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Archive for the ‘quantum physics’ category: Page 296

Feb 12, 2023

Can You Trust Your Quantum Simulator? MIT Physicists Report a New Quantum Phenomenon

Posted by in categories: computing, particle physics, quantum physics

Physics gets strange at the atomic scale. Scientists are utilizing quantum analog simulators – laboratory experiments that involve cooling numerous atoms to low temperatures and examining them using precisely calibrated lasers and magnets – to uncover, harness, and control these unusual quantum effects.

Scientists hope that any new understanding gained from quantum simulators will provide blueprints for designing new exotic materials, smarter and more efficient electronics, and practical quantum computers. But in order to reap the insights from quantum simulators, scientists first have to trust them.

That is, they have to be sure that their quantum device has “high fidelity” and accurately reflects quantum behavior. For instance, if a system of atoms is easily influenced by external noise, researchers could assume a quantum effect where there is none. But there has been no reliable way to characterize the fidelity of quantum analog simulators, until now.

Feb 12, 2023

Scientists just made a wormhole to learn more about traversing space and time

Posted by in categories: cosmology, quantum physics

Wormholes are an intriguing bit that most people probably chalk up to science fiction. After all, seeing the Millennium Falcon barreling through hyperspeed in Star Wars is exciting, but there’s no way we could ever actually travel like that, right? Well, it might not actually be that impossible. According to new research, scientists were able to make a man-made wormhole using a quantum processor.

Of course, this isn’t to be misconstrued. They didn’t actually make a wormhole that someone was able to rip through space and time. Instead, they made a small, crummy wormhole on a quantum processor that could help teach us more about traversable wormhole dynamics. As such, the man-made wormhole, even if crummy, could be home to a plethora of data.

The physicists shared a paper detailing their findings on the man-made wormhole in the journal Nature. According to that paper, the “baby wormhole” was a successful attempt at observing traversable wormhole dynamics, something physicists have been trying to understand for decades. And, with scientists recently discovering a way to find wormholes in space, it could be more important than ever.

Feb 11, 2023

A Blast Chiller for the Quantum World

Posted by in categories: particle physics, quantum physics

Through optomechanical experiments, scientists aim to delve into the boundaries of the quantum realm and lay the groundwork for the creation of highly sensitive quantum sensors. In these experiments, everyday visible objects are coupled to superconducting circuits through electromagnetic fields.

To produce functional superconductors, these experiments are conducted inside cryostats at a temperature of around 100 millikelvins. However, this is still far from low enough to truly enter the quantum world. In order to observe quantum effects on large-scale objects, they must be cooled to nearly absolute zero.

Absolute zero is the theoretical lowest temperature on the thermodynamic temperature scale. At this temperature, all atoms of an object are at rest and the object does not emit or absorb energy. The internationally agreed-upon value for this temperature is −273.15 °C (−459.67 °F; 0.00 K).

Feb 11, 2023

Elusive transition shows universal quantum signatures

Posted by in categories: computing, quantum physics

There are stark differences between metals, through which electrons flow freely, and electrical insulators, in which electrons are essentially immobile. And despite the obvious difficulties in finding a way to switch back and forth from a metal to an insulator within one material, physicists are trying to figure out how.

“Say you want to put billions of circuit elements on a tiny chip and then control, at that microscopic scale, whether just one of the elements is metallic or insulating in a controlled fashion,” said Debanjan Chowdhury, assistant professor of physics in the College of Arts and Sciences. “It would be remarkable if you could control the microscopic device at the flick of a switch.”

Digging into recent past experimental results to try to reconcile experiment and theory, Chowdhury and doctoral candidate Sunghoon Kim found that even a tiny amount of imperfection, inherent in any real-life material, plays a key role in revealing the universal physics associated with the experimental metal-to-insulator transition (Physical Review Letters, “Continuous Mott Transition in Moiré Semiconductors: Role of Long-Wavelength Inhomogeneities”). Understanding the physics behind this mysterious phase transition could lead to new complex microscopic circuits, superconductors and exotic insulators that could find use in quantum computing.

Feb 11, 2023

Quantum entanglement maps gluons inside nuclei

Posted by in categories: mapping, quantum physics

Tomographic technique uses pions to analyse photon–gluon collisions.

Feb 11, 2023

Researchers detail never-before-seen properties in a family of superconducting Kagome metals

Posted by in categories: computing, mobile phones, nuclear energy, quantum physics

Dramatic advances in quantum computing, smartphones that only need to be charged once a month, trains that levitate and move at superfast speeds. Technological leaps like these could revolutionize society, but they remain largely out of reach as long as superconductivity—the flow of electricity without resistance or energy waste—isn’t fully understood.

One of the major limitations for real-world applications of this technology is that the materials that make superconducting possible typically need to be at extremely cold temperatures to reach that level of electrical efficiency. To get around this limit, researchers need to build a clear picture of what different superconducting materials look like at the atomic scale as they transition through different states of matter to become superconductors.

Scholars in a Brown University lab, working with an international team of scientists, have moved a small step closer to cracking this mystery for a recently discovered family of superconducting Kagome metals. In a new study, they used an innovative new strategy combining nuclear magnetic resonance imaging and a quantum modeling theory to describe the microscopic structure of this superconductor at 103 degrees Kelvin, which is equivalent to about 275 degrees below 0 degrees Fahrenheit.

Feb 11, 2023

10 Upcoming Future Technologies: How They’ll Impact Your Life

Posted by in categories: 3D printing, augmented reality, biotech/medical, blockchains, cybercrime/malcode, employment, health, internet, quantum physics, robotics/AI, virtual reality

Top 10 upcoming future technologies | trending technologies | 10 upcoming tech.

Future technologies are currently developing at an acclerated rate. Future technology ideas are being converted into real life at a very fast pace.

Continue reading “10 Upcoming Future Technologies: How They’ll Impact Your Life” »

Feb 11, 2023

Scientists Successfully Sent A Particle Back in Time Using A Quantum Computer

Posted by in categories: computing, information science, particle physics, quantum physics, time travel

As fantastic as this may seem this is not an impossible occurrence.


Before Einstein, time travel was just a story, but his calculations led us into the quantum world and gave us a more complicated picture of time. Kurt Godel found that Einstein’s equations made it possible to go back in time. What’s up? None of the ideas about how to go back in time were ever physically possible.

Before sending a particle back in time, scientists from ETH Zurich, Argonne National Laboratory, and Moscow Institute of Physics and Technology asked, Why stick to physical grounds?

Continue reading “Scientists Successfully Sent A Particle Back in Time Using A Quantum Computer” »

Feb 11, 2023

The Atom and the Doctrine of Identity: Quantum Pioneer Erwin Schrödinger on Bridging Eastern Philosophy and Western Science to Illuminate Consciousness

Posted by in categories: neuroscience, particle physics, quantum physics, science

Who was rumored to be a pedophile.


“The over-all number of minds is just one.”

Feb 10, 2023

Quantum tunneling to boost memory consolidation in AI

Posted by in categories: biological, chemistry, neuroscience, quantum physics, robotics/AI

Artificial intelligence and machine learning have made tremendous progress in the past few years including the recent launch of ChatGPT and art generators, but one thing that is still outstanding is an energy-efficient way to generate and store long-and short-term memories at a form factor that is comparable to a human brain. A team of researchers in the McKelvey School of Engineering at Washington University in St. Louis has developed an energy-efficient way to consolidate long-term memories on a tiny chip.

Shantanu Chakrabartty, the Clifford W. Murphy Professor in the Preston M. Green Department of Electrical & Systems Engineering, and members of his lab developed a relatively simple device that mimics the dynamics of the brain’s synapses, connections between that allows signals to pass information. The artificial synapses used in many modern AI systems are relatively simple, whereas biological synapses can potentially store complex memories due to an exquisite interplay between different chemical pathways.

Chakrabartty’s group showed that their artificial synapse could also mimic some of these dynamics that can allow AI systems to continuously learn new tasks without forgetting how to perform old tasks. Results of the research were published Jan. 13 in Frontiers in Neuroscience.