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Entanglement between large numbers of quantum modes is the quintessential resource for future technologies such as the quantum internet. Conventionally the generation of multimode entanglement in optics requires complex layouts of…

Empirical studies have shown that continuous low-loss paths can be constructed between independently trained neural network models. This phenomenon, known as mode connectivity, refers to the existence of such paths between distinct…

Machine Learning · Computer Science 2026-05-29 Yongding Tian , Zaid Al-Ars , Maksim Kitsak , Peter Hofstee

Local-nonlocal coupling approaches provide a means to combine the computational efficiency of local models and the accuracy of nonlocal models. To facilitate the coupling of the two models, non-matching grids are often desirable as nonlocal…

Computational Engineering, Finance, and Science · Computer Science 2025-07-03 Patrick Diehl , Emily Downing , Autumn Edwards , Serge Prudhomme

We propose to combine multiple laser beams into a single diffraction-limited beam by the beam self-focusing (collapse) in the Kerr medium. The beams with the total power above critical are first combined in the near field and then…

Pattern Formation and Solitons · Physics 2015-06-19 Pavel M. Lushnikov , Natalia Vladimirova

Spontaneous parametric downconversion is the primary source to generate entangled photon pairs in quantum photonics laboratories. Depending on the experimental design, the generated photon pairs can be correlated in the frequency spectrum,…

Quantum Physics · Physics 2021-05-19 Alessio D'Errico , Felix Hufnagel , Filippo Miatto , Mohammadreza Rezaee , Ebrahim Karimi

We consider theoretically two coupled optical waveguides with a varying barrier height along the waveguides direction. The barrier could be constructed by the elongated island with a reduced refractive index (which acts as a potential…

Optics · Physics 2009-11-13 Ramaz Khomeriki , Archil Ugulava , Levan Chotorlishvili

Resonant coupling of a vibration to a cavity mode has been reported to dramatically modify spontaneous Raman scattering, but subsequent studies have produced conflicting results. In this Letter, we develop a microscopic quantum framework…

Mesoscale and Nanoscale Physics · Physics 2025-11-04 Maxime Dherbécourt , Joël Bellessa , Clémentine Symonds , Guillaume Weick , David Hagenmüller

We demonstrate control over optical coupling between air-suspended carbon nanotubes and air-mode nanobeam cavities by spectral tuning. Taking advantage of the large dielectric screening effects caused by adsorbed molecules, laser heating is…

Mesoscale and Nanoscale Physics · Physics 2018-08-24 H. Machiya , T. Uda , A. Ishii , Y. K. Kato

In this paper we study cavity optomechanical systems in which the position of a mechanical oscillator modulates both the resonance frequency (dispersive coupling) and the linewidth (dissipative coupling) of a cavity mode. Using a quantum…

Quantum Physics · Physics 2013-05-21 Talitha Weiss , Christoph Bruder , Andreas Nunnenkamp

Dispersive mode coupling is a promising mechanism for the development of advanced micro/nanoelectromechanical devices. However, strong coupling strength remains a key challenge limiting the practical applications of dispersive mode coupling…

Applied Physics · Physics 2025-04-17 Chao Li , Qian Liu , Kohei Uchida , Hua Li , Kazuhiko Hirakawa , Ya Zhang

We study numerically interaction of spatially localized modes in strongly scattering two-dimensional media. We move eigenvalues in the complex plane by changing gradually the index of a single scatterer. When spatial and spectral overlap is…

Optics · Physics 2016-11-30 Laurent Labonté , Christian Vanneste , Patrick Sebbah

The transition towards designs which co-package electronic and photonic die together in data center switch packages has created a scaling path to Petabyte per second (Pbps) input/output (I/O) in such systems. In a co-packaged design, the…

We present a scheme for generating and manipulating three-mode squeezed states with genuine tripartite entanglement by injecting single-mode squeezed light into an array of coupled optical waveguides. We explore the possibility to…

Quantum Physics · Physics 2019-08-29 S. Rojas-Rojas , E. Barriga , C. Muñoz , P. Solano , C. Hermann-Avigliano

We explain the relation between certain random tiling models and interacting particle systems belonging to the anisotropic KPZ (Kardar-Parisi-Zhang) universality class in 2+1-dimensions. The link between these two \emph{a priori} disjoint…

Mathematical Physics · Physics 2015-06-15 Alexei Borodin , Patrik L. Ferrari

By using an optical device based on the integration of a GRaded-INdex (GRIN) rod lens and a single-mode optical fiber we efficiently collected photon pairs generated by spontaneous parametric down-conversion. We show that this system…

Quantum Physics · Physics 2009-11-09 Giuseppe Vallone , Gaia Donati , Francesco De Martini , Paolo Mataloni

To estimate the smoothing distribution in a nonlinear state space model, we apply the conditional particle filter with ancestor sampling. This gives an iterative algorithm in a Markov chain Monte Carlo fashion, with asymptotic convergence…

Computation · Statistics 2015-09-17 Andreas Svensson , Thomas B. Schön , Manon Kok

The theory of two counter-propagating polarized beams interacting in a randomly birefringent fiber via the Kerr and Raman effects is developed and applied to the quantitative description of Raman polarizers in the undepleted regime. Here…

Building on the scientific understanding and technological infrastructure of single-mode fibers, multimode fibers are being explored as a means of adding new degrees of freedom to optical technologies such as telecommunications, fiber…

The existence and stability of the nonlinear spatial localized modes are investigated in parity-time symmetric optical media characterized by a generic complex hyperbolic refractive index distribution with competing gain and loss profile.…

Optics · Physics 2013-12-05 Bikashkali Midya , Rajkumar Roychoudhury

In this work, we theoretically study the quantum correlations present in an optomechanical system by invoking an additional cross-Kerr coupling between the optical and mechanical mode. Under experimentally achievable conditions, we first…

Optics · Physics 2017-08-02 Subhadeep Chakraborty , Amarendra K. Sarma
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