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Category: quantum physics – Page 50

Quantum ‘curvature’ warps electron flow, hinting at new electronics possibilities

How can data be processed at lightning speed, or electricity conducted without loss? To achieve this, scientists and industry alike are turning to quantum materials, governed by the laws of the infinitesimal. Designing such materials requires a detailed understanding of atomic phenomena, much of which remains unexplored.

A team from the University of Geneva (UNIGE), in collaboration with the University of Salerno and the CNR-SPIN Institute (Italy), has taken a major step forward by uncovering a hidden geometry—until now purely theoretical—that distorts the trajectories of electrons in much the same way gravity bends the path of light. The work, published in Science, opens new avenues for .

Future technologies depend on high-performance materials with unprecedented properties, rooted in quantum physics. At the heart of this revolution lies the study of matter at the microscopic scale—the very essence of . In the past century, exploring atoms, electrons and photons within materials gave rise to transistors and, ultimately, to modern computing.

Scientists Build Quantum Computer That Snaps Together Like LEGOs

A modular quantum processor design shows ~99% fidelity. It paves the way for scalable quantum computing. What do children’s building blocks and quantum computing have in common? The answer is modularity. Constructing a quantum computer as a single, unified device proves extremely difficult. Th

“It’s Its Own New Thing” — Scientists Discover New State of Quantum Matter

UC Irvine scientists identified a novel quantum state with potential for energy-efficient devices. Its radiation resistance makes it particularly valuable for space missions. Researchers at the University of California, Irvine have identified a previously unknown state of quantum matter. Accordin

Quantum entanglement lasts 600 times longer in elusive dark states, study finds

A research team affiliated with UNIST has successfully demonstrated the experimental creation of collective quantum entanglement rooted in dark states—previously confined to theoretical models. The findings are published online in Nature Communications.

Unlike bright states, dark states are highly resistant to external disturbances and exhibit remarkably extended lifetimes, making them promising candidates for next-generation quantum technologies such as and ultra-sensitive sensors.

Led by Professor Je-Hyung Kim in the Department of Physics at UNIST, in collaboration with Dr. Changhyoup Lee from the Korea Research Institute of Standards and Science (KRISS) and Dr. Jin Dong Song from the Korea Institute of Science and Technology (KIST), the team has achieved the controlled induction of dark state-based collective entanglement. Remarkably, this entanglement exhibits a lifetime approximately 600 times longer than that of conventional bright states.

Something from nothing: Physicists model vacuum tunneling in a 2D superfluid

In 1951, physicist Julian Schwinger theorized that by applying a uniform electrical field to a vacuum, electron-positron pairs would be spontaneously created out of nothing, through a phenomenon called quantum tunneling.

The problem with turning the matter-out-of-nowhere theory into Star Trek replicators or transporters? Enormously high electric fields would be required—far beyond the limits of any direct physical experiments.

As a result, the aptly-named Schwinger effect has never been seen.

Graphene reveals electrons that behave like frictionless fluid and break textbook rules

For several decades, a central puzzle in quantum physics has remained unsolved: Could electrons behave like a perfect, frictionless fluid with electrical properties described by a universal quantum number?

This unique property of electrons has been extremely difficult to detect in any material so far because of the presence of atomic defects, impurities, and imperfections in the material.

Researchers at the Department of Physics, Indian Institute of Science (IISc), along with collaborators from the National Institute for Materials Science, Japan, have now finally detected this quantum fluid of electrons in graphene—a material consisting of a single sheet of pure carbon atoms.

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