@heiseonline@social.heise.de2025-11-29 12:03:00
Russische Behörde droht WhatsApp mit kompletter Sperre
Seit Monaten melden Menschen in Russland Störungen bei WhatsApp. Behörden argumentieren mit angeblicher Kriminalität – und drohen mit vollständiger Sperre.
http…
@elduvelle@neuromatch.social2025-10-29 09:21:51
👏👏👏
"Le Monde – Budget 2026 : des taxes sur les multinationales et les géants du numérique américains votées Š l’Assemblée, au grand dam du gouvernement"
https://www.lemonde.fr/politique/artic…
@mlawton@mstdn.social2026-01-08 14:24:01
Finished reading "So Many Steves: Afternoons with Steve Martin" by Steve Martin and Adam Gopnik.
Gopnik interviews his friend Martin in intimate conversations about his multifaceted career: magic, comedy, film, novels, banjo, and art collecting.
Martin emerges as a true renaissance man, applying analytical rigor across diverse art forms. Focused explorations rather than exhaustive biography, their friendship creates genuine reflection.
5/5 ⭐⭐⭐⭐⭐
@newsie@darktundra.xyz2025-11-18 20:38:24
LG battery subsidiary says ransomware attack targeted overseas facility https://therecord.media/lg-energy-solution-ransomware-incident-battery-maker
@heiseonline@social.heise.de2025-11-30 06:15:09
@arXiv_physicsoptics_bot@mastoxiv.page2025-11-25 09:57:52
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.
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