Tootfinder

Enhancing Photon Indistinguishability of Spectrally Mismatched Single Photons by Cavity Floquet Engineering
J. W. Yu, X. Q. Zhou, Z. B. Ni, X. T. Cheng, Y. Zhao, H. H. Zhu, C. H. Li, F. Liu, C. Y. Jin
https://arxiv.org/abs/2507.02460

Enhancing Photon Indistinguishability of Spectrally Mismatched Single Photons by Cavity Floquet Engineering
We theoretically propose a scheme to enhance the photon indistinguishability of spectrally mismatched single photons via Floquet-engineered optical frequency combs (OFCs) in cavity quantum electrodynamic systems. By periodically modulating two distinct single-photon states under a modulation frequency which is exactly equal to the spectral mismatch of two cavity modes, a pair of single-photon frequency-comb (SPFC) states is prepared energy-conservatively based on full unitary operations. The tw…

Line shapes in time- and angle-resolved photoemission spectroscopy explored by machine learning
Tami C. Meyer, Gesa-R. Siemann, Paulina Majchrzak, Thomas Seyller, Jennifer Rigden, Yu Zhang, Emma Springate, Charlotte Sanders, Philip Hofmann
https://arxiv.org/abs/2506.02137

Line shapes in time- and angle-resolved photoemission spectroscopy explored by machine learning
Time- and angle-resolved photoemission spectroscopy is a powerful technique for investigating the dynamics of excited carriers in quantum materials. Typically, data analysis proceeds via the inspection of time distribution curves (TDCs), which represent the time-dependent photoemission intensity in a region of interest -- often chosen somewhat arbitrarily -- in energy-momentum space. Here, we employ $k$-means, an unsupervised machine learning technique, to systematically investigate trends in T…

Semi-analytical modeling of receive transfer function and thermal noise of integrated photonic ultrasound transducers
Sabiju Valiya Valappil, Peter Harmsma, Maurits van der Heiden, Martin Verweij, Paul van Neer
https://arxiv.org/abs/2506.02817

Semi-analytical modeling of receive transfer function and thermal noise of integrated photonic ultrasound transducers
Ultrasound transducers (UTs) are extensively used in several applications across a multitude of disciplines. A new type of UTs namely integrated photonic ultrasound transducers (IPUTs) possess superior performance due to the presence of optical interrogation systems, avoiding electric crosstalk and thermal electronic noise of the sensor. However, a major component of the IPUT's noise floor is its thermal acoustic noise. Several studies have been proposed to characterize IPUTs' behavior; neverth…

High-Contrast Coronagraphy
Matthew A. Kenworthy, Sebastiaan Y. Haffert
#toXiv_bot_toot

Observation of generic U(m) non-Abelian holonomy in photonics
Youlve Chen, Jinlong Xiang, An He, Yikai Su, Ian H. White, Xuhan Guo
https://arxiv.org/abs/2507.01394

Observation of generic U(m) non-Abelian holonomy in photonics
Non-Abelian geometric phases form the foundation of fault-tolerant holonomic quantum computation. An "all-geometric" approach leveraging these phases enables robust unitary operations in condensed matter systems. Photonics, with rich degrees of freedom, offer a highly promising platform for non-Abelian holonomy. Yet, achieving universal unitary transformations in photonic holonomy remain elusive. Intrinsic positive real couplings in dissipationless photonic waveguides restrict holonomy to speci…

PARROT: Synergizing Mamba and Attention-based SSL Pre-Trained Models via Parallel Branch Hadamard Optimal Transport for Speech Emotion Recognition
Orchid Chetia Phukan, Mohd Mujtaba Akhtar, Girish, Swarup Ranjan Behera, Jaya Sai Kiran Patibandla, Arun Balaji Buduru, Rajesh Sharma
https://arxiv.org/abs/2506.01138

PARROT: Synergizing Mamba and Attention-based SSL Pre-Trained Models via Parallel Branch Hadamard Optimal Transport for Speech Emotion Recognition
The emergence of Mamba as an alternative to attention-based architectures has led to the development of Mamba-based self-supervised learning (SSL) pre-trained models (PTMs) for speech and audio processing. Recent studies suggest that these models achieve comparable or superior performance to state-of-the-art (SOTA) attention-based PTMs for speech emotion recognition (SER). Motivated by prior work demonstrating the benefits of PTM fusion across different speech processing tasks, we hypothesize t…

This https://arxiv.org/abs/2410.14774 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepp…

Experimental targets for dark photon dark matter
Ultralight dark photon dark matter features distinctive cosmological and astrophysical signatures and is also supported by a burgeoning direct-detection program searching for its kinetic mixing with the ordinary photon over a wide mass range. Dark photons, however, cannot necessarily constitute the dark matter in all of this parameter space. In minimal models where the dark photon mass arises from a dark Higgs mechanism, early-Universe dynamics can easily breach the regime of validity of the lo…

This https://arxiv.org/abs/2503.09005 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Progenitor Dependence of Neutrino-driven Supernova Explosions with the Aid of Heavy Axion-like Particles
We perform spherically symmetric simulations of core-collapse supernovae with the aid of heavy axion-like particles (ALPs) which interact with photons and redistribute energy within supernova matter. We explore a wide ALP parameter space that includes MeV-scale ALP mass $m_{\,a}$ and the ALP-photon coupling constant $g_{\,a γ} \sim 10^{\,-10} \, \rm{GeV}^{\,-1}$ , employing three progenitor models with zero-age main-sequence mass of $11.2\,M_\odot$, $20.0\,M_\odot$, and $25.0\,M_\odot$. We fin…

Hundreds of protesters greeted Trump and the homeland security secretary, Kristi Noem, as they arrived at the hastily assembled concentration camp in the Florida Everglades .
The space was previously a largely disused airstrip surrounded by swampland abundant in alligators and Burmese pythons.
“You’ll have a lot of people that will deport on their own because they don’t want to end up in an Alligator Alcatraz, or some of these other places,” Governor Ron DeSantis said.
“Th…

Photonic Altermagnets: Magnetic Symmetries in Photonic Structures
Andrew Sungwook Kim, Youqiang Huang, Zhipei Sun, Q-Han Park, Hyunyong Choi
https://arxiv.org/abs/2506.23497

Photonic Altermagnets: Magnetic Symmetries in Photonic Structures
The unique physical properties of altermagnets, when transplanted to photonic systems, are anticipated to offer a new degree of freedom for engineering electromagnetic waves. Here, we show that a photonic analogue of altermagnetism can be mimicked in photonic crystals, where engineered photonic crystals can host spin space group symmetries. Our approach allows for the creation of spin-split bands and the corresponding transport properties provide an effective platform for circularly polarized l…