Tootfinder

Error Exponents for Quantum Packing Problems via An Operator Layer Cake Theorem
Hao-Chung Cheng, Po-Chieh Liu
https://arxiv.org/abs/2507.06232 https://

Error Exponents for Quantum Packing Problems via An Operator Layer Cake Theorem
In this work, we prove a one-shot random coding bound for classical-quantum channel coding, a problem conjectured by Burnashev and Holevo in 1998. By choosing the optimal input distribution, we recover the optimal error exponent (i.e., the reliability function) of classical-quantum channels for rates above the critical rate. Our result extends to various quantum packing-type problems, including classical communication over any fully quantum channel with or without entanglement-assistance, const…

I finally got rid of the old bed I’d kept since moving in, so the room feels pretty empty right now.
I’m in the process of reorganizing everything and plan to turn this space into my own anarchist sanctuary.
Soon, I’ll add a bookshelf and more anarchist art to the wall, right next to the communist hammer and sickle symbol.
#Declutter

En Suisse, un quart du trafic est généré par le tourisme
👉 Le tourisme: 25% du trafic global
👉 24% de ces déplacements en transports publics (TP)
👉 Fortes fluctuations (pics saisonniers/hebdomadaires)
👉 Défi important: part modale des TP pour le trafic de transit & transfrontalier
👉 Mieux exploiter le potentiel offert par l’offre TP couvrant l’ensemble du territoire national afin de mieux répartir la demande tout en tirant partie des capacités existantes

Uniqueness of phase retrieval from offset linear canonical transform
Jing Liu, Haiye Huo
https://arxiv.org/abs/2506.03944 https://arx…

Uniqueness of phase retrieval from offset linear canonical transform
The classical phase retrieval refers to the recovery of an unknown signal from its Fourier magnitudes, which is widely used in fields such as quantum mechanics, signal processing, optics, etc. The offset linear canonical transform (OLCT), which is a more general type of linear integral transform including Fourier transform (FT), fractional Fourier transform (FrFT), and linear canonical transform (LCT) as its special cases. Hence, in this paper, we focus on the uniqueness problem of phase retrie…

Development of new ultra-low-background particle detectors based on Micromegas technology for the search of Dark Matter at the low-mass frontier
Oscar Perez
https://arxiv.org/abs/2507.02172

Development of new ultra-low-background particle detectors based on Micromegas technology for the search of Dark Matter at the low-mass frontier
Weakly Interacting Massive Particles (WIMPs) are one of the best motivated candidates to compose the Dark Matter of the Universe. The lack of experimental confirmation by direct detection experiments or collider searches has ruled out canonical WIMP scenarios (masses $\sim$ GeV-TeV), making a case for the largely unexplored sub-GeV frontier. This PhD thesis is focused on the evolution and latest developments of TREX-DM, a gaseous Time Projection Chamber (TPC) designed to detect low-mass WIMPs t…

Please join me on July 7th for next month's MediaEd Club webinar for the Media Education Lab: "Privacy, Power, and Platforms"
https://mediaeducationlab.com/index.php/events/privacy-power-and-platforms
If you missed today's / this month…

Hydrodynamic interactions of low-aspect-ratio oscillating panels in a tip-to-tip formation
Yu Pan, Yuanhang Zhu, Elizabeth Westfall, Daniel B. Quinn, Haibo Dong, George V. Lauder
https://arxiv.org/abs/2506.22612

Hydrodynamic interactions of low-aspect-ratio oscillating panels in a tip-to-tip formation
The vertical, tip-to-tip arrangement of neighboring caudal fins, common in densely packed fish schools, has received much less attention than staggered or side-by-side pairings. We explore this configuration using a canonical system of two trapezoidal plates (aspect ratio AR = 1.2) that pitch about their leading edges while heaving harmonically at a Strouhal number St = 0.45 and a reduced frequency k = 2.09. Direct numerical simulations based on an immersed-boundary method are conducted over a …

Sur trois prises de position éthiques de Bibliosuisse
La récente prise de position de la commission Éthique professionnelle1 de Bibliosuisse concernant la neutralité des bibliothèques m'a rappelé l'existence de précédents documents du même type, et j'ai eu l'envie de les commenter en tant que professionnel et citoyen. Avant de commencer, je précise que la commission fait globalement du très bon travail, mais que certains détails suscitent chez moi des questions…

Sur trois prises de position éthiques de Bibliosuisse
La récente prise de position de la commission Éthique professionnelle1 de Bibliosuisse concernant la neutralité des bibliothèques m’a rappelé l’existence de précédents documents du même…

Vision-Aided ISAC in Low-Altitude Economy Networks via De-Diffused Visual Priors
Yulan Gao, Ziqiang Ye, Zhonghao Lyu, Ming Xiao, Yue Xiao, Ping Yang, Agata Manolova
https://arxiv.org/abs/2507.01574

Vision-Aided ISAC in Low-Altitude Economy Networks via De-Diffused Visual Priors
Emerging low-altitude economy networks (LAENets) require agile and privacy-preserving resource control under dynamic agent mobility and limited infrastructure support. To meet these challenges, we propose a vision-aided integrated sensing and communication (ISAC) framework for UAV-assisted access systems, where onboard masked De-Diffusion models extract compact semantic tokens, including agent type, activity class, and heading orientation, while explicitly suppressing sensitive visual content. …

Growing up in Chicago, Chakena D. Perry knew not to trust the water coming out of her tap.
“It was just one of these unspoken truths within households like mine
— low-income, Black households
— that there was some sort of distrust with the water,” said Perry,
who later learned that Chicago is the city with the most lead service lines in the country.
“No one really talked about it, but we never used our tap for just regular drinking.”
Now, as a senior polic…

Chicago residents risk daily lead exposure from toxic pipes. Replacing them will take decades.
The city with the most lead service lines in the country doesn’t plan to finish replacing them until 2076.