Quantum entanglement is such a mainstay of modern physics that it is worth reflecting on how long it took to emerge. What began as a perceptive but vague insight by Albert Einstein languished for decades before becoming a branch of experimental physics and, increasingly, modern technology. In 1964 John Bell figured out how to convert…
Fundamental particles are the building blocks of matter, and, apparently, come in many more flavors than the basic few that make up the atoms we’re familiar with. Flavor is the name scientists give to different versions of the same type of particle. For instance, quarks (which make up the protons and neutrons inside atoms) come…
Scientists at Denmark’s Niels Bohr Institute have figured out a cool new way to lower the temperature of hot semiconductors. In a seemingly paradoxical new study, the scientists showed that light from a laser caused the temperature of semiconductor material to drop–and not by just a few degrees. The temperature fell to -269 Celsius –…
The search for the perfect alliance between science and technology has married quantum computing to the future of IT – the cloud. Researchers have used quantum mechanics to encrypt heavy-duty number-crunching computing, thereby removing a major obstacle in the adoption of the cloud for many enterprises – how safe is my data when it’s hosted…
Why does our universe look the way it does? In particular, why do we only experience three spatial dimensions in our universe, when superstring theory, for instance, claims that there are ten dimensions — nine spatial dimensions and a tenth dimension of time? Japanese scientists think they may have an explanation for how a three-dimensional universe emerged…
What existed before the big bang? What is the nature of time? Is our universe one of many? On the big questions science cannot (yet?) answer, a new crop of philosophers are trying to provide answers. Stephen Hawking may have famously declared that “Philosophy is dead.” but philosopher of physics Tim Maudlin disagrees. Maudlin, whose…
After a short spell on the rocks, a mathematically elegant view of the universe is back in vogue. Recent hints of the Higgs boson at the Large Hadron Collider help explain why we have not seen evidence for the beautiful theory of supersymmetry yet—and point to fresh ways to focus the search.
Physicists have found the strongest evidence yet of quantum effects fueling photosynthesis. Multiple experiments in recent years have suggested as much, but it’s been hard to be sure. Quantum effects were clearly present in the light-harvesting antenna proteins of plant cells, but their precise role in processing incoming photons remained unclear. But in an experiment published Dec. 6 in Proceedings of the National Academy of Sciences, a connection between coherence — far-flung molecules interacting as one, separated by space but not time — and energy flow is established.
Two diamonds as wide as earring studs have been made to share the spooky quantum state known as entanglement. The feat, performed at room temperature, blurs the divide between the classical and quantum worlds, since typically the quantum link has been made with much smaller particles at low temperatures.
In his new book, The Infinity Puzzle: Quantum Field Theory and the Hunt for an Orderly Universe, Oxford physicist Frank Close reviews decades’ worth of brain-teasing theories and looks ahead to puzzles yet to be solved.