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Category: quantum physics – Page 2

Until now, creating quantum superpositions of ultra-cold atoms has been a real headache, too slow to be realistic in the laboratory. Researchers at the University of Liège have now developed an innovative new approach combining geometry and “quantum control,” which drastically speeds up the process, paving the way for practical applications in quantum technologies.

The paper is published in the journal Physical Review A.

Imagine being in a supermarket with a cart filled to the brim. The challenge: get to the checkout before the others, without dropping your products on the corners. The solution? Choose a route with as few corners as possible to go faster without slowing down. That’s exactly what Simon Dengis, a doctoral student at the University of Liège, has managed to do, but in the world of quantum physics.

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The effects of quantum mechanics—the laws of physics that apply at exceedingly small scales—are extremely sensitive to disturbances. This is why quantum computers must be held at temperatures colder than outer space, and only very, very small objects, such as atoms and molecules, generally display quantum properties.

By quantum standards, are quite hostile environments: they’re warm and chaotic, and even their fundamental components—such as cells—are considered very large.

But a group of theoretical and experimental researchers has discovered a distinctly quantum effect in biology that survives these difficult conditions and may also present a way for the brain to protect itself from like Alzheimer’s.

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Such findings wouldn’t have been possible using the traditional resistivity approach. “We demonstrate that the magneto-thermopower detection of fractional quantum Hall states is more sensitive than resistivity measurements,” the researchers note.

“Overall, our findings reveal the unique capabilities of thermopower measurements, introducing a new platform for experimental and theoretical investigations of correlated and topological states in graphene systems, including moiré materials,” Ghahari concluded.

Hopefully, these findings will help us realize the true potential of the FQH effect. However, whether the same approach could be used to detect other exotic quantum states remains to be explored through further research.

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In a striking development, researchers have created a quantum algorithm that allows quantum computers to better understand and preserve the very phenomenon they rely on – quantum entanglement. By introducing the variational entanglement witness (VEW), the team has boosted detection accuracy while

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Argonne scientists have unveiled new methods for controlling material properties. The breakthrough enables researchers to design materials with customized properties, offering unprecedented control over their optical and electronic behaviors. Imagine building a Lego tower with perfectly aligned

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A quantum machine has used entangled qubits to generate a number certified as truly random for the first time, demonstrating a handy function that’s physically beyond even the most powerful supercomputer.

Researchers from the US and UK repurposed existing quantum supremacy experiments on Quantinuum’s 56-qubit computer to roll God’s dice. The result was a number so random, no amount of physics could have predicted it.

Quantum technology is becoming critical for secure electronic communication as cybersecurity threats increase.

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Biological systems, once thought too chaotic for quantum effects, may be quietly leveraging quantum mechanics to process information faster than anything man-made.

New research suggests this isn’t just happening in brains, but across all life, including bacteria and plants.

Schrödinger’s legacy inspires a quantum leap.

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Researchers have discovered an unexpected superconducting transition in extremely thin films of niobium diselenide (NbSe2). Publishing in Nature Communications, they found that when these films become thinner than six atomic layers, superconductivity no longer spreads evenly throughout the material, but instead becomes confined to its surface.

This discovery challenges previous assumptions and could have important implications for understanding and developing advanced quantum technologies.

Researchers at the Hebrew University of Jerusalem have made a surprising discovery about how superconductivity behaves in extremely thin materials. Superconductors are materials that allow electric current to flow without resistance, which makes them incredibly valuable for technology. Usually, the properties of superconductors change predictably when the materials become thinner; however, this study found something unexpected.

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