@ErikJonker@mastodon.social2025-12-03 10:21:57
Deeplearning.ai is a resource i can really recommend for free (!) courses on various AI subjects, serious, no hype. For example the Agentic AI course by Andrew Ng does a good breakdown of the hype around "AI Agents" / "Agentic AI".
#AI #Deeplearning
@@arXiv_physicsatomph_bot@mastoxiv.page@mastoxiv.page2025-12-10 09:04:11
Incoherent repumping scheme in the $^{88}$Sr$^{ }$ five-level manifold
Valentin Martimort, Sacha Guesne, Derwell Drapier, Vincent Tugaye, Lilay Gros-Desormeaux, Valentin Cambier, Albane Douillet, Luca Guidoni, Jean-Pierre Likforman
https://arxiv.org/abs/2512.08710 https://arxiv.org/pdf/2512.08710 https://arxiv.org/html/2512.08710
arXiv:2512.08710v1 Announce Type: new
Abstract: Laser-cooled trapped ions are at the heart of modern quantum technologies and their cooling dynamics often deviate from the simplified two-level atom model. Doppler cooling of the $^{88}$Sr$^{ }$ ion involves several electronic levels and repumping channels that strongly influence fluorescence.In this work, we study a repumping scheme for the $^{88}$Sr$^{ }$ ion by combining precision single-ion spectroscopy with comprehensive numerical modeling based on optical Bloch equations including 18 Zeeman sublevels. We show that, although the observed fluorescence spectra retain a Lorentzian lineshape, their width and amplitude cannot be explained by a two-level atom description. Moreover, we find the optimal repumping conditions for maximizing the photon scattering rate.
toXiv_bot_toot
@Schrank@phpc.social2026-01-28 07:33:14
Your theme breaks while deploying in a new directory? Our StaticThemePathBuilder might solve your problem! Have a look.
https://winkelwagen.de/2026/01/28/shopware-6-deployer-and-broken-themes/
@brichapman@mastodon.social2025-12-01 12:24:01
Solar breakthrough: Chinese researchers just hit 30.1% efficiency with all-perovskite tandem cells using a novel dipolar passivation method.
The technique reduces defects and improves charge transport, while the cells retained 87% efficiency after 1,025 hours—a major step toward stable, sustainable solar energy.
@datascience@genomic.social2026-01-27 11:00:00
Im using case_when() quite a lot, case_match() is new to me: #rstats
@jlpiraux@wallonie-bruxelles.social2025-12-06 08:13:42
La pollution plastique va plus que doubler d'ici 2040, générant l'équivalent d'un camion poubelle de déchets chaque seconde.
#plastique #environnement
@theodric@social.linux.pizza2026-01-06 23:42:34
On the Raspberry Pi 5, the Raspberry Pi Foundation's decision to require 5v5a and essentially mandate the use of a quite nonstandard USB-C power supply to get the rated performance out of the system is fucking dumbassed to all hell and causes the device to be extremely inflexible in any application outside the most basic maker/dabbler shit. What if I want to integrate the Pi5 with a NAS? I have to put two overrides in config.txt, and then it still moans about undervoltage even when provi…
@ruth_mottram@fediscience.org2025-12-25 23:08:28
Storm bound in Antarctica and catching up with reading, including an *excellent* paper by one of our PhD students on #DeepLearning applications, soon to be submitted.
Not for first time I'm struck that 1) there is a genuine #AI revolution in climate 2) It's mostly based on ERA-5 reanalysis.
@datascience@genomic.social2026-01-28 11:00:00
{nplyr} has helper functions to work on nested dataframes: #rstats #datascience
@Schrank@phpc.social2026-02-05 06:51:15
A Shopware 6 plugin failed because it used a relative path to load a file from vendor/, which broke in a deployer setup where custom/plugins is shared across releases. Since plugins can live in different locations, such paths are unreliable. The fix is to use kernel.project_dir and build the vendor path dynamically via DI. Read the full blog post to learn how.
