Archive for the ‘quantum physics’ category: Page 10

Jun 16, 2023

IBM’s Eagle quantum computer just beat a supercomputer at complex math

Posted by in categories: mathematics, quantum physics, supercomputing

The company now plans to power its quantum computers with a minimum of 127 qubits.

IBM’s Eagle quantum computer has outperformed a conventional supercomputer when solving complex mathematical calculations. This is also the first demonstration of a quantum computer providing accurate results at a scale of 100+ qubits, a company press release said.

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Jun 15, 2023

Quantum interference of light: Anomalous phenomenon found

Posted by in categories: particle physics, quantum physics

A counterintuitive facet of the physics of photon interference has been uncovered by three researchers of Université libre de Bruxelles, Belgium. In an article published this month in Nature Photonics, they have proposed a thought experiment that utterly contradicts common knowledge on the so-called bunching property of photons. The observation of this anomalous bunching effect seems to be within reach of today’s photonic technologies and, if achieved, would strongly impact on our understanding of multiparticle quantum interferences.

One of the cornerstones of quantum physics is Niels Bohr’s complementarity principle, which, roughly speaking, states that objects may behave either like particles or like waves. These two mutually exclusive descriptions are well illustrated in the iconic , where particles are impinging on a plate containing two slits. If the trajectory of each particle is not watched, one observes wave-like interference fringes when collecting the particles after going through the slits. But if the trajectories are watched, then the fringes disappear and everything happens as if we were dealing with particle-like balls in a .

As coined by physicist Richard Feynman, the interference fringes originate from the absence of “which-path” information, so that the fringes must necessarily vanish as soon as the experiment allows us to learn that each particle has taken one or the other path through the left or right slit.

Jun 15, 2023

For experimental physicists, quantum frustration leads to fundamental discovery

Posted by in categories: particle physics, quantum physics

A team of physicists, including University of Massachusetts assistant professor Tigran Sedrakyan, recently announced in the journal Nature that they have discovered a new phase of matter. Called the “chiral Bose-liquid state,” the discovery opens a new path in the age-old effort to understand the nature of the physical world.

Under everyday conditions, matter can be a solid, liquid or gas. But once you venture beyond the everyday—into temperatures approaching absolute zero, things smaller than a fraction of an atom or which have extremely low states of energy—the world looks very different. “You find quantum states of matter way out on these fringes,” says Sedrakyan, “and they are much wilder than the three classical states we encounter in our everyday lives.”

Sedrakyan has spent years exploring these wild quantum states, and he is particularly interested in the possibility of what physicists call “band degeneracy,” “moat bands” or “kinetic frustration” in strongly interacting quantum matter.

Jun 15, 2023

Nobel winner Anton Zeilinger: ‘Physicists can make measurements, but cannot say anything about the essence of reality’

Posted by in categories: computing, quantum physics

The Austrian scientist, a pioneer of quantum teleportation, reflects on God, the nature of things and the future of computing.

Jun 15, 2023

Intel Enters the Quantum Computing Horse Race With 12-Qubit Chip

Posted by in categories: computing, quantum physics

But before quantum physics revolutionizes computing, Intel and rivals will have to learn how to make vastly more powerful machines.

Jun 14, 2023

IBM quantum computer passes calculation milestone

Posted by in categories: computing, quantum physics

Dan this made me think of you.

‘Benchmark’ experiment suggests quantum computers could have useful real-world applications within two years.

Jun 14, 2023

IBM quantum computer beat a supercomputer in a head-to-head test

Posted by in categories: quantum physics, supercomputing

Researchers at IBM pitted their 127-qubit Eagle quantum computer against a conventional supercomputer in a challenge to perform a complex calculation – and the quantum computer won.

By Karmela Padavic-Callaghan

Jun 14, 2023

Quantum frustration leads to a new state of matter: chiral Bose-liquid state

Posted by in categories: particle physics, quantum physics

A team of theoretical and experimental physicists has made a fundamental discovery of a new state of matter.

In our day-to-day life, we encounter three types of matter—solid, liquid, and gas. But, when we move beyond the realm of daily life, we see exotic or quantum states of matter, such as plasma, time crystals, and Bose-Einstein condensate.

These are observed when we go to low temperatures near absolute zero or on atomic and subatomic scales, where particles can have very low energies. Scientists are now claiming that they have found a new phase of matter.

Jun 14, 2023

China’s quantum leap — Made in Germany

Posted by in categories: military, quantum physics

Germany’s oldest university hosts many scientists conducting groundbreaking work. Little did they know how they would become entangled in China’s quantum military strategy. A DW investigation with CORRECTIV.

Jun 13, 2023

‘More than Moore’ webinar explores the future of neuromorphic and quantum computing

Posted by in categories: computing, quantum physics

Four experts explore technologies that could play roles in computers of the future.

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