development of a comprehensive supplementary document for the article "Geochemistry, provenance, and tectonic setting of Paleoproterozoic metasedimentary and metavolcanic units of the Estonian Alutaguse region, eastern Fennoscandia". Its purpose is to elaborate on the geochemical details mentioned in the main...
This is the third in a series of papers highlighting the applications of reduced and coreduced modules. Let $R$ be a commutative unital ring and $I$ be an ideal of $R$. We show in different settings that $I$-reduced (resp. $I$-coreduced) $R$-modules facilitate the computation of local cohomology (resp. local homology) and provide conditions under w...
When faced with noisy environments, listeners perform auditory scene analysis, which allows them to parse the auditory target from concurrent interferences. Stream segregation involves organizing similar sound waves into a coherent stream, while distinguishing dissimilar acoustic components and attributing them to distinct sources. Two event-relate...
Social support plays an important role in the flourishing of the adolescents. However, little is known about the roles of self-compassion and sense of coherence in this relationship. The main objective of the current study was to examine the associations between social support and flourishing, through serial mediation analysis that included self-co...
The 3D Fermi surface, along with a chiral in-gap state and a Majorana zero energy state, is suggested to play a crucial role in the topologically nontrivial superconductivity in UTe$_2$. However, conflicting experimental observations of the 2D Fermi surface raise questions about topological superconductivity. By combining ab initio many-body pertur...
We present Universal Sparse Autoencoders (USAEs), a framework for uncovering and aligning interpretable concepts spanning multiple pretrained deep neural networks. Unlike existing concept-based interpretability methods, which focus on a single model, USAEs jointly learn a universal concept space that can reconstruct and interpret the internal activ...
Large Vision-Language Models (LVLMs) can reason effectively over both textual and visual inputs, but they tend to hallucinate syntactically coherent yet visually ungrounded contents. In this paper, we investigate the internal dynamics of hallucination by examining the tokens logits rankings throughout the generation process, revealing three key pat...
A turnkey phase-sensitive swept-source optical coherence tomography (OCT) system requires stabilization of both the swept source and main signal interferometer. We have provided stable clocking and triggering of a 1050 nm swept micro-electromechanical system (MEMS) vertical cavity surface emitting laser (VCSEL) by mounting a solid clock etalon and...
In this work we revisit vast amount of existing data on physical properties of Ti-Zr-Nb-(Cu,Ni,Co) glassy alloys over a broad range of concentrations (from the high entropy range to that of conventional Cu-, Ni- or Co-rich alloys). By using our new approach based on total content of late transition metal(s), we derive a number of physical parameter...
We consider the problem of efficiently representing casually captured monocular videos in a spatially- and temporally-coherent manner. While existing approaches predominantly rely on 2D/2.5D techniques treating videos as collections of spatiotemporal pixels, they struggle with complex motions, occlusions, and geometric consistency due to absence of...
Optomechanical systems subjected to environmental noise give rise to rich physical phenomena. We investigate entanglement between a mechanical oscillator and the reflected coherent optical field in a general, not necessarily Markovian environment. For the input optical field, we consider stationary Gaussian states and frequency dependent squeezing....
Though there is robust literature on the history of the advice genre, Reddit is an unrecognized but significant medium for the genre. This lack of attention, in part, stems from the lack of a coherent timeline and framework for understanding the emergence of dozens of advice-related subreddits. Noting the challenges of Reddit historiography, I trac...
One of the simplest and least resource-intensive methods to suppress decoherence for qubit operations, namely, dynamical decoupling (DD), is investigated for a broad range of realistic noise sources with time-retarded feedback. By way of example, the Carr-Purcell-Meiboom-Gill sequence is analyzed in a numerically rigorous manner accounting also for...
Point-to-multipoint (P2MP) coherent pluggable transceivers based on digital subcarrier multiplexing (DSCM) have been proposed as a promising technology to reduce the costs of optical transport networks. However, to establish the P2MP trees, bidirectional multicast functionality is required at the optical nodes. While conventional broadcast-and-sele...
Recent discoveries from time-domain surveys are defying our expectations for how matter accretes onto supermassive black holes (SMBHs). The increased rate of short-timescale, repetitive events around SMBHs, including the recently discovered quasi-periodic eruptions1, 2, 3, 4–5, are garnering further interest in stellar-mass companions around SMBHs...
The geometric scale of real reservoirs is immense, and their boundaries are intricate. Consequently, two-dimensional numerical simulations of the entire reservoir cannot accurately capture the three-dimensional flow characteristics in localized regions. Conversely, comprehensive three-dimensional simulations are often unfeasible due to the substant...
Objective. Entrainment has been considered as a potential mechanism underlying the facilitatory effect of rhythmic neural stimulation on neurorehabilitation. The inconsistent effects of brain stimulation on neurorehabilitation found in the literature may be caused by the variability in neural entrainment. To dissect the underlying mechanisms and op...
2D profiles of electron density and neutral temperature are inferred from multi-delay coherence imaging spectroscopy data of divertor plasmas using a non-linear inversion technique. The inference is based on imaging the spectral line-broadening of Balmer lines and can differentiate between the Doppler and Stark broadening components by measuring th...
In the race towards "beyond 6G" telecommunication platforms, magnonics emerges as a promising solution due to its wide tunability within the FR3 band (7-24 GHz). So far, however, the need for an external magnetic bias field to allow the coherent excitation of spin waves has been a major bottleneck. Conventional bulky electromagnets are power-intens...