Tootfinder

Auch wir vom Team Troet.Cafe sprechen unsere ungebrochene Solidarität mit @… aus, dessen Leitung momentan von der U.S. Regierung mit Sanktionen angegriffen wird.
Der Präsident des Internationalen Strafgerichtshof erhielt auch eine Sanktion dieser Art, für ihn hieß das: Einreiseverbot, Schließung seiner Bankkonten, Schließu…

spanish_highschools: Spanish high schools (2023)
Directed networks of friendships obtained through a social survey of spanish high school students.
This network has 378 nodes and 3267 edges.
Tags: Social, Offline, Weighted, Metadata
https://networks.skewed.de/net/spanish

Aa nice overnight, cultural, stay in Liverpool.
Philharmonic concert with UK premier of accordion concerto by Dobrinka Tabakova - a great performance and an interesting, joyful listen.
Turner exhibition at the Walker Art Gallery. On his influence - again really good (the 3rd Turner exhibition I've been too this year. The others etchings at Whitworth Manchester and Turner & locally influenced painters Towner, Eastbourne). Shall have to pick up the brushes again!

Philadelphia school prepares for Cowboys-Eagles showdown in a bizarre way https://www.si.com/nfl/cowboys/onsi/news/philadelphia-school-prepares-for-cowboys-eagles-showdown-in-a-bizarre-way

They're trying to infiltrate, instigate, and feed us false information. This is infiltration and preparation for a full scale suppression effort, and you need to start preparing. (Minnesota - 1/25/26)
Source:
https://reddit.com/comments/1qmk1h9
Full text transcription available on Lemm…

Multi-port programmable silicon photonics using low-loss phase change material Sb$_2$Se$_3$
Thomas W. Radford, Idris A Ajia, Latif Rozaqi, Priya Deoli, Xingzhao Yan, Mehdi Banakar, David J Thomson, Ioannis Zeimpekis, Alberto Politi, Otto L. Muskens
https://arxiv.org/abs/2511.18205 https://arxiv.org/pdf/2511.18205 https://arxiv.org/html/2511.18205
arXiv:2511.18205v1 Announce Type: new
Abstract: Reconfigurable photonic devices are rapidly emerging as a cornerstone of next generation optical technologies, with wide ranging applications in quantum simulation, neuromorphic computing, and large-scale photonic processors. A central challenge in this field is identifying an optimal platform to enable compact, efficient, and scalable reconfigurability. Optical phase-change materials (PCMs) offer a compelling solution by enabling non-volatile, reversible tuning of optical properties, compatible with a wide range of device platforms and current CMOS technologies. In particular, antimony tri-selenide ($\text{Sb}_{2}\text{Se}_{3}$) stands out for its ultra low-loss characteristics at telecommunication wavelengths and its reversible switching. In this work, we present an experimental platform capable of encoding multi-port operations onto the transmission matrix of a compact multimode interferometer architecture on standard 220~nm silicon photonics using \textit{in-silico} designed digital patterns. The multi-port devices are clad with a thin film of $\text{Sb}_{2}\text{Se}_{3}$, which can be optically addressed using direct laser writing to provide local perturbations to the refractive index. A range of multi-port geometries from 2$\times$2 up to 5$\times$5 couplers are demonstrated, achieving simultaneous control of up to 25 matrix elements with programming accuracy of 90% relative to simulated patterns. Patterned devices remain stable with consistent optical performance across the C-band wavelengths. Our work establishes a pathway towards the development of large scale PCM-based reconfigurable multi-port devices which will allow implementing matrix operations on three orders of magnitude smaller areas than interferometer meshes.
toXiv_bot_toot

Epstein Files Transparency Act:
"The Attorney General shall ... make publicly available in a searchable and downloadable format."
NYT:
The DOJ "website also contains a search function, though it is unclear if it’s working properly.
A query for 'Epstein' returned no results."
-- Ryan Goodman

Ryan Goodman (@rgoodlaw.bsky.social)
Epstein Files Transparency Act: "The Attorney General shall ... make publicly available in a searchable and downloadable format." NYT: The DOJ "website also contains a search function, though it is unclear if it’s working properly. A query for 'Epstein' returned no results."

spanish_highschools: Spanish high schools (2023)
Directed networks of friendships obtained through a social survey of spanish high school students.
This network has 195 nodes and 4176 edges.
Tags: Social, Offline, Weighted, Metadata
https://networks.skewed.de/net/spanish

Attosecond-resolved quantum fluctuations of light and matter
Matan Even Tzur, Chen Mor, Noa Yaffe, Michael Birk, Andrei Rasputnyi, Omer Kneller, Ido Nisim, Ido Kaminer, Maria Chekhova, Michael Krueger, Misha Ivanov, Nirit Dudovich, Oren Cohen
https://arxiv.org/abs/2511.18362 https://arxiv.org/pdf/2511.18362 https://arxiv.org/html/2511.18362
arXiv:2511.18362v1 Announce Type: new
Abstract: Until recently, attosecond optical spectroscopy and quantum optics evolved along non-overlapping directions. In attosecond science, attosecond pulses have been regarded as classical waves, applied to probe electron dynamics on their natural time scale. Here, we transfer fundamental concepts of quantum optics into attosecond physics, enabling control of both the properties of the XUV attosecond pulses and the quantum fluctuations of matter on attosecond time scales. By combining bright squeezed vacuum (BSV) with a strong laser field to drive high-harmonic generation, we transfer the quantum properties of the BSV onto the resulting XUV attosecond pulses. Applying advanced attosecond interferometry, we reconstruct the quantum state of the XUV high harmonics and their associated attosecond pulses with attosecond precision. Finally, we resolve the squeezing of the electron's wavepacket during one of the most fundamental strong-field phenomena - field induced tunneling. The ability to measure and control quantum correlations in both electrons and XUV attosecond pulses establishes a foundation for attosecond quantum electrodynamics, manipulating the quantum state of electrons and photons with sub-cycle precision.
toXiv_bot_toot

messal_shale: Messel Shale food web (2014)
A network of feeling links among taxa based on the 48 million years old uppermost early Eocene Messel Shale. Edge property 'certainty' denotes the certainty of the edge. Metadata include evidence, habitat, and trophic roles. The edge direction goes from consumer to resource.
This network has 700 nodes and 6444 edges.
Tags: Biological, Food Web, Uncertain, Weighted, Metadata