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Category: quantum physics – Page 52
Is Gravity Just an Illusion Caused by Entropy? New Theory Explains How
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Over the past few decades, the idea that gravity is not a fundamental interaction but is instead caused by the increase of entropy has become increasingly popular in the world of physics. Today, we have a paper from a group of physicists who claim that entropic gravity might be the result of space being full of qubits. Let’s take a look.
Paper: https://journals.aps.org/prx/abstract… Check out my new quiz app ➜ http://quizwithit.com/ 📚 Buy my book ➜ https://amzn.to/3HSAWJW 💌 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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🤓 Check out my new quiz app ➜ http://quizwithit.com/
📚 Buy my book ➜ https://amzn.to/3HSAWJW
💌 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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#science #sciencenews #physics #gravity
Nobel Prize: Quantum Tunneling on a Large Scale
The 2025 Nobel Prize in Physics recognizes the discovery of macroscopic quantum tunneling in electrical circuits.
This story will be updated with a longer explanation of the Nobel-winning work on Thursday, 9 October.
Running up against a barrier, a classical object bounces back, but a quantum particle can come out the other side. So-called quantum tunneling explains a host of phenomena, from electron jumps in semiconductors to radioactive decays in nuclei. But tunneling is not limited to subatomic particles, as underscored by this year’s Nobel Prize in Physics. The prize recipients—John Clarke from the University of California, Berkeley; Michel Devoret from Yale University; and John Martinis from the University of California, Santa Barbara—demonstrated that large objects consisting of billions of particles can also tunnel across barriers [1– 3]. Using a superconducting circuit, the physicists showed that the superconducting electrons, acting as a collective unit, tunneled across an energy barrier between two voltage states. The work thrust open the field of superconducting circuits, which have become one of the promising platforms for future quantum computing devices.
Observing quantum weirdness in our world: Nobel physics explained
The Nobel Prize in Physics was awarded to three scientists on Tuesday for discovering that a bizarre barrier-defying phenomenon in the quantum realm could be observed on an electrical circuit in our classical world.
The discovery, which involved an effect called quantum tunneling, laid the foundations for technology now being used by Google and IBM aiming to build the quantum computers of the future.
Here is what you need to know about the Nobel-winning work by John Clarke of the UK, Frenchman Michel Devoret and American John Martinis.
Quantum Tunneling Experiments Earn Team The Nobel Prize in Physics
Briton John Clarke, Frenchman Michel Devoret and American John Martinis won the Nobel Prize in Physics on Tuesday for putting quantum mechanics into action and enabling the development of all kinds of digital technology from cellphones to a new generation of computers.
The Nobel jury noted that their work had “provided opportunities for developing the next generation of quantum technology, including quantum cryptography, quantum computers and quantum sensors”
Quantum mechanics describes how differently things work on incredibly small scales.
Physicists develop new quantum sensor at the atomic lattice scale
From computer chips to quantum dots—technological platforms were only made possible thanks to a detailed understanding of the used solid-state materials, such as silicon or more complex semiconductor materials. This understanding also includes being able to identify and control irregularities in the crystal lattice of such materials.
If, for example, an atom is missing in the lattice structure of the crystals, a single electron and thus an electric charge can become trapped there. Such charge traps generate electromagnetic noise that limits the functionality of these materials. However, it is extremely difficult to locate these charge traps on an atomic scale.
Researchers from the “Integrated Quantum Photonics” group at the Department of Physics at Humboldt-Universität zu Berlin (HU) and the “Joint Lab Diamond Nanophotonics” at the Ferdinand-Braun-Institut, led by Prof. Dr. Tim Schröder, have developed a new sensor that can detect such individual electrical charges more precisely than ever before.