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Classical nonlocality in conducting nanostructures has been shown to dramatically alter the linear optical response, by placing a fundamental limit on the maximum field enhancement that can be achieved. This limit directly extends to all…

Mesoscale and Nanoscale Physics · Physics 2013-11-14 Cristian Ciracì , Michael Scalora , David R. Smith

We estimate the beyond the Standard Model (SM) contribution to the B_{s,d} \to \gamma\gamma double radiative decay in the framework of the model with one universal extra dimension. This contribution gives a \sim 3 (6)% enhancement of the…

High Energy Physics - Phenomenology · Physics 2008-11-26 G. Devidze , A. Liparteliani , Ulf-G. Meißner

Rate equation models are extensively used to describe the many-body states of laser driven atomic gases. We show that the properties of the rate equation model used to describe nonlinear optical effects arising in interacting Rydberg gases…

Atomic Physics · Physics 2015-06-18 M. Gärttner , S. Whitlock , D. W. Schönleber , J. Evers

We study the collective spontaneous emission of three identical two-level atoms initially prepared in the excited states by measuring Glauber's third-order photon correlation function. Assuming two atoms at sub-wavelength distance from each…

Quantum Physics · Physics 2022-04-06 Manuel Bojer , Lukas Götzendörfer , Romain Bachelard , Joachim von Zanthier

Semiclassical methods are used to study the nonlinear interaction of light in vacuum in the context of four wave mixing. This study is motivated by a desire to investigate the possibility of using recently developed powerful ultrashort…

Optics · Physics 2014-11-18 F. Moulin , D. Bernard

Third-order bound-charge electronic nonlinearities of Si nanocrystals (NCs) embedded in a wide band-gap matrix representing silica are theoretically studied using an atomistic pseudopotential approach. Nonlinear refractive index, two-photon…

Materials Science · Physics 2016-08-17 Hasan Yıldırım , Ceyhun Bulutay

Over the last three decades, plasmonics using metallic nanostructures has become central to nanophotonics research. Recently, its targets have been extended to nonlinear optical phenomena. In a nonlinear regime, quantum mechanical effects,…

Optics · Physics 2023-01-04 Takashi Takeuchi , Kazuhiro Yabana

Using an exactly soluble one-dimensional atomic model we explore the idea that the recently observed high-order nonlinearity in optical filaments is due to virtual transitions involving the continuum states. We show that the model's…

Optics · Physics 2015-05-20 A. Teleki , E. M. Wright , M. Kolesik

We investigate superradiance and subradiance of indistinguishable atoms with quantized motional states, starting with an initial total state that factorizes over the internal and external degrees of freedom of the atoms. Due to the…

Quantum Physics · Physics 2017-10-10 F. Damanet , D. Braun , J. Martin

The effects of the highly damped modes in the energy and reaction rates in a plasma are discussed. These modes, with wavenumbers $k \gg k_{D}$, even being only weakly excited, with less than $k_{B}T$ per mode, make a significant…

Astrophysics · Physics 2008-11-26 Merav Opher , Luis O. Silva , Dean E. Dauger , Viktor K. Decyk , John M. Dawson

We present a formalism for modelling parametric amplification by resonators subject to rate-limited nonlinearity of mixed reactive/dissipative character, with particular relevance to superconducting devices. The non-linearity is assumed to…

Mesoscale and Nanoscale Physics · Physics 2022-12-16 Christopher N. Thomas , Stafford Withington , Songyuan Zhao

Efficient third-order nonlinearities of the Zinc Oxide and Al-doped Zinc Oxide were studied by Third Harmonic Generation (Third Harmonic Generation) Maker fringes to establish the effect Aluminum of Aluminum doping(Al-doping) on the cubic…

Materials Science · Physics 2023-05-01 Calford Otieno

We develop a microscopic large-$N$ theory of electron-electron interaction corrections to multi-legged Feynman diagrams describing second- and third-order nonlinear response functions. Our theory, which reduces to the well-known random…

Materials Science · Physics 2017-01-25 Habib Rostami , Mikhail I. Katsnelson , Marco Polini

The quantum statistics of damped higher-order optical solitons are analyzed numerically, using cumulant-expansion techniques in Gaussian approximation. A detailed analysis of nonclassical properties in both the time and the frequency domain…

Quantum Physics · Physics 2009-09-25 Eduard Schmidt , Ludwig Knoell , Dirk-Gunnar Welsch

We predict a resonant enhancement of the nonlinear optical response of an interacting Rydberg gas under conditions of electromagnetically induced transparency. The enhancement originates from a two-photon process which resonantly couples…

We investigate the impact of the observed correlation between a galaxies shape and its surrounding density field on the measurement of third order weak lensing shear statistics. Using numerical simulations, we estimate the systematic error…

Intense laser technologies generate light with unprecedented and growing intensities. The possibility emerges that a nucleus responds nonlinearly to an intense light field, pointing to a yet little explored research area of nuclear…

Atomic Physics · Physics 2021-09-01 Tao Li , Xu Wang

We study the corrections to the galaxy three-point correlation function (3PCF) induced by weak lensing magnification due to the matter distribution along the line of sight. We consistently derive all the correction terms arising up to…

Astrophysics · Physics 2008-11-26 Fabian Schmidt , Alberto Vallinotto , Emiliano Sefusatti , Scott Dodelson

It was recently suggested that the odd-even staggering of reaction cross sections is an evidence of the pair- ing anti-halo effect on projectile radii. We define the dimensionless staggering parameters, {\Gamma}rds and {\Gamma}R, for…

Recently, a conceptually new physics beyond the Standard Model (SM), unparticle, has been proposed, where a hidden conformal sector is coupled to the SM sector through higher dimensional operators. In this setup, we investigate unparticle…

High Energy Physics - Phenomenology · Physics 2008-11-26 Tatsuru Kikuchi , Nobuchika Okada , Michihisa Takeuchi
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