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Archive for the ‘quantum physics’ category: Page 14

Dec 6, 2023

Reimagining the Cosmos: New Theory Unites Einstein’s Gravity With Quantum Mechanics

Posted by in categories: particle physics, quantum physics

A radical theory that consistently unifies gravity and quantum mechanics while preserving Einstein’s classical concept of spacetime is announced today in two papers published simultaneously by UCL (University College London) physicists.

Modern physics is founded upon two pillars: quantum theory on the one hand, which governs the smallest particles in the universe, and Einstein’s theory of general relativity on the other, which explains gravity through the bending of spacetime. But these two theories are in contradiction with each other and a reconciliation has remained elusive for over a century.

Challenging the status quo: a new theoretical approach.

Dec 6, 2023

A method to resolve quantum interference between photoionization pathways with attosecond resolution

Posted by in categories: particle physics, quantum physics

The field of attosecond physics was established with the mission of exploring light–matter interactions at unprecedented time resolutions. Recent advancements in this field have allowed physicists to shed new light on the quantum dynamics of charge carriers in atoms and molecules.

A technique that has proved particularly valuable for conducting research in this field is RABBITT (i.e., the Reconstruction of Attosecond Beating By Interference of Two-photon Transitions). This promising tool was initially used to characterize , as part of a research effort that won this year’s Nobel Prize, yet it has since also been employed to measure other ultrafast physical phenomena.

Researchers at East China Normal University and Queen’s University Belfast recently built on the RABBITT technique to distinctly measure individual contributions in photoionization. Their paper, published in Physical Review Letters, introduces a new highly promising method for conducting attosecond physics research.

Dec 6, 2023

IBM finally unveils quantum powerhouse, a 1,000+ qubit processor

Posted by in categories: biotech/medical, mathematics, quantum physics, supercomputing

With a processor that has fewer qubits, IBM has improved error correction, paving the way for the use of these processors in real life.


IBM has unveiled its much-awaited 1,000+ qubit quantum processor Condor, alongside a utility-scale processor dubbed IBM Quantum Heron at its Quantum Summit in New York. The latter is the first in the series of utility-scale quantum processors that IBM took four years to build, the company said in a press release.

Continue reading “IBM finally unveils quantum powerhouse, a 1,000+ qubit processor” »

Dec 5, 2023

Radical new theory finally unites gravity, spacetime, and the quantum realm

Posted by in categories: innovation, quantum physics

In a groundbreaking announcement, physicists from University College London (UCL) have presented a radical theory that unifies the realms of gravity and quantum mechanics while preserving the classical concept of spacetime, as outlined by Einstein.

This innovative approach, detailed in two simultaneously published papers, challenges over a century of scientific consensus and proposes a revolutionary perspective on the fundamental nature of our universe.

Modern physics rests on two contradictory pillars: quantum theory, which rules the microscopic world, and Einstein’s theory of general relativity, explaining gravity through spacetime curvature. These theories, despite their individual successes, have remained irreconcilable, creating a significant rift in our understanding of the universe.

Dec 4, 2023

‘We’re hitting new limits.’ NC quantum computing bullish on a coveted breakthrough

Posted by in categories: computing, quantum physics

IonQ and IBM lead North Carolina quantum computing push with Duke Quantum Center and NC State quantum hub in Durham and Raleigh.

Dec 4, 2023

A new quantum algorithm for classical mechanics with an exponential speedup

Posted by in categories: computing, information science, mapping, quantum physics

Quantum computers promise to solve some problems exponentially faster than classical computers, but there are only a handful of examples with such a dramatic speedup, such as Shor’s factoring algorithm and quantum simulation. Of those few examples, the majority of them involve simulating physical systems that are inherently quantum mechanical — a natural application for quantum computers. But what about simulating systems that are not inherently quantum? Can quantum computers offer an exponential advantage for this?

In “Exponential quantum speedup in simulating coupled classical oscillators”, published in Physical Review X (PRX) and presented at the Symposium on Foundations of Computer Science (FOCS 2023), we report on the discovery of a new quantum algorithm that offers an exponential advantage for simulating coupled classical harmonic oscillators. These are some of the most fundamental, ubiquitous systems in nature and can describe the physics of countless natural systems, from electrical circuits to molecular vibrations to the mechanics of bridges. In collaboration with Dominic Berry of Macquarie University and Nathan Wiebe of the University of Toronto, we found a mapping that can transform any system involving coupled oscillators into a problem describing the time evolution of a quantum system. Given certain constraints, this problem can be solved with a quantum computer exponentially faster than it can with a classical computer.

Dec 4, 2023

New theory may finally unite Einstein’s gravity with the quantum world

Posted by in category: quantum physics

ISAAC YOUNG

A century-long problem solved?

Dec 4, 2023

AI Can Recreate Images From Human Brain Waves With ‘Over 75% Accuracy’

Posted by in categories: quantum physics, robotics/AI

Scientists were reportedly able to use artificial intelligence (AI) to reconstruct images solely from people’s brain activity with over 75% accuracy for the first time ever.

According to Japanese newspaper The Mainichi, recreating images from brain activity is usually only possible when a subject is actually seeing the images with their own eyes, or when the type of images, such as faces, letters or simple figures, were specified.

However, a team of researchers at the National Institutes for Quantum Science and Technology (QST) in Japan have now demonstrated that it’s possible to accurately reconstruct complex images with AI — based almost solely from a person’s thoughts.

Dec 4, 2023

IBM releases first-ever 1,000-qubit quantum chip

Posted by in categories: computing, quantum physics

The company announces its latest huge chip — but will now focus on developing smaller chips with a fresh approach to ‘error correction’

Dec 4, 2023

‘Wobbly spacetime’ may help resolve contradictory physics theories

Posted by in category: quantum physics

Scientist proposes framework for reconciling mathematically incompatible theories of quantum mechanics and Einstein’s gravity.

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