If you holler at someone across your yard, the sound travels on the bustling movement of air molecules. But over long distances your voice needs help to reach its destination-help provided by a telephone or the Internet. Atoms don’t yell, but they can share information through light. And they also need help connecting over long distances.
MIT physicists have developed a faster way to make Bose-Einstein condensates, to speed up investigations into magnetism and superconductivity.
By all measures, graphene shouldn’t exist. The fact it does comes down to a neat loophole in physics that sees an impossible 2D sheet of atoms act like a solid 3D material.
It’s not easy to bounce a single particle of light off a single atom that is less than a billionth of a metre wide. However, researchers at the Centre for Quantum Technologies at the National University of Singapore have shown they can double the odds of success, an innovation that might be useful in quantum computing and metrology. The findings were published 31 October in Nature Communications.
Swiss researchers have successfully entangled 16 million atoms with a single photon, but macroscopic results are a long way off. Michael Lucy reports.
Scientists at the University of California Los Angeles have found a way to create stunningly detailed 3D reconstructions of platinum nanoparticles.
The “hollow atoms”, which are being produced in the labs of TU Wien (Vienna) are quite exotic objects. Their electrons are in a state of extremely high energy (so called Rydberg states), but when they are shot through another material, they can get rid of this energy in a matter of femtoseconds (millionths of a billionth of a second).
A study by MIT researchers shows that collections of ultracold molecules can retain the information stored in them for hundreds of times longer than previously achieved in these materials. These clusters might thus serve as “qubits,” the basic building blocks of quantum computers.
Storing Spotify in your pocket.
(Phys.org)-Scientists have fabricated a superlattice of single-atom magnets on graphene with a density of 115 terabits per square inch, suggesting that the configuration could lead to next-generation storage media.
The paradox of Schrödinger’s cat-in which a quantum cat is both alive and dead at the same time until we check to see which state it’s in-is arguably the most famous example of the bizarre counter-intuitive nature of the quantum world. Now, Stanford physicists have exploited this feature weirdness to make highly detailed movies of the inner machinery of simple iodine molecules.
An atomic level version of Galileo’s Tower of Pisa experiment will force a rethink of some theories of quantum mechanics. Cathal O’Connell reports.
We are getting so close.
Dark energy causes the Universe to expand but nobody knows what it is. So how do you find out? Belinda Smith reports.
Can a penalty kick simultaneously score a goal and miss? For very small objects, at least, this is possible: according to the predictions of quantum mechanics, microscopic objects can take different paths at the same time. The world of macroscopic objects follows other rules: the football always moves in a definite direction. But is this always correct? Physicists of the University of Bonn have constructed an experiment designed to possibly falsify this thesis. Their first experiment shows that Caesium atoms can indeed take two paths at the same time.
Physicists debate whether quantum states are as real as atoms or are just tools for forecasting phenomena.