For the first time, physicists from Finland and the United States have observed a special kind of magnetic monopole called an “Alice Ring.”
A team of researchers from the United States and Finland have observed enigmatic “Alice Rings” in super cold gas for the first time. A strange kind of circular magnetic monopoles, “Alice Rings” are a kind of quantum phenomenon that has, until now, only existed in theory. Various forces and particles can arise from the quantum machinery, theoretically including monopoles.
A new symmetry-based classification could help researchers describe open, many-body quantum systems that display quantum chaos.
The quest for understanding quantum systems of many particles—and the exotic phenomena they display—fascinates theorists and experimentalists alike, but it’s one with many hurdles. The number of the system’s quantum states increases exponentially with size; these states are hard to prepare, probe, and characterize in experiments, and interactions with the environment “open” the system, further increasing the number of states to consider. As a result, open, many-body quantum systems remain a frontier of exploration in physics, for which researchers haven’t developed a systematic theoretical framework. A new study by Kohei Kawabata of Princeton University and colleagues has taken an important step toward developing such a general framework by offering a complete classification of these systems based on symmetry principles [1] (Fig. 1).
Physicists have developed a technique to precisely align supermoiré lattices, revolutionizing the potential for next-generation moiré quantum matter.
National University of Singapore (NUS) physicists have developed a technique to precisely control the alignment of supermoiré lattices by using a set of golden rules, paving the way for the advancement of next-generation moiré quantum matter.
We developed a technique to fabricate atomically precise quantum antidots with unprecedented robustness and tunable quantum hole states through self-assembled single vacancies in a two-dimensional transition metal dichalcogenide.
The mysterious phenomenon that Einstein once described as “spooky action at a distance” was seen as a wavefunction between two entangled photons.
Quantum physics, the realm of science that describes the Universe at the smallest scales, is known for its counter-intuitive phenomena that seem to defy every law of physics on an everyday scale.
Arguably none of the aspects of quantum physics are as surprising or as troubling as entanglement, the idea that two particles can be connected in such a way that a change to one is instantly reflected in the other, even if the two particles are at opposite sides of the Universe. It’s the word “instantly” that troubled Albert Einstein enough to describe entanglement as “spooky action at a distance”.
A team from the University of Chicago has announced the first evidence for “quantum superchemistry” – a phenomenon where particles in the same quantum state undergo collective accelerated reactions. The effect had been predicted, but never observed in the laboratory.
The findings, published July 24 in Nature Physics, open the door to a new field. Scientists are intensely interested in what are known as “quantum-enhanced” chemical reactions, which could have applications in quantum chemistry, quantum computing, and other technologies, as well as in better understanding the laws of the universe.
Breakthrough could point way to fundamental insights, new technology.
In a paper recently published in Nature Photonics.
<em>Nature Photonics</em> is a prestigious, peer-reviewed scientific journal that is published by the Nature Publishing Group. Launched in January 2007, the journal focuses on the field of photonics, which includes research into the science and technology of light generation, manipulation, and detection. Its content ranges from fundamental research to applied science, covering topics such as lasers, optical devices, photonics materials, and photonics for energy. In addition to research papers, <em>Nature Photonics</em> also publishes reviews, news, and commentary on significant developments in the photonics field. It is a highly respected publication and is widely read by researchers, academics, and professionals in the photonics and related fields.
A new study discusses how high-fidelity quantum information could be sent through fiber optic networks by a novel atomic device.
Did you know quantum transmissions can’t be amplified over a city or an ocean like conventional data signals? Instead, they have to be periodically repeated using specialized devices called quantum repeaters.
For the technology to be used in future communications networks, researchers have developed a novel method of connecting quantum devices over great distances.
Michael Levin discusses his 2022 paper “Technological Approach to Mind Everywhere: An Experimentally-Grounded Framework for Understanding Diverse Bodies and Minds” and his 2023 paper with Joshua Bongard, “There’s Plenty of Room Right Here: Biological Systems as Evolved, Overloaded, Multi-scale Machines.” Links to papers flagged 🚩below.
Michael Levin is a scientist at Tufts University; his lab studies anatomical and behavioral decision-making at multiple scales of biological, artificial, and hybrid systems. He works at the intersection of developmental biology, artificial life, bioengineering, synthetic morphology, and cognitive science.
❶ Polycomputing (observer-dependent) 1:59 Outlining the discussion. 3:50 My favorite comment from round 1 interview. 5:00 What is polycomputing? 8:50 An ode to Richard Feynman’s “There’s plenty of room at the bottom“ 11:10 How/when was this discovered? Reductionism, causal power… 14:40 “It’s a view that steps away from prediction.“ 16:20 From abstract: Polycomputing is the ability of the same substrate to simultaneously compute different things *but emphasis on the observer(s)* 17:05 What’s an example of polycomputing? 19:40 They took a different approach and actually did experiments with gene regulatory networks (GRNs) 23:18 Different observers extract different utility from the exact same system. 26:35 Spatial causal emergence graphs (determinism, degeneracy) | Erik Hoel’s micro/macro & effective information. 29:25 Inventiveness of John Conway’s Game of Life.
❷ Technological Approach to Mind Everywhere. 34:20 Tell me 3 things to determine intelligence (ball vs mouse on a hill) 39:50 Jeff Hawkins’ Thousand Brains Theory. 41:05 Agency is not binary, continuum of persuadability. 44:50 Where’s the bottom of agency? Plants & insects far off from 0 46:55 What is the absolute minimum amount of agency? Some degree of goal directed behavior & indeterminacy… 51:05 Life is a system good at scaling. 51:41 “To me, our world doesn’t have 0 agency anywhere.“ 53:50 As an engineer, what can I take advantage of? 55:00 Surely you don’t think the weather has any intelligence to it…
❸ Attractor Landscapes. 58:35 Homeostatic loops, morphological spaces, attractor landscapes. 1:00:35 “Of course we’re living in a simulation!“ 1:06:45 Attractor landscapes, topography, anatomical morphous space (D’Arcy Thompson) 1:12:28 Planaria stochastic, probability of head shape proportional to evolutionary distance between species. 1:15:15 What is the secret of the universe? Attractor landscapes, quantum fields, black holes. 1:19:05 We need a new system of ethics for unconventional minds.
