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Despite the success of diffusion models (DMs), we still lack a thorough understanding of their latent space. To understand the latent space $\mathbf{x}_t \in \mathcal{X}$, we analyze them from a geometrical perspective. Our approach…

Computer Vision and Pattern Recognition · Computer Science 2023-10-30 Yong-Hyun Park , Mingi Kwon , Jaewoong Choi , Junghyo Jo , Youngjung Uh

The propagation of light in a resonant atomic vapor can \textit{a priori} be thought of as a multiple scattering process, in which each scattering event redistributes both the direction and the frequency of the photons. Particularly, the…

Plasma supports electromagnetic waves propagation for frequencies higher than plasma frequency but features dielectric permittivity less than 1. This property leads to photon density of states (DOS) lower than in vacuum and should result in…

Optics · Physics 2023-03-21 S. V. Gaponenko , D. V. Guzatov , D. V. Novitsky

We theoretically investigate how the enhancement of the radiative decay rate of a spontaneous emitter provided by coupling to an optical antenna is modified when this "superemitter" is introduced into a complex photonic environment that…

Optics · Physics 2012-12-20 Martin Frimmer , A. Femius Koenderink

Multiple scattering of waves in disordered media is a nightmare whether it be for detection or imaging purposes. The best approach so far to get rid of multiple scattering is optical coherence tomography. It basically combines confocal…

We present an optical picture of linear-optics superradiance, based on a single scattering event embedded in a dispersive effective medium composed by the other atoms. This linear-dispersion theory is valid at low density and in the…

Atomic Physics · Physics 2021-02-05 P. Weiss , A. Cipris , R. Kaiser , I. M. Sokolov , W. Guerin

Image restoration, which aims to recover high-quality images from their corrupted counterparts, often faces the challenge of being an ill-posed problem that allows multiple solutions for a single input. However, most deep learning based…

Computer Vision and Pattern Recognition · Computer Science 2024-04-16 Wenyi Lian , Wenjing Lian , Ziwei Luo

The experimental characterization of multi-photon quantum interference effects in optical networks is essential in many applications of photonic quantum technologies, which include quantum computing and quantum communication as two…

Quantum Physics · Physics 2020-07-14 Álvaro Navarrete , Wenyuan Wang , Feihu Xu , Marcos Curty

Dynamics light scattering (DLS) is a widely used techniques to characterize dynamics in soft phases. Evanescent Wave DLS refers to the case of total internal reflection DLS that probes near interface dynamics. We here investigate the use of…

Soft Condensed Matter · Physics 2021-06-24 Antonio Giuliani , Benoit Loppinet

Coherent wave propagation in disordered media gives rise to many fascinating phenomena as diverse as universal conductance fluctuations in mesoscopic metals and speckle patterns in light scattering. Here, the theory of electromagnetic wave…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Aris L. Moustakas , Harold U. Baranger , Leon Balents , Anirvan M. Sengupta , Steven H. Simon

Isolated photons with high transverse energy have been studied in deep inelastic $ep$ scattering with the ZEUS detector at HERA, using an integrated luminosity of $326\,$ pb$^{-1}$ in the range of exchanged-photon virtuality $10 - 350$…

High Energy Physics - Experiment · Physics 2017-12-13 ZEUS Collaboration , H. Abramowicz , I. Abt , L. Adamczyk , M. Adamus , R. Aggarwal , S. Antonelli , V. Aushev , Y. Aushev , O. Behnke , U. Behrens , A. Bertolin , I. Bloch , I. Brock , N. H. Brook , R. Brugnera , A. Bruni , P. J. Bussey , A. Caldwell , M. Capua , C. D. Catterall , J. Chwastowski , J. Ciborowski , R. Ciesielski , A. M. Cooper-Sarkar , M. Corradi , R. K. Dementiev , R. C. E. Devenish , S. Dusini , B. Foster , G. Gach , E. Gallo , A. Garfagnini , A. Geiser , A. Gizhko , L. K. Gladilin , Yu. A. Golubkov , G. Grzelak , M. Guzik , C. Gwenlan , O. Hlushchenko , D. Hochman , R. Hori , Z. A. Ibrahim , Y. Iga , M. Ishitsuka , N. Z. Jomhari , I. Kadenko , S. Kananov , U. Karshon , P. Kaur , D. Kisielewska , R. Klanner , U. Klein , I. A. Korzhavina , A. Kotański , N. Kovalchuk , H. Kowalski , B. Krupa , O. Kuprash , M. Kuze , B. B. Levchenko , A. Levy , M . Lisovyi , E. Lobodzinska , B. Löhr , E. Lohrmann , A. Longhin , O. Yu. Lukina , J. Malka , A. Mastroberardino , F. Mohamad Idris , N. Mohammad Nasir , V. Myronenko , K . Nagano , Yu. Onishchuk , E. Paul , W. Perlański , N. S. Pokrovskiy , A. Polini , M. Przybycień , M. Ruspa , D. H. Saxon , M. Schioppa , U. Schneekloth , T. Schörner-Sadenius , L. M. Shcheglova , O. Shkola , Yu. Shyrma , I. O. Skillicorn , W. Słomiński , A. Solano , L. Stanco , N. Stefaniuk , A. Stern , P. Stopa , J. Sztuk-Damb ietz , E. Tassi , K. Tokushuku , J. Tomaszewska , T. Tsurugai , M. Turcato , O. Turkot , T. Tymieniecka , A. Verbytskyi , W. A. T. WanAbdullah , K. Wichmann , M. Wing , S. Yamada , Y. Yamazaki , A. F. Żarnecki , L. Zawiejski , O. Zenaiev , B. O. Zhautykov

We discuss a new solution of the Kompaneets-equation for physical situations in which low frequency photons, forming relatively narrow spectral details, are Compton scattered in an isotropic, infinite medium with an intense ambient…

Astrophysics · Physics 2009-11-13 J. Chluba , R. A. Sunyaev

Frequency domain super-heterodyne laser light scattering is utilized in a low angle integral measurement configuration to determine flow and diffusion in charged sphere suspensions showing moderate to strong multiple scattering. We…

Several LHC experiments exploit the high acceptance in the forward region. Most of them use the possibility of measuring the intact proton in an elastic event. This approach can enhance the purity of selecting jet-gap-jet events, leading to…

High Energy Physics - Experiment · Physics 2024-01-22 Anna Fehérkuti

The relative roles of multiple electron scattering and in-molecule free-space propagation in transmission electron microscopy of small molecules are discussed. It is argued that while multiple scattering tends to have only a moderate effect…

Image and Video Processing · Electrical Eng. & Systems 2019-12-02 T. E. Gureyev , H. M. Quiney , A. Kozlov , L. J. Allen

As light propagates along a waveguide, a fraction of the field can be reflected by Rayleigh scatterers. In high-quality-factor whispering-gallery-mode microresonators, this intrinsic backscattering is primarily caused by either surface or…

We study the effect of multiple scatterings on the propagation of hard partons and the production of jet-bremsstrahlung photons inside a dense medium in the framework of deep-inelastic scattering off a large nucleus. We include the momentum…

Nuclear Theory · Physics 2015-05-20 Guang-You Qin , Abhijit Majumder

We study the electron-photon deep inelastic scattering at small Bjorken variable x in the framework of holographic QCD, employing the Pomeron exchange to describe the involved strong interaction. With the Brower-Polchinski-Strassler-Tan…

High Energy Physics - Phenomenology · Physics 2018-08-03 Akira Watanabe , Hsiang-nan Li

Imaging the propagation of light in time and space is crucial in optics, notably for the study of complex media. We here demonstrate the passive measurement of time-dependent Green's functions between every point at the surface of a…

This paper describes the use of Feynman photon path integrals to compute the probability of detecting reflected, diffracted, and scattered photons at different points in space after interacting with conduction electrons. Five examples are…

Quantum Physics · Physics 2023-09-19 Stephen E. Derenzo