Quantum effects prevent trapped atoms from thermalizing, despite being repeatedly jiggled through laser excitation.
Category: quantum physics – Page 9
Nobel Prize in physics awarded for ultracold electronics research that launched a quantum technology
Quantum mechanics describes the weird behavior of microscopic particles. Using quantum systems to perform computation promises to allow researchers to solve problems in areas from chemistry to cryptography that have so many possible solutions that they are beyond the capabilities of even the most powerful nonquantum computers possible.
Quantum computing depends on researchers developing practical quantum technologies. Superconducting electrical circuits are a promising technology, but not so long ago it was unclear whether they even showed quantum behavior. The 2025 Nobel Prize in physics was awarded to three scientists for their work demonstrating that quantum effects persist even in large electrical circuits, which has enabled the development of practical quantum technologies.
I’m a physicist who studies superconducting circuits for quantum computing and other uses. The work in my field stems from the groundbreaking research the Nobel laureates conducted.
The playbook for perfect polaritons: Rules for creating quasiparticles that can power optical computers, quantum devices
Light is fast, but travels in long wavelengths and interacts weakly with itself. The particles that make up matter are tiny and interact strongly with each other, but move slowly. Together, the two can combine into a hybrid quasiparticle called a polariton that is part light, part matter.
In a new paper published today in Chem, a team of Columbia chemists has identified how to combine matter and light to get the best of both worlds: polaritons with strong interactions and fast, wavelike flow. These distinctive behaviors can be used to power optical computers and other light-based quantum devices.
“We’ve written a playbook for the ‘perfect’ polariton that will guide our research, and we hope, that of the entire field working on strong light-matter interactions,” said Milan Delor, associate professor of chemistry at Columbia.
Freely levitating rotor spins out ultraprecise sensors for classical and quantum physics
With a clever design, researchers have solved eddy-current damping in macroscopic levitating systems, paving the way for a wide range of sensing technologies.
Levitation has long been pursued by stage magicians and physicists alike. For audiences, the sight of objects floating midair is wondrous. For scientists, it’s a powerful way of isolating objects from external disturbances.
This is particularly useful in the case of rotors, as their torque and angular momentum, used to measure gravity, gas pressure, momentum, among other phenomena in both classical and quantum physics, can be strongly influenced by friction. Freely suspending the rotor could drastically reduce these disturbances, and now, researchers from the Okinawa Institute of Science and Technology (OIST) have designed, created, and analyzed such a macroscopic device, bringing the magic of near-frictionless levitation down to Earth through precision engineering.
Controlling atomic interactions in ultracold gas ‘at the push of a button’
Changing interactions between the smallest particles at the touch of a button: Quantum researchers at RPTU have developed a new tool that makes this possible. The new approach—a temporally oscillating magnetic field—has the potential to significantly expand fundamental knowledge in the field of quantum physics. It also opens completely new perspectives on the development of new materials.
Computer chips, imaging techniques such as magnetic resonance imaging, laser printers, transistors, and navigation systems: many milestones in our modern everyday world would not have been possible without the discoveries of quantum physics. What is remarkable is that it was only about a hundred years ago that physicists discovered that the world at the smallest scales cannot be explained by the laws of classical physics.
Atoms and their components, protons, neutrons, and electrons—but also light particles—sometimes exhibit physical behaviors that are unknown in the macroscopic world. To this day, the quantum world therefore holds unclear and surprising phenomena that—once understood and controllable—could revolutionize future technologies.
California physicist and Nobel laureate John Martinis won’t quit on quantum computers
A California physicist and Nobel laureate who laid the foundation for quantum computing isn’t done working.
For the last 40 years, John Martinis has worked—mostly within California—to create the fastest computers ever built.
“It’s kind of my professional dream to do this by the time I’m really too old to retire. I should retire now, but I’m not doing that,” the now 67-year-old said.
Ultra-Thin LED Brings Natural Sunlight Indoors
Scientists have created a light as thin as paper that emits a gentle, natural glow similar to sunlight.
By using a precise mix of quantum dots, the team reproduced the full color range of daylight. The design could lead to more comfortable, eye-friendly lighting and next-generation display screens.
Paper-Thin Breakthrough in LED Technology.
Multimode quantum entanglement achieved via dissipation engineering
A research team led by Prof. Lin Yiheng from the University of Science and Technology of China (USTC), collaborating with Prof. Yuan Haidong from the Chinese University of Hong Kong, succeeded in generating multipartite quantum entangled states across two, three, and five modes using controlled dissipation as a resource. Their study is published in Science Advances.
Multimode entanglement is a key resource in quantum computation, communication, simulation, and sensing. One of the major challenges in achieving stable and scalable multimode entanglement lies in the inherent susceptibility of quantum systems to environmental noise—a phenomenon known as dissipation. To mitigate dissipative effects, conventional preparation methods often require isolating the system from its surroundings.
Recent theoretical and experimental works have revealed an innovative perspective: when properly engineered, dissipation can be transformed into a resource for generating specific quantum states—known as dissipation engineering. However, previous related experiments were confined to single-mode and two-mode quantum systems, and significant challenges remain in the experimental realization of entangled states across multimode bosonic systems.
Insane Micro AI Just Shocked The World: CRUSHED Gemini and DeepSeek (Pure Genius)
Samsung just shocked the entire AI world — a 7-million-parameter model called Tiny Recursive Model (TRM) just out-reasoned billion-parameter giants like Gemini and DeepSeek. Built by Samsung’s Montreal research lab, this microscopic AI loops over its own thoughts, rewrites its answers, and fixes mistakes before you even see them — creating reasoning depth without size. It’s 25,000 times smaller than Gemini 2.5 Pro, yet it beat it on real reasoning benchmarks like ARC-AGI.
Meanwhile, Microsoft built an AI brain for quantum chemistry, Anthropic made an AI that audits other AIs, Liquid AI proved on-device intelligence can actually work, and Meta reinvented multimodal search — all in one insane week.
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🧠 What You’ll See:
• Samsung’s 7-million-parameter TRM model that crushed Gemini and DeepSeek.
• How recursive thinking lets TRM fix its own mistakes 16 times per answer.
• Microsoft’s new neural model that changes quantum chemistry forever.
• Anthropic’s Petri framework that makes AIs audit each other.
• Liquid AI’s mobile-ready MoE model that runs locally on your phone.
• Meta’s new MetaEmbed system that rewrites multimodal search.
🚨 Why It Matters:
AI progress is no longer about size — it’s about intelligence, efficiency, and control. The smallest model just proved it can outsmart the giants.
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A new scalable approach to realize a quantum communication network based on ytterbium-171 atoms
Quantum networks, systems consisting of connected quantum computers, quantum sensors or other quantum devices, hold the potential of enabling faster and safer communications. The establishment of these networks relies on a quantum phenomenon known as entanglement, which entails a link between particles or systems, with the quantum state of one influencing the other even when they are far apart.
The atom-based qubits used to establish quantum networks so far operate at visible or ultraviolet wavelength, which is not ideal for the transmission of signals over long distances via optical fibers. Converting these signals to telecom-band wavelengths, however, can reduce the efficiency of communication and introduce undesirable signals that can disrupt the link between qubits.
A research team at University of Illinois at Urbana-Champaign, led by Prof. Jacob P. Covey recently realized telecom-band wavelength quantum networking using an array of ytterbium-171 atoms. Their paper, published in Nature Physics, introduces a promising approach to realize high-fidelity entanglement between atoms and optical photons generated directly in the telecommunication band.