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Category: quantum physics – Page 502

Quantum Puzzle Solved: The Great Mystery of Quantized Vortex Motion

Explaining the interaction between quantized vortices and normal fluids.

Researchers from Osaka Metropolitan University, Florida State University.

Florida State University (Florida State or FSU) is a public space-grant and sea-grant research university in Tallahassee, Florida, United States that was established in 1851. The university comprises 16 separate colleges and more than 110 centers, facilities, labs, and institutes that offer more than 360 programs of study, including professional school programs.

Quantumness of water molecules might explain unexpected behaviors

Year 2013 Basically they found out water is quantum which could then be turned into a water quantum computer.

Water is vital to life as we know it, but there is still a great deal unknown when it comes to correctly modeling its properties. Now researchers have discovered room-temperature water may be even more bizarre than once suspected — quantum physics suggest its hydrogen atoms can travel surprisingly farther than before thought, report findings detailed in the Proceedings of the National Academy of Sciences.

Water is just made of two hydrogen atoms and an oxygen atom, but despite its apparent simplicity, liquid water displays a remarkable number of unusual properties, such as how it decreases in density upon freezing, and the existence of some 19 different forms of ice. Scientists traditionally ascribe water’s peculiar behavior to the hydrogen bond. Water is polar — partial electric charges separate within the molecule, leading to slightly positively charged hydrogen ends and a negatively charged oxygen middle. As such, the hydrogens in one water molecule can get attracted to the oxygen in another, a hydrogen bond that can help explain why water has such a high boiling point, for example.

All of water’s anomalies, together with its unquestionably vital role in climate and life on Earth, have led to intense research around the globe, but still much remains unknown about it. To shed light on water’s behavior, materials scientist Michele Ceriotti at the University of Oxford in England and his colleagues modeled how the atomic nuclei of water’s hydrogen might behave in a quantum way — that is, not like points as the above explanation of hydrogen bonding from classical physics would suggest, but as more delocalized, cloud-like objects.

Microsoft claims to have achieved first milestone in creating a reliable and practical quantum computer

A team of researchers at Microsoft Quantum has reportedly achieved a first milestone toward creating a reliable and practical quantum computer. In their paper, published in the journal Physical Review B, the group describes the milestone and their plans to build a reliable quantum computer over the next 25 years.

Physicists and computer engineers are working toward building a reliable, useful quantum computer. Such efforts have been hampered, however, by error rates. In this new effort, the team at Microsoft suggests that quantum computer development is following a trajectory similar to that of traditional computers.

In the beginning, new concepts were followed by a series of hardware upgrades that have led to the machines of today. Likewise, they suggest that while current approaches used to represent logical qubits, such as a spin transmon, or a gatemon, have been useful as learning devices, none of them are scalable. They suggest a new approach must be found that allows for scaling.

Physicists Discover a New State of Matter Hidden in The Quantum World

You’re familiar with the states of matter we encounter daily – such as solid, liquid, and gas – but in more exotic and extreme conditions, new states can appear, and scientists from the US and China just found one.

They’re calling it the chiral bose-liquid state, and as with every new arrangement of particles we discover, it can tell us more about the fabric and the mechanisms of the Universe around us – and in particular, at the super-small quantum scale.

States of matter describe how particles can interact with one another, giving rise to structures and various ways of behaving. Lock atoms in place, and you have a solid. Allow them to flow, you have a liquid or gas. Force charged partnerships apart, you have a plasma.

Intel releases 12-qubit silicon quantum chip to the quantum community

Intel – the world’s biggest computer-chip maker – has released its newest quantum chip and has begun shipping it to quantum scientists and engineers to use in their research. Dubbed Tunnel Falls, the chip contains a 12-qubit array and is based on silicon spin-qubit technology.

The distribution of the quantum chip to the quantum community is part of Intel’s plan to let researchers gain hands-on experience with the technology, while at the same time enabling new quantum research.

The first quantum labs to get access to the chip include the University of Maryland, Sandia National Laboratories, the University of Rochester and the University of Wisconsin-Madison.

University of Washington team detects atomic ‘breathing’ for quantum computing breakthrough

Most of us don’t think of atoms as having their own unique vibrations, but they do. In fact, it’s a feature so fundamental to nature’s building blocks that a team of University of Washington researchers recently observed and used this phenomenon in their research study. By studying the light atoms emitted when stimulated by a laser, they were able to detect vibrations sometimes referred to as atomic “breathing.”

The result is a breakthrough that may one day allow us to build better tools for many kinds of quantum technologies.

Led by Mo Li, a professor of photonics and nano devices in both the UW Department of Electrical and Computer Engineering and the UW Physics Department, the researchers set out to build a better quantum emitter, or QE, one that could be incorporated into optical circuits.

Flow of water on a carbon surface is governed by quantum friction, says study

Water and carbon make a quantum couple: the flow of water on a carbon surface is governed by an unusual phenomenon dubbed quantum friction. A new work published in Nature Nanotechnology experimentally demonstrates this phenomenon—which was predicted in a previous theoretical study—at the interface between liquid water and graphene, a single layer of carbon atoms. Advanced ultrafast techniques were used to perform this study. These results could lead to applications in water purification and desalination processes and maybe even to liquid-based computers.

For the last 20 years, scientists have been puzzled by how water behaves near carbon surfaces. It may flow much faster than expected from conventional flow theories or form strange arrangements such as square ice. Now, an international team of researchers from the Max Plank Institute for Polymer Research of Mainz (Germany), the Catalan Institute of Nanoscience and Nanotechnology (ICN2, Spain), and the University of Manchester (England), reports in the study published in Nature Nanotechnology on June 22, 2023, that water can interact directly with the carbon’s electrons—a quantum phenomenon that is very unusual in .

A liquid, such as water, is made up of that randomly move and constantly collide with each other. A solid, in contrast, is made of neatly arranged atoms that bathe in a cloud of electrons. The solid and the liquid worlds are assumed to interact only through collisions of the liquid molecules with the solid’s atoms—the liquid molecules do not “see” the solid’s electrons. Nevertheless, just over a year ago, a paradigm-shifting theoretical study proposed that at the water-carbon interface, the liquid’s molecules and the solid’s electrons push and pull on each other, slowing down the liquid flow: this new effect was called quantum friction. However, the theoretical proposal lacked experimental verification.

IonQ moves ahead with Forte quantum computers and its facility in Seattle area

Maryland-based IonQ is expanding the commercial availability of its next-generation Forte quantum computer — and ramping up its research and production facility in the Seattle area to work on the next, next generation.

Forte is expected to bring the quantum frontier closer to the point that customers can start running real-world applications rather than merely experimenting with quantum capabilities, said Chris Monroe, co-founder and chief scientist at IonQ.

“We’re not talking a decade away here anymore,” he told GeekWire.

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