Successive waves of breakout technologies are transforming systems and society. Is quantum computing next?
Category: quantum physics – Page 115
Online Seminar: How to Build a Quantum Supercomputer — Scaling Challenges and Opportunities
Quantum computing represents a paradigm shift in computation with the potential to revolutionize scientific discovery and technological innovation. This seminar will examine the roadmap for constructing quantum supercomputers, emphasizing the integration of quantum processors with traditional high-performance computing (HPC) systems. The seminar will be led by prominent experts Prof. John Martinis (Qolab), Dr. Masoud Mohseni (HPE), and Dr. Yonatan Cohen (Quantum Machines), who will discuss the critical hurdles and opportunities in scaling quantum computing, drawing upon their latest research publication, “How to Build a Quantum Supercomputer: Scaling Challenges and Opportunities”
The Secret Intelligence of Ink: Physicists Solve a Fluid Mechanics Mystery
What began as a demonstration of the complexity of fluid systems evolved into an art piece in the American Physical Society’s Gallery of Fluid Motion and ultimately became a puzzle that researchers have now solved.
Their new study is published in the journal Physical Review Letters
<em> Physical Review Letters (PRL)</em> is a prestigious peer-reviewed scientific journal published by the American Physical Society. Launched in 1958, it is renowned for its swift publication of short reports on significant fundamental research in all fields of physics. PRL serves as a venue for researchers to quickly share groundbreaking and innovative findings that can potentially shift or enhance understanding in areas such as particle physics, quantum mechanics, relativity, and condensed matter physics. The journal is highly regarded in the scientific community for its rigorous peer review process and its focus on high-impact papers that often provide foundational insights within the field of physics.
The Wave-function of the Universe Might Finally Be Calculable
Take my introduction to quantum mechanics course on Brilliant! First 30 days are free and 20% off the annual premium subscription when you use our link ➜ https://brilliant.org/sabine.
Physicists think that our universe started out as just a lot of quantum fluctuations. That means, if you’re able to calculate wave-function of those quantum fluctuations, you can learn how the universe ended up the way it is now. In a pre-print, a group of physicists around Nima Arkani-Hamed say they’ve worked out a new powerful method to calculate the wave function of the early universe, and they’re calling it the “cosmohedra.” Let’s take a look.
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💌 Support me on Donorbox ➜ https://donorbox.org/swtg.
📝 Transcripts and written news on Substack ➜ https://sciencewtg.substack.com/
👉 Transcript with links to references on Patreon ➜ / sabine.
📩 Free weekly science newsletter ➜ https://sabinehossenfelder.com/newsle…
👂 Audio only podcast ➜ https://open.spotify.com/show/0MkNfXl…
🔗 Join this channel to get access to perks ➜
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🖼️ On instagram ➜ / sciencewtg.
#science #sciencenews #physics #universe
Unlocking graphite’s potential: Sliding layers for advanced material properties
Can copper be turned into gold? For centuries, alchemists pursued this dream, unaware that such a transformation requires a nuclear reaction. In contrast, graphite—the material found in pencil tips—and diamond are both composed entirely of carbon atoms; the key difference lies in how these atoms are arranged. Converting graphite into diamond requires extreme temperatures and pressures to break and reform chemical bonds, making the process impractical.
A more feasible transformation, according to Prof. Moshe Ben Shalom, head of the Quantum Layered Matter Group at Tel Aviv University, involves reconfiguring the atomic layers of graphite by shifting them against relatively weak van der Waals forces. This study, led by Prof. Ben Shalom and Ph.D. students Maayan Vizner Stern and Simon Salleh Atri, all from the Raymond & Beverly Sackler School of Physics & Astronomy at Tel Aviv University, was recently published in the journal Nature Review Physics.
While this method won’t create diamonds, if the switching process is fast and efficient enough, it could serve as a tiny electronic memory unit. In this case, the value of these newly engineered “polytype” materials could surpass that of both diamonds and gold.
Promising new class of high-temperature superconductors achieves stability at room pressure
Researchers have made a significant step in the study of a new class of high-temperature superconductors: creating superconductors that work at room pressure. That advance lays the groundwork for deeper exploration of these materials, bringing us closer to real-world applications such as lossless power grids and advanced quantum technologies.
Superconductivity, the ability of certain materials to conduct electricity with zero resistance, typically occurs at extremely low temperatures, or in some cases, under high pressures. For decades, researchers have focused on a class of materials called cuprates, known for their ability to achieve superconductivity at relatively high temperatures.
About five years ago, a team of researchers at the Department of Energy’s SLAC National Accelerator Laboratory and Stanford University discovered superconductivity in nickelates, materials chemically similar to cuprates—and last summer, another group of researchers reported superconductivity in a new class of nickel oxides at temperatures comparable to cuprates.
Quantum algorithm distributed across multiple processors for the first time—paving the way to quantum supercomputers
In a milestone that brings quantum computing tangibly closer to large-scale practical use, scientists at Oxford University Physics have demonstrated the first instance of distributed quantum computing.
Using a photonic network interface, they successfully linked two separate quantum processors to form a single, fully connected quantum computer, paving the way to tackling computational challenges previously out of reach. The results were published on 5 Feb in Nature.
The breakthrough addresses quantum’s ‘scalability problem’: a quantum computer powerful enough to be industry-disrupting would have to be capable of processing millions of qubits. Packing all these processors in a single device, however, would require a machine of an immense size.
