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MIT scientists have “observed and captured images of a rare ‘edge state’ in ultracold atoms,” reports Rupendra Brahambhatt for Interesting Engineering. “Using these findings, they can learn to achieve and harness the edge states of electrons in different materials,” notes Brahambhatt. “This breakthrough in the field of quantum physics could lead to the discovery of practically infinite energy sources.”
Popular Science reporter Rahul Rao writes that researchers from MIT and Harvard have whipped up quantum tornadoes, “the latest demonstration of quantum mechanics—the strange code of laws that governs the universe at its finest, subatomic scales.”
Researchers from MIT and Harvard have directly observed a quantum tornado, reports Elizabeth Gamillo for Smithsonian. “Scientists observed the tornado-like behavior after trapping and spinning a cloud of one million sodium atoms using lasers and electromagnets at 100 rotations per second,” writes Gamillo.
A number of MIT researchers were named as top ten finalists for the Physics World 2021 Breakthrough of the Year. Prof. Wolfgang Ketterle and his colleagues were honored for their work in “independently observing Pauli blocking in ultracold gases of fermionic atoms” and astronomers with the Event Horizon Telescope Collaboration were honored for “creating the first image showing the polarization of light in the region surrounding a supermassive black hole.”
Scientists from MIT have observed a quantum effect that blocks ultracold atoms from scattering light, reports Emily Conover for Science News. To observe the effect, the researchers “beamed light through a cloud of lithium atoms, measuring the amount of light it scattered,” writes Conover. “Then, the team decreased the temperature to make the atoms fill up the lowest energy states, suppressing the scattering of light.”
A new study by MIT scientists has uncovered evidence of Pauli blocking, confirming that as atoms are chilled and squeezed to extremes their ability to scatter light is suppressed, reports Leah Crane for New Scientist. “This is a very basic phenomenon, but it’s sort of a devil to see,” explains former MIT postdoc Yair Margalit. “You need these extreme conditions to be able to see it – high densities and ultra-low temperatures – and it is difficult to get both of these at once.”
New Scientist reporter Abigail Beall spotlights how MIT researchers have listened to sound waves traveling through a "perfect" fluid, which could shed light on the resonant frequencies within a neutron star. “The quality of the resonances tells me about the fluid’s viscosity, or sound diffusivity,” says Prof. Martin Zwierlein. “If a fluid has low viscosity, it can build up a very strong sound wave and be very loud, if hit at just the right frequency. If it’s a very viscous fluid, then it doesn’t have any good resonances.”
MIT researchers have developed a new technique to improve atom interferometers, which are used to measure gravity, reports Brooks Hays for UPI. The researchers “found a way to improve the precision of atom interferometers by augmenting the condensates.”
MIT physicists have cooled molecules to just above absolute zero, reports Macrina Cooper-White for The Huffington Post. “The team hopes to cool molecules to an even lower temperature, study the interactions between them, and learn more about the limits on their lifetime,” Cooper-White explains.
Jesse Emspak of Live Science writes that MIT researchers have successfully cooled molecules to just above absolute zero. The researchers found that when the molecules were cooled to 500 nanokelvins they “were quite stable, and tended not to react with other molecules around them.”