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Mechanical qubit could be used in quantum sensors and quantum memories

Swiss researchers have developed a mechanical qubit using acoustic wave resonators that holds massive potential for use in quantum sensing and quantum memories, according to Physics World.
While the quantum computing platforms available today operate according to the principles of quantum electrodynamics, this new advancement allows for quantum information to be stored by mechanical resonators that interact with surroundings by quantized vibrations.
While mechanical resonators have longer lifetimes than their electromagnetic counterparts, they could previously not store quantum information.
The newly-developed mechanical qubit could store information using two different energy levels and remain in a coherent superposition of those two levels without interference from other levels.
The team is now working on improving the qubit to enable its use in quantum information processing.
Swapping excitations into the qubit could also allow it to be used in quantum sensing to measure things such as gravitational forces, which lone superconducting qubits cannot do.
While the new mechanical qubit still needs improvement, as it is not suitable for quantum logic operations, its creation is a significant step forward towards creating a true mechanical quantum computer.
The mechanical qubit, which is the first mechanical resonator that is nonlinear at the single quantum level, is described in Science.

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COSMOS

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The shape of light: “something that hasn’t been seen before in physics”

A new quantum theory has provided the first-ever depiction of the shape of a single light particle, a photon.
Understanding photon-matter interactions at the quantum level could have implications for quantum physics and material science.
Researchers from the University of Birmingham developed a theoretical model to describe the interactions between photons and their sources.
This research could lead to advancements in nanophotonics, pathogen detection, and controlled chemical reactions.

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Medium

416

Understanding Apparent Randomness:

Randomness in the natural world may not be as chaotic as it seems. It can emerge from structured probabilities within interconnected systems.
The framework of apparent randomness explains phenomena in physics and biology, such as ball lightning and genetic mutations.
Ball lightning appears random due to multiple interacting systems, including electrical fields, atmospheric composition, and surface interactions.
Mutations in biology arise from probabilistic interactions within internal and external systems, leading to increased entropy of probabilities.

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Github

223

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How to make Storybook Interactions respect user motion preferences

The open source tool Storybook Interactions can be a powerful tool, enabling developers to simulate and test user behaviors quickly. But if you’re unfamiliar with Interactions the simulated tests jumping around on the screen can feel disorienting.
This can be especially jarring for users who have the prefers-reduced-motion setting enabled in their operating system. When these users encounter a story that includes an interaction, their preferences are ignored and they have no option to disable or enable it.
At this time, Storybook does not have built-in capabilities to toggle interactions on or off. Until this feature can be baked in this blog will provide you with an alternative way to make your work environment more inclusive.
This addon stores user preferences for Interactions using window.localStorage. When the addon first loads, it checks whether the preference is already set and, if so, it defaults to the user’s preference.
When a user clicks the toggle button, preferences are updated and the page is refreshed to reflect the changes.
With this custom addon, you can ensure your workplace remains accessible to users with motion sensitivities while benefiting from Storybook’s Interactions. For those with prefers-reduced-motion enabled, motion will be turned off by default and all users will be able to toggle interactions on or off.
This explicit preference for a reduced motion experience can be used by browsers, applications, and websites to reduce unnecessary animations and motions.
Interactions can be turned off by default for users with prefers-reduced-motion enabled and all users will be able to toggle interactions on or off with the custom addon.
Users with prefers-reduced-motion enabled must have a way to toggle the feature on or off without altering their operating system user preferences.
The Storybook Interaction can cause disorientation for users or in some cases can even trigger a seizure.

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Medium

Neodynamics: A Vision for Adaptive Systems

Neodynamics is a framework that captures the dynamics of stability, change, coherence, and potential in systems.
It provides a foundation for analyzing various domains, from ecosystems to institutional adaptation.
SPARC, a methodology within Neodynamics, models adaptation through recursive choice, feedback mechanisms, and structured unpredictability.
Neodynamics offers a roadmap for designing resilient institutions, technologies, and communities in the face of uncertainty.

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Physicsworld

228

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VolkVac Instruments uses Atlas Technologies’ bi-metal expertise to create lightweight UHV suitcases

VolkVac Instruments has integrated bi-metal flanges supplied by Atlas Technologies into its latest ultrahigh-vacuum (UHV) suitcase to transport samples between systems across great distances without contamination. The suitcase is important, as raising a UHV sample's temperature changes its material behaviours permanently, and opening a UHV chamber can require several days of bakeout. Aluminium is an ideal material as it is lightweight and easy to machine. Although aluminium conducts heat ten times better than stainless steel and introduces smaller amounts of contamination, it is softer than steel and cannot be machined as efficiently. Bi-metal expertise is required to resolve aluminium's softness.
US-based VolkVac Instruments has created its ultralight aluminium ULSC-R UHV suitcase that weighs less than 7 kg. Its main challenge was controlling the softness of aluminium that could wear away sharp edges in UHV conflat flanges quickly, so engineering firm Atlas Technologies was deployed to create bimetal flanges with titanium, eliminating the need for stainless steel. The two companies worked closely to create VolkVac's custom iteration of the ULSC suitcase.
VolkVac is entrepreneur Igor Pinchuk's brainchild. While creating bespoke UHV solutions for decades, a portable UHV chamber requires uninterrupted UHV operation using integrated pumps. While Atlas removed the need for stainless steel materials through its bi-metal flanges, the handling system uses lightweight non-magnetic materials that can contain samples without altering composition.
UHV suitcases are essential for laboratory research studies that use ultra-high vacuum systems. Moving samples from one UHV system to another can be a complex and contaminated process if traditional methods are applied. The latest advances in materials, vacuum pumps, pump controllers, and batteries have made it possible to develop a lightweight, portable UHV chamber capable of maintaining its true UHV administration.
UHV and XHV tech plays an important role in particle accelerators, physics, chemistry, and materials science research. With UHV and XHV vacuums operating in the mere absence of air, beams of charged particles are free of collision with gas molecules that could contaminate samples. Studies involving the creation of advanced semiconductors can only be done in the absence of air.
Atlas Technologies specializes in creating aluminum vacuum chambers with bi-metal flanges, and although bonding aluminum to stainless steel has been the norm, explosive welding can also bond aluminum and titanium, which avoids the poor UHV properties of stainless steel
Aluminum, which is over ten million times less susceptible to contain hydrogen than stainless steel, also contains much less gas from the atmosphere when opened. Aluminum vacuum chambers retain most gains from bakeouts, making them ideal for industrial processes requiring constant vacuum. Aluminum also has excellent thermal conductivity qualities, slow magnetic permeability, and less resistance to corrosion than stainless steel
In summary, the UHV suitcase integrated with bi-metal flange expertise from Atlas Technologies aims to eliminate contamination when transporting samples from one UHV system to another. The aluminum material makes it lightweight, and with the development of bi-metal flanges, it has eradicated the need for using stainless steel. VolkVac Instruments has developed and used these UHV suitcases to address this particular problem, making the transportation of samples safer and relatively comfortable.
The post VolkVac Instruments uses Atlas Technologies’ bi-metal expertise to create lightweight UHV suitcases appeared first on Physics World.

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Fyfluiddynamics

295

Image Credit: Fyfluiddynamics

The Taum Sauk Dam Failure and Its Legacy

The Taum Sauk Dam, a hydroelectric reservoir, experienced a failure in 2005.
The failure highlighted the challenges of storing water at a higher elevation.
Post-collapse investigations revealed a series of minor issues that led to the catastrophe.
Engineers were reminded that quick stopgap measures are not sufficient.

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Physicsworld

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Magnetoelectric nanodiscs deliver non-invasive brain stimulation in mice

Scientists have developed magnetoelectric nanodiscs (MEND) that can deliver non-invasive brain stimulation in mice.
MENDs consist of a magnetostrictive core and a piezoelectric shell, which convert a magnetic field into electrical potential to stimulate neurons.
The researchers successfully stimulated deep brain regions involved in reward and motor control in the mice.
The next steps for the researchers include further testing and potential application in basic research and future human models.

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Knowridge

Image Credit: Knowridge

Scientists explore ‘dark big bang’ as the birthplace of dark matter

Scientists from Colgate University have explored a new theory called the 'Dark Big Bang' as the possible birthplace of dark matter.
Dark matter, which makes up 25% of the universe's energy, cannot be directly seen but its gravitational effects are evident.
The Dark Big Bang theory suggests that dark matter may have originated from a separate event months after the conventional Big Bang.
The study highlights the prediction of gravitational waves produced by the Dark Big Bang, which can be tested by upcoming experiments.

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Medium

237

Image Credit: Medium

[Oct] ML Community — Highlights and Achievements

Gemini-powered Chrome extension by AI/ML GDE Xiaohu Zhu
GEMINI 002! AMAZING improvements in Price, Speed and Intelligence — Tutorial!
City recommendation model enhanced with sustainability goals and local community interests
Intelligent web application leveraging Gemini to extract key information from various types of receipts
LLM usage for music composition and production
New features of Keras 3.0 that simplify the development of Gen AI models
Building an ML pipeline for breast cancer classification using Kubeflow Pipelines and Vertex AI
Newly published book by AI/ML GDE guides how to build effective neural networks with JAX
Two Kaggle notebooks for featured competitions receiving Silver medals
Overview of vector search, a tutorial on vector search with BigQuery and more
Incorporating audio into a multimodal prompt by AI/ML GDE George Soloupis
Introduction to Gemma Scope, a mechanistic interpretability tool for LLMs

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Arstechnica

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Scientist behind superconductivity claims ousted

Ranga Dias, the physicist behind the controversial claims of high-temperature superconductivity, has been ousted by the University of Rochester.
Two papers reporting the breakthroughs were retracted due to suspicion of scientific misconduct.
A formal investigation concluded that Dias engaged in research misconduct.
Dias' lawsuit claiming biased investigation was dismissed in April.

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Physicsfromtheedge

273

A Potted History of QI

2001: The trigger moment at the Met Office when the concept of Quantised Inertia (QI) began to take shape.
2006: The first paper on QI, predicting the Pioneer anomaly and challenging the need for dark matter.
2012: Application of QI to galaxies, demonstrating that dark matter is not required.
2013: Proposing a mechanism for inertia and the possibility of propellant-less thrust using artificial horizons.

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Fyfluiddynamics

232

Image Credit: Fyfluiddynamics

Ember Bursts Spread Wildfires

Wildfire spread can be initiated by a burst of embers lofted upward.
Researchers have found that large ember bursts are significant in wildfire propagation.
Experiments and high-speed cameras were used to track ember bursts and collect fallen embers.
Wildfire models need to better simulate these rare but impactful events.

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Physicsworld

228

Image Credit: Physicsworld

NASA’s Jet Propulsion Lab announces further staff layoffs

NASA’s Jet Propulsion Laboratory (JPL) has announced another round of staff layoffs.
About 325 people, representing 5% of the lab’s employees, will be affected.
Layoffs are occurring across technical, business, and support areas of the laboratory.
JPL cites budget uncertainty and forecasts of lower spending as reasons for downsizing.

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Knowridge

439

Image Credit: Knowridge

Scientists create world’s first tunable blue laser for sterilization and more

Scientists at Osaka University have developed the world's first compact blue laser with tunable wavelengths, revolutionizing far-ultraviolet (UV) light technology.
This breakthrough innovation could transform sterilization and disinfection in homes, hospitals, and other settings.
The laser operates at a precise, tunable wavelength in the 405 to 460 nanometer range, allowing it to efficiently produce far-UV light for effective sterilization.
This compact and practical blue laser has the potential to be integrated into everyday appliances, ensuring safer and healthier environments for everyone.

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