Scalable optical neural network with nonlocally coupled coherent photonic processor

This paper presents a scalable optical neural network architecture that utilizes nonlocally coupled coherent light and multiport directional couplers to achieve matrix-vector multiplication with a linear O(N)O(N) scaling of active components, overcoming the quadratic O(N2)O(N^2) limitations of conventional Mach-Zehnder interferometer meshes.

Chun Ren, Ryota Tanomura, Kazuki Ichinose, Keigo Mizukami, Yoshitaka Taguchi, Taichiro Fukui, Yoshiaki Nakano, Takuo TanemuraTue, 10 Ma🔬 physics.optics

The Bragg Frequency Convertor: A Meeting Between Spatial and Temporal Periodicities For Selective Parametric Frequency Translation

This paper introduces the Bragg Frequency Convertor, a spatial-temporal periodic structure that achieves selective, directional, and spurious-free parametric frequency conversion by exploiting the synergistic interplay between the intrinsic spatial periodicity of a Bragg grating and the time modulation of its specific layers.

Sajjad TaravatiTue, 10 Ma🔬 physics.optics

Impact of refractive index heterogeneity on stimulated Brillouin scattering microscopy: a quantitative analysis

This study quantitatively demonstrates that refractive index heterogeneity in samples distorts focal fields and reduces pump-probe overlap in stimulated Brillouin scattering microscopy, leading to attenuated gain and degraded precision while invalidating fiber-coupling efficiency as a linear proxy for Brillouin gain.

Meng Xu, Zixuan Du, Yun Qi, Jinrui Zhang, Shuai Yao, Robert Prevedel, Fan YangTue, 10 Ma🔬 physics.optics

Spatiotemporal Stabilization of Turbulence-Distorted Gaussian Beams via Waveguide Spatial Filtering

This paper presents a unified theoretical and experimental framework that mitigates atmospheric turbulence-induced distortions in Gaussian beams by employing a Cholesky-whitened Gram–Charlier expansion to quantify non-Gaussianity and utilizing a dielectric waveguide as a passive spatial filter to suppress higher-order modes, thereby restoring beam stability and Gaussian statistics.

Shouvik Sadhukhan, C. S. NarayanamurthyTue, 10 Ma🔬 physics.optics

Structural Design and Performance Analysis of Laser Transmitting Telescope for Space Gravitational Wave Detection

This paper presents the design and multi-dimensional performance analysis of a lightweight, off-axis four-mirror laser transmitting telescope for space gravitational wave detection, demonstrating that the optimized structure achieves high optical efficiency, nanometer-level surface stability, and robust thermal and dynamic performance under harsh space conditions.

Long Yongtao, Mo Yan, Cao Shengyi, Cao Jiamin, Zhao Lujia, Wang Haibo, Wang Shuangbao, Tan Hao, Liu Xiaohong, Wang Dawei, Ma DonglinTue, 10 Ma🔭 astro-ph

Experimental investigation of Lévy flights for step-length distributions with a length-dependent local power exponent

This paper experimentally investigates light transmission through dense atomic vapor, demonstrating that the propagation can be modeled as a Lévy flight with a length-dependent local power exponent and a step-length distribution that alternates based on atomic collisions, where the measured Lévy index is determined by the system size.

Isaac C. Nunes, Jesús P. López, Thierry Passerat de SilansTue, 10 Ma🔬 physics.atom-ph

Large differential attosecond delays in solid state photoemission

This study reveals that large differential attosecond delays in photoemission from Bi2_2Te3_3 and Bi2_2Se3_3 arise from strong energy-dependent variations in final-state dynamics caused by multiple surface scattering, rather than intra-atomic effects or ballistic transport.

Andreas Gebauer, Walter Enns, Sergej Neb, Tillmann Schabbehard, Luis Maschmann, Stefan Muff, J. Hugo Dil, Ulrich Heinzmann, Stephan Fritzsche, Ricardo Diez Muiño, Pedro M. Echenique, Nikolay M. Kabachnik, Eugene E. Krasovskii, Walter PfeifferTue, 10 Ma🔬 cond-mat.mtrl-sci

Fluctuation imaging of disorder in monolayer semiconductors

This paper demonstrates that super-resolution fluorescence fluctuation microscopy is a rapid and effective method for imaging localized exciton instability caused by interfacial disorder in monolayer semiconductors, offering a practical alternative to atomic force microscopy and hyperspectral imaging for evaluating material quality in nanoscale devices.

Tom T. C. Sistermans, Rasmus H. Godiksen, Sara A. Elrafei, Alberto G. CurtoTue, 10 Ma🔬 cond-mat.mes-hall

Color Centers and Hyperbolic Phonon Polaritons in Hexagonal Boron Nitride: A New Platform for Quantum Optics

This paper establishes a cavity-QED framework connecting hexagonal boron nitride color centers with hyperbolic phonon polaritons, demonstrating how single quantum emitters can serve as on-chip sources to generate, control, and mediate long-range interactions of confined mid-infrared polaritons for advanced quantum optics applications.

Jie-Cheng Feng, Johannes Eberle, Sambuddha Chattopadhyay, Johannes Knörzer, Eugene Demler, Ataç \.Imamo\u{g}luTue, 10 Ma⚛️ quant-ph

A Concept of Two-Point Propagation Field of a Single Photon: A Way to Picometer X-ray Displacement Sensing and Nanometer Resolution 3D X-ray Micro-Tomography

This paper introduces the two-point propagation field (TPPF), a phase-sensitive quantity derived from single-photon detection probabilities that enables picometer-scale X-ray displacement sensing and deterministic, non-iterative 3D nanometer-resolution tomography by leveraging stable high-frequency sinusoidal structures and Fourier-Radon transformations.

Li Hua YuTue, 10 Ma⚛️ quant-ph

Heterogeneously Integrated Diamond-on-Lithium Niobate Quantum Photonic Platform

This paper demonstrates a scalable quantum photonic platform by heterogeneously integrating high-Q diamond photonic crystal cavities with a thin-film lithium niobate backbone, enabling efficient, low-loss photon transfer and collection from silicon vacancies for practical quantum networking.

Sophie W. Ding, Chang Jin, Zixi Li, Nicholas Achuthan, Kazuhiro Kuruma, Xinghan Guo, Brandon Grinkemeyer, David D. Awschalom, Nazar Delegan, F. Joseph Heremans, Alexander A. High, Marko LoncarTue, 10 Ma⚛️ quant-ph