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Dec 11, 2024

Alena Tensor—a new hope for unification in physics

Posted by in categories: mathematics, quantum physics

The search for quantum gravity has gone on for 100 years, but it is not the only unification challenge in physics. Many of us believe that one day there will be a unification theory—a theory that will reconcile many divergent physical theories.

Our new article published in Physica Scripta brings new hope that such a theory exists. It demonstrates that the use of a certain mathematical object called Alena Tensor reconciles various physical theories, including , electrodynamics, and continuum mechanics. Will this finally allow scientists to unify descriptions used in physics?

Dec 11, 2024

Automated discovery of experimental designs in super-resolution microscopy with XLuminA

Posted by in category: robotics/AI

Researchers have developed XLuminA, an AI framework for the automated discovery of super-resolution microscopy techniques. With 10,000x faster optimization than traditional methods, it discovers unexplored designs breaking the diffraction limit.

Dec 11, 2024

Room-temperature nanodevice that generates structured light shows promise for secure communication and advanced optics

Posted by in categories: innovation, quantum physics

Researchers have developed a tiny, room-temperature device that creates a special type of structured light called radially polarized photons, which are highly useful for secure communication, advanced imaging, and precision optical tools.

By carefully designing and positioning a quantum dot within a nanoantenna, they achieved high-quality light with more than 93% purity. This breakthrough helps improve the efficiency and practicality of devices that use structured light, paving the way for advancements in and optical technology.

A team led by Prof. Ronen Rapaport from the Racah School of Physics at The Hebrew University of Jerusalem has developed the new device that produces radially polarized photons at room temperature. This advancement offers new possibilities for both classical and quantum communication technologies.

Dec 11, 2024

Neutrinos, Dark Energy, and Einstein: DESI Maps the Universe’s Secrets

Posted by in categories: cosmology, evolution, mapping, particle physics

New analysis supports Einstein’s relativity and narrows neutrino mass ranges, hinting at evolving dark energy.

Gravity, the fundamental force sculpting the universe, has shaped tiny variations in matter from the early cosmos into the vast networks of galaxies we see today. Using data from the Dark Energy Spectroscopic Instrument (DESI), scientists have traced the evolution of these cosmic structures over the past 11 billion years. This research represents the most precise large-scale test of gravity ever conducted, offering unprecedented insights into the universe’s formation and behavior.

Introduction to DESI and its global impact.

Dec 11, 2024

Cleo File Transfer Vulnerability Under Exploitation — Patch Pending, Mitigation Urged

Posted by in category: cybercrime/malcode

Critical Cleo software flaw exploited en masse; update Harmony, VLTrader, LexiCom to prevent ransomware attacks.

Dec 11, 2024

Fake Recruiters Distribute Banking Trojan via Malicious Apps in Phishing Scam

Posted by in categories: cybercrime/malcode, finance, robotics/AI

Updated Antidot banking trojan targets Android users via fake job offers, stealing credentials and taking remote control.

Dec 11, 2024

Phone Phishing Gang Busted: Eight Arrested in Belgium and Netherlands

Posted by in categories: cybercrime/malcode, mobile phones

Phishing gang arrested in Belgium and Netherlands; Europol seizes luxury goods, cash, and millions stolen.

Dec 11, 2024

WPForms bug allows Stripe refunds on millions of WordPress sites

Posted by in category: security

A vulnerability in WPForms, a WordPress plugin used in over 6 million websites, could allow subscriber-level users to issue arbitrary Stripe refunds or cancel subscriptions.

Tracked under CVE-2024–11205, the flaw was categorized as a high-severity problem due to the authentication prerequisite. However, given that membership systems are available on most sites, exploitation may be fairly easy in most cases.

The issue impacts WPForms from version 1.8.4 and up to 1.9.2.1, with a patch pushed in version 1.9.2.2, released last month.

Dec 11, 2024

Ubisoft fixes Windows 11 24H2 conflicts causing game crashes

Posted by in category: entertainment

Microsoft has now partially lifted a compatibility hold blocking the Windows 24H2 update on systems with some Ubisoft games after the French video game publisher has fixed bugs causing crashes, freezes, and audio issues.

The company blocked Windows 24H2 upgrades on PCs with Assassin’s Creed, Star Wars Outlaws, and Avatar: Frontiers of Pandora games more than two weeks ago, following a stream of user reports on Reddit [1, 2] and the Microsoft Answers forums [1, 2, 3] that these games were no longer working correctly.

Windows users affected by this known issue were particularly frustrated as they reported these issues in the Windows Insider Feedback Hub, on Reddit, and other online platforms since Windows 11 24H2 was still in preview.

Dec 11, 2024

Colloidal quantum dots enable tunable liquid-state lasers

Posted by in category: quantum physics

Present-day liquid-state lasers are based on organic dyes. Here we demonstrate an alternative class of liquid lasers that use solutions of colloidal quantum dots (QDs). Previous efforts to realize such devices have been hampered by the fast non-radiative Auger recombination of multicarrier states required for optical gain. Here we overcome this challenge by using type-(I + II) QDs, which feature a trion-like optical gain state with strongly suppressed Auger recombination. When combined with a Littrow optical cavity, static (non-circulated) solutions of these QDs exhibit stable lasing tunable from 634 nm to 575 nm. These results indicate the feasibility of technologically viable dye-like QD lasers that exhibit broad spectral tunability and, importantly, provide stable operation without the need for a circulation system—a standard attribute of traditional dye lasers. The latter opens the door to less complex and more compact devices that can be readily integrated with various optical and electro-optical systems. An additional advantage of these lasers is the wide range of potentially available wavelengths that can be selected by controlling the composition, size and structure of the QDs.


Liquid lasers based on solutions of colloidal quantum dots exhibit a trion-like optical gain state with suppressed Auger recombination, which combined with a Littrow optical cavity enables stable and tunable liquid-state lasing.

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