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Category: quantum physics – Page 245

Einstein Meets Newton: Scientists Demonstrate New Aspect of Wave-Particle Duality

Linköping University’s experiment confirms a key theoretical link between quantum mechanics and information theory, highlighting future implications for quantum technology and secure communication.

Researchers at Linköping University and their collaborators have successfully confirmed a decade-old theory linking the complementarity principle—a fundamental concept in quantum mechanics—with information theory. Their study, published in the journal Science Advances, provides valuable insights for understanding future quantum communication, metrology, and cryptography.

“Our results have no clear or direct application right now. It’s basic research that lays the foundation for future technologies in quantum information and quantum computers. There’s enormous potential for completely new discoveries in many different research fields,” says Guilherme B Xavier, researcher in quantum communication at Linköping University, Sweden.

RAMBO Reveals Magnetic Phenomenon Useful for Quantum Simulation and Sensing

Sometimes things are a little out of whack, and it turns out to be exactly what you need.

That was the case when orthoferrite crystals turned up at a Rice University laboratory slightly misaligned. Those crystals inadvertently became the basis of a discovery that should resonate with researchers studying spintronics-based quantum technology.

Rice physicist Junichiro Kono, alumnus Takuma Makihara and their collaborators found an orthoferrite material, in this case yttrium iron oxide, placed in a high magnetic field showed uniquely tunable, ultrastrong interactions between magnons in the crystal.

Quantum research sheds new light on how cells communicate

Have you ever thought that light might hold a key to life’s mysteries? One hundred years ago, Alexander Gurwitsch dared to propose that living cells emit faint ultraviolet light, invisible to the naked eye, to communicate with and stimulate one another.

It was an idea so ahead of its time that many dismissed it outright. Without a physical theory to back it up, his idea was relegated to the chronicles of history. Yet when I encountered his work, I couldn’t help but ask the question: What if the UV effect is quantum mechanical? Armed with modern quantum theory, I began to uncover a new quantum dimension to life itself.

Engineers achieve quantum teleportation over active internet cables

Engineers at Northwestern University have demonstrated quantum teleportation over a fiber optic cable already carrying Internet traffic. This feat, published in the journal Optica, opens up new possibilities for combining quantum communication with existing Internet infrastructure. It also has major implications for the field of advanced sensing technologies and quantum computing applications.

Quantum teleportation, a process that harnesses the power of quantum entanglement, enables an ultra-fast and secure method of information sharing between distant network users. Unlike traditional communication methods, quantum teleportation does not require the physical transmission of particles. Instead, it relies on entangled particles exchanging information over great distances.

Nobody thought it would be possible to achieve this, according to Professor Prem Kumar, who led the study. “Our work shows a path towards next-generation quantum and classical networks sharing a unified fiber optic infrastructure. Basically, it opens the door to pushing quantum communications to the next level.”

Almost three quarters of adolescents experience depression or anxiety

MIT physicists and colleagues have for the first time measured the geometry, or shape, of electrons in solids at the quantum level. Scientists have long known how to measure the energies and velocities of electrons in crystalline materials, but until now, those systems’ quantum geometry could only be inferred theoretically, or sometimes not at all.

The work, reported in the November 25 issue of Nature Physics, “opens new avenues for understanding and manipulating the quantum properties of materials,” says Riccardo Comin, MIT’s Class of 1947 Career Development Associate Professor of Physics and leader of the work.

“We’ve essentially developed a blueprint for obtaining some completely new information that couldn’t be obtained before,” says Comin, who is also affiliated with MIT’s Materials Research Laboratory and the Research Laboratory of Electronics.

Black holes may not exist as we know them, but fuzzballs might

String theory proposes that all particles and forces are made of tiny, vibrating strings, which form the fundamental building blocks of the universe. This framework offers a potential solution to the long-standing paradoxes surrounding black holes, such as their singularities—infinitely tiny points where the laws of physics break down—and the Hawking radiation paradox, which questions the fate of information falling into black holes.

Fuzzballs replace the singularity with an ultra-compressed sphere of strings, likened to a neutron star’s structure but composed of subatomic strings instead of particles. While the theory remains incomplete, its implications are significant, offering an alternative explanation for phenomena previously attributed to black holes.

To differentiate between black holes and fuzzballs, researchers are turning to gravitational waves—ripples in spacetime caused by cosmic collisions. When black holes merge, they emit specific gravitational wave signatures that have so far aligned perfectly with Einstein’s general relativity. However, fuzzballs might produce subtle deviations from these patterns, providing a way to confirm their existence.

Quantum Mechanical Mass mechanism ~ Why Mass increases

It is important to have a mechanism that forms Mass, because if we had a concept of how Mass is formed it would give us a deeper understanding of gravity and help us unity Relativity and Quantum Mechanics.

In this theory Mass increases with speed, because Photon ∆E=hf energy is continuously transforming potential energy into the kinetic energy of matter in the form of electrons.

At low speed kinetic energy is one-half the mass times the velocity squared Eₖ=½mv², but at higher speed the curve for increasing energy starts to look just like the curve for increasing Mass.

This is why energy is equal to mass times the speed of light squared E=MC²

Kinetic energy is the energy of motion, of what is actually happening.

Energy and momentum are conserved as the future unfolds with each photon-electron oscillation or vibration.

Continue reading “Quantum Mechanical Mass mechanism ~ Why Mass increases” | >

The theory of quantum politics

As the multi-polar world of global politics becomes ever more complex, who better to cast light on its workings than a physicist turned President? Join Armen Sarkissian, former President of Armenia, as he argues for his new theory of quantum politics, in which individuals are necessarily connected across space and our world is dominated by randomness, uncertainty, and possibility.

Can Entangled Particles Communicate Faster than Light?

Entanglement is perhaps one of the most confusing aspects of quantum mechanics. On its surface, entanglement allows particles to communicate over vast distances instantly, apparently violating the speed of light. But while entangled particles are connected, they don’t necessarily share information between them.

In quantum mechanics, a particle isn’t really a particle. Instead of being a hard, solid, precise point, a particle is really a cloud of fuzzy probabilities, with those probabilities describing where we might find the particle when we go to actually look for it. But until we actually perform a measurement, we can’t exactly know everything we’d like to know about the particle.

These fuzzy probabilities are known as quantum states. In certain circumstances, we can connect two particles in a quantum way, so that a single mathematical equation describes both sets of probabilities simultaneously. When this happens, we say that the particles are entangled.

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