A new quantum radio device may detect axions—potential dark matter particles—marking a breakthrough in the hunt for the universe’s missing 85% mass.
Category: quantum physics – Page 4
Spintronics researchers discovered a new mechanism to generate strong spin currents that could bring us a step closer to low-power, high-performance memory and processors.
Senapati, P., Parida, P. Sci Rep 15, 13,232 (2025). https://doi.org/10.1038/s41598-025-97337-0
France Shocks the World with Apollon: A Gigantic Laser Outstrips a Million Nuclear Power Plants and Puts American Supremacy to Shame
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With applications ranging from experimental physics to quantum field exploration, these high-energy lasers are more than scientific curiosities — they’re becoming symbols of technological ambition and geopolitical strength.
A research team at HZB has developed a clever technique to read quantum spin states in diamonds using electrical signals instead of light. This breakthrough could dramatically simplify quantum sensors and computing hardware.
Diamonds that contain specific optically active defects, known as color centers, can serve as highly sensitive sensors or as qubits for quantum computers, with quantum information stored in their electron spin states. Traditionally, reading these spin states requires optical methods, which are often complex and difficult to implement. Now, researchers at HZB have developed a more streamlined approach: using photovoltage to detect the spin states of individual defects. This method could pave the way for much smaller and more compact quantum sensors.
Harnessing Defects for Spin States.
Researchers in China have achieved a major leap in quantum photonics by generating a massive 60-mode entangled cluster state directly on a chip using optical microresonators.
By leveraging a deterministic, continuous-variable approach and a multiple-laser pump technique, they overcame traditional limitations in scalability. The team confirmed high-quality entanglement using advanced detection methods, paving the way for powerful quantum technologies like chip-based computers, secure communications, and cutting-edge sensors.
Breakthrough in On-Chip Quantum Entanglement.
Renowned physicist Stephen Hawking passed away earlier this year, but his legacy to science will live on. His final theory on the origin of the universe has now been published, and it offers an interesting departure from earlier ideas about the nature of the “multiverse.”
Ideas about how the universe came to exist the way we see it today have been adapted and built on for decades. The new paper, authored by Hawking and Professor Thomas Hertog, adds to the literature with a new understanding of a theory known as eternal inflation.
After the Big Bang kickstarted the universe, it expanded exponentially for a brief fraction of a fraction of a second. When that inflationary period ended, the universe continued to expand at a much slower rate. But according to the eternal inflation model, quantum fluctuations mean that in some regions of the universe, that rapid inflation never stopped. That results in a gigantic “background” universe full of an infinite number of smaller pocket universes – including the one we live in.
Consumer electronic devices are made from materials that we have been using for more than 60 years, mainly silicon, germanium and copper. Why have semiconductor electronics become increasingly fast over this time?
I would argue that this is due to miniaturization, or the ability to stack an increasingly large number of transistors in a dense integrated circuit (microchip). Some may argue that we are starting to reach limits in that miniaturization, as thin films approach a thickness of just about 10 nanometers, or even lower.
These nearly two-dimensional (2D) materials could be used to build the next-generation electronics. However, as electronic materials like silicon are miniaturized, they become less energy efficient.
Developing humanoid robots, unravelling the complexities of AI, and the mysteries of consciousness.
Welcome to the North of Patient podcast — conversations on health[beyond]care — where we paint an inspired landscape of healthcare’s future through dialogues with creative and unconventional thinkers from around the world.
For a summary of the episode, visit the blog post on North of Patient:
https://open.substack.com/pub/northofpatient/p/episode-13-dr…Share=true.
This week’s guest is the remarkable Dr. Suzanne Gildert. She’s a physicist, artist, and AI tech executive based in Vancouver on a mission to uncover the mysteries of consciousness and innovate unconscious AI.
In this episode, we dive into the groundbreaking advancements and pressing challenges in quantum computing, examining the transformative potential of these technologies to reshape our world. Beyond the science, we also explore the philosophical dimensions of AI consciousness, questioning whether AI can ever truly replicate human experience and identity.
Learn more about Nirvanic AI:
For the problem of finding ground-state energy of a local Hamiltonian, new complexity results help to bring more clarity to the boundary of quantum advantage.