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Dec 11, 2024

Rethinking the quantum chip: Engineers present new design for superconducting quantum processor

Posted by in categories: computing, engineering, quantum physics

Researchers at the UChicago Pritzker School of Molecular Engineering (UChicago PME) have realized a new design for a superconducting quantum processor, aiming at a potential architecture for the large-scale, durable devices the quantum revolution demands.

Unlike the typical quantum chip design that lays the information-processing qubits onto a 2D grid, the team from the Cleland Lab has designed a modular quantum processor comprising a reconfigurable router as a central hub. This enables any two qubits to connect and entangle, where in the older system, qubits can only talk to the qubits physically nearest to them.

“A quantum computer won’t necessarily compete with a classical computer in things like memory size or CPU size,” said UChicago PME Prof. Andrew Cleland.

Dec 11, 2024

Scientists develop cost-effective lasers for extended short-wave infrared applications

Posted by in categories: chemistry, computing, quantum physics

Current laser technologies for the extended short-wave infrared (SWIR) spectral range rely on expensive and complex materials, limiting their scalability and affordability. To address these challenges, ICFO researchers have presented a novel approach based on colloidal quantum dots in an Advanced Materials article. The team managed to emit coherent light (a necessary condition to create lasers) in the extended SWIR range with large colloidal quantum dots made of lead sulfide (PbS).

This new CQD-based technology offers a solution to the aforementioned challenges while maintaining compatibility with silicon CMOS platforms (the technology used for constructing integrated circuit chips) for on-chip integration.

Their PbS colloidal quantum dots are the first semiconductor lasing material to cover such a broad wavelength range. Remarkably, the researchers accomplished this without altering the dots’ chemical composition. These results pave the way towards the realization of more practical and compact lasers.

Dec 10, 2024

New quantum computing milestone smashes entanglement world record

Posted by in categories: computing, quantum physics

Researchers have set a new record for quantum entanglement — bringing reliable quantum computers a step closer to reality. The scientists successfully entangled 24 “logical qubits” — low-error quantum bits of information created by combining multiple physical qubits. This is the highest number ever achieved to date.

They also demonstrated that logical qubits can maintain error correction as the number of qubits increases, a crucial step toward larger, more fault-tolerant quantum systems. The researchers detailed their work in a study published Nov. 18 on the preprint database arXiv.

Dec 10, 2024

By tweaking materials, scientists create transistors that remember

Posted by in categories: computing, materials

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Dec 10, 2024

Advanced Simulations Clarify Neutron Star Dynamics and Supernova Physics

Posted by in categories: computing, cosmology, particle physics

Researchers have developed a new computational method to explore the neutron matter inside neutron stars at densities higher than previously studied.

This method provides insights into the behavior of neutrinos during supernova explosions, enhancing the accuracy of simulations and potentially improving our understanding of such cosmic events.

Advances in Neutron Matter Simulation.

Dec 10, 2024

New electric field signals strong potential for assorted devices

Posted by in categories: computing, futurism

Researchers from City University of Hong Kong (CityUHK) and local collaborators have made a groundbreaking discovery of a new vortex electric field, poised to revolutionize future electronic, magnetic, and optical devices. This research holds immense promise for significantly enhancing the performance of various devices, particularly by improving memory stability and accelerating computing speeds.

Read Full Story.

Dec 10, 2024

Shaking felt across Central California following magnitude 5.5 earthquake in Nevada

Posted by in categories: computing, electronics

SACRAMENTO — A magnitude 5.5 earthquake that struck in a remote area of Nevada on Monday afternoon sent shaking throughout Central California, including the Sacramento area.

In Sacramento, one person saw ornaments on a Christmas tree sway, as did some blinds for less than a minute. Water sloshed in a swimming pool, another person said. In Davis, a computer swayed for just a few seconds and a desk chair was jolted, while a young man reported feeling his bed sway and an unnerved poodle sought comfort.

In Reno, about 50 miles northwest of the quake’s epicenter, someone at KTVN-TV captured a video of the star on the newsroom’s Christmas tree still quivering — barely — as staffers scrambled to cover the earthquake. One person could be heard saying they hadn’t felt anything.

Dec 10, 2024

Battery-like computer memory keeps working above 1,000°F

Posted by in category: computing

We tie our shoes, we put on neckties, we wrestle with power cords. Yet despite deep familiarity with knots, most people cannot tell a weak knot from a strong one by looking at them, new Johns Hopkins University research finds.

Researchers showed people pictures of two and asked them to point to the strongest one. They couldn’t.

They showed people videos of each knot, where the knots spin slowly so they could get a good long look. They still failed.

Dec 10, 2024

Continuous-wave electrically pumped multi-quantum-well laser based on group-IV semiconductors

Posted by in categories: computing, quantum physics

The authors demonstrate electrically pumped continuous-wave operation of a SiGeSn/GeSn lasers. The devices are based on a multi-quantum-well design in a small footprint micro-disk cavity resulting in driving parameters compatible with on-chip operation.

Dec 10, 2024

Brain-Computer Interface: No Open Brain Surgery Required 🧠

Posted by in categories: biotech/medical, computing, health, neuroscience

Synchron has developed a Brain-Computer Interface that uses pre-existing technologies such as the stent and catheter to allow insertion into the brain without the need for open brain surgery.

Read the CNET article for more info:
You Might Not Need Open Brain Surgery to Get Mind Control https://cnet.co/3sZ7k67

Continue reading “Brain-Computer Interface: No Open Brain Surgery Required 🧠” »

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