Lifeboat Foundation

Businesses and government agencies must scan code for RSA & old protocols, replacing them with post-quantum cryptography to thwart quantum threats to encryption.

Researchers at Peking University in China have successfully observed the elusive 0₂⁺ state of ⁸ He, revealing a novel cluster structure with two strongly correlated neutron pairs. This finding provides insights into exotic nuclear structures and their potential implications for understanding neutron stars. The findings are published in Physical Review Letters.

The conventional nuclear model in physics posits a single-particle picture where nucleons, protons, and neutrons move independently within a nucleus, forming a well-defined shell structure. Governed by a mean potential created by nuclear forces, nucleons fill distinct energy levels or shells, leading to increased stability associated with magic numbers.

This model, rooted in quantum mechanics, successfully explains nuclear structure and stability but encounters limitations when addressing exotic nuclei, particularly those that are neutron-rich and unstable.

In 2015, the LIGO/Virgo experiment, a large-scale research effort based at two observatories in the United States, led to the first direct observation of gravitational waves. This important milestone has since prompted physicists worldwide to devise new theoretical descriptions for the dynamics of blackholes, building on the data collected by the LIGO/Virgo collaboration.

Researchers at Uppsala University, University of Oxford, and Université de Mons recently set out to explain the dynamics of Kerr black holes, theoretically predicted black holes that rotate at a constant rate, using theory of massive high-spin particles. Their paper, published in Physical Review Letters, specifically proposes that the dynamics of these rotating black holes is constrained by the principle of gauge symmetry, which suggests that some changes of parameters of a physical system would have no measurable effect.

“We pursued a connection between rotating Kerr black holes and massive higher-spin particles,” Henrik Johansson, co-author of the paper, told Phys.org. “In other words, we modeled the black hole as a spinning fundamental particle, similar to how the electron is treated in quantum electrodynamics.”

Charging quantum batteries in indefinite causal order. In the classical world, if you tried to charge a battery using two chargers, you would have to do so in sequence, limiting the available options to just two possible orders. However, leveraging the novel quantum effect called ICO opens the possibility to charge quantum batteries in a distinctively unconventional way. Here, multiple chargers arranged in different orders can exist simultaneously, forming a quantum superposition. ©2023 Chen et al. CC-BY-ND

Batteries that exploit quantum phenomena to gain, distribute and store power promise to surpass the abilities and usefulness of conventional chemical batteries in certain low-power applications. For the first time, researchers including those from the University of Tokyo take advantage of an unintuitive quantum process that disregards the conventional notion of causality to improve the performance of so-called quantum batteries, bringing this future technology a little closer to reality.

When you hear the word “quantum,” the physics governing the subatomic world, developments in quantum computers tend to steal the headlines, but there are other upcoming quantum technologies worth paying attention to. One such item is the quantum battery which, though initially puzzling in name, holds unexplored potential for sustainable energy solutions and possible integration into future electric vehicles. Nevertheless, these new devices are poised to find use in various portable and low-power applications, especially when opportunities to recharge are scarce.

When the theoretical physicist Leonard Susskind encountered a head-scratching paradox about black holes, he turned to an unexpected place: computer science. In nature, most self-contained systems eventually reach thermodynamic equilibrium… but not black holes. The interior volume of a black hole appears to forever expand without limit. But why? Susskind had a suspicion that a concept called computational complexity, which underpins everything from cryptography to quantum computing to the blockchain and AI, might provide an explanation.

He and his colleagues believe that the complexity of quantum entanglement continues to evolve inside a black hole long past the point of what’s called “heat death.” Now Susskind and his collaborator, Adam Brown, have used this insight to propose a new law of physics: the second law of quantum complexity, a quantum analogue of the second law of thermodynamics.

Continue reading “Can a New Law of Physics Explain a Black Hole Paradox?” »

To learn QM or quantum computing in depth, check out: https://brilliant.org/arvinash — Their course called “Quantum computing” is one of the best. You can sign up for free! And the first 200 people will get 20% off their annual membership. Enjoy!

Chapters:
0:00 — Weirdness of quantum mechanics.
1:51 — Intuitive understanding of entanglement.
4:46 — How do we know that superposition is real?
5:40 — The EPR Paradox.
6:50 — Spooky action and hidden variables.
7:51 — Bell’s Inequality.
9:07 — How are objects entangled?
10:03 — Is spooky action at a distance true?
10:40 — What is quantum entanglement really?
11:31 — How do two particles become one?
13:03 — What is non locality?
14:05 — Can we use entanglement for communication?
15:08 — Advantages of quantum entanglement.
15:49 — How to learn quantum computing.

Continue reading “Quantum Entanglement Explained — How does it really work?” »

Claim your SPECIAL OFFER for MagellanTV here: https://try.magellantv.com/historyoftheuniverse. Start your free trial TODAY so you can watch Other Earths: The Search For Habitable Planets, and the rest of MagellanTV’s science collection: https://www.magellantv.com/video/other-earths-the-search-for-habitable-planets.

If you like this video, check out Geraint Lewis´ excellent book, co-written with Chris Ferrie:
Where Did the Universe Come From? And Other Cosmic Questions: Our Universe, from the Quantum to the Cosmos.

Continue reading “Where Did Dark Matter And Dark Energy Come From?” »

Last year, I edhost a thrilling conversation between @SabineHossenfelder, Carlo Rovelli, and Eric Weinstein as they debate quantum physics, consciousness and the mystery of reality. \
\
IAI Live is a monthly event featuring debates, talks, interviews, documentaries and music. LIVE. \
Watch the original video \
\
See the world’s leading thinkers debate the big questions for real, LIVE in London. Tickets: https://howthelightgetsin.org/\
\
To discover more talks, debates, interviews and academies with the world’s leading speakers visit https://iai.tv/\
\
We imagine physics is objective. But quantum physics found the act of human observation changes the outcome of experiment. Many scientists assume this central role of the observer is limited to just quantum physics. But is this an error? As Heisenberg puts it, \.

The full, weird story of the quantum world is much too large for a single article, but the period from 1905, when Einstein first published his solution to the photoelectric puzzle, to the 1960’s, when a complete, well-tested, rigorous, and insanely complicated quantum theory of the subatomic world finally emerged, is quite the story.

This quantum theory would come to provide, in its own way, its own complete and total revision of our understanding of light. In the quantum picture of the subatomic world, what we call the electromagnetic force is really the product of countless microscopic interactions, the work of indivisible photons, who interact in mysterious ways. As in, literally mysterious. The quantum framework provides no picture as to how subatomic interactions actually proceed. Rather, it merely gives us a mathematical toolset for calculating predictions. And so while we can only answer the question of how photons actually work with a beleaguered shrug, we are at least equipped with some predictive power, which helps assuage the pain of quantum incomprehensibility.

Continue reading “Why Quantum Mechanics Defies Physics” »