Tag: quantum mechanics

Witnessing the birth of baby universes 46 times: The link between gravity and soliton

Scientists have been attempting to come up with an equation to unify the micro and macro laws of the Universe; quantum mechanics and gravity. We are one step closer with a paper that demonstrates that this unification is successfully realized in JT gravity. In the simplified toy model of the one dimensional domain, the holographic principle, or how information is stored…

Scientists ‘film’ a quantum measurement

Measuring a quantum system causes it to change—one of the strange but fundamental aspects of quantum mechanics. Researchers at Stockholm University have now been able to demonstrate how this change happens. The results are published in the scientific journal Physical Review Letters. …

Cooling of a trapped ion to the quantum regime

Neutral atoms and charged ions can be cooled down to extremely low temperatures (i.e., to microkelvins, 1 millionth of a degree above absolute zero) using laser techniques. At these low temperatures, the particles have often been found to behave in accordance with the laws of quantum mechanics. …

10,000 times faster calculations of many-body quantum dynamics possible

How an electron behaves in an atom, or how it moves in a solid, can be predicted precisely with the equations of quantum mechanics. These theoretical calculations agree fully with the results obtained from experiments. But complex quantum systems, which contain many electrons or elementary particles—such as molecules, solids or atomic nuclei—can currently not be described exactly, even with the most…

Correcting the jitters in quantum devices

Labs around the world are racing to develop new computing and sensing devices that operate on the principles of quantum mechanics and could offer dramatic advantages over their classical counterparts. But these technologies still face several challenges, and one of the most significant is how to deal with “noise”—random fluctuations that can eradicate the data stored in such devices. …

Deconstructing Schrödinger’s cat

The paradox of Schrödinger’s cat—the feline that is, famously, both alive and dead until its box is opened—is the most widely known example of a recurrent problem in quantum mechanics: its dynamics seem to predict that macroscopic objects (like cats) can, sometimes, exist simultaneously in more than one completely distinct state. Many physicists have tried to solve this paradox over the…

What’s new on Coursera for Business – January 2020

By Kyle Clark, Senior Skills Transformation Consultant 2020 is already proving to be an exciting year for skill development on Coursera. Our university and industry partners launched over 60 courses in January – an average of 2 courses per day. Our new courses range in topic from IT automation and feature engineering to visual analytics, […]
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Quantum anomalous Hall effect in intrinsic magnetic topological insulator

Nontrivial band topology can combine with magnetic order in a magnetic topological insulator to produce exotic states of matter such as quantum anomalous Hall (QAH) insulators and axion insulators. An aim of condensed matter physics is to find new materials with useful properties and apply quantum mechanics to study them. The field has allowed physicists to better understand the uses of…

Saturn’s weird, Earth-like moon just failed a key test for alien life

Life on Earth likely began with the bubble-like membranes that surround our cells. Similar membranes probably wouldn’t form on Titan, according to quantum mechanics. Source: https://www.livescience.com/titan-is-lifeless-due-to-quantum-mechanics.html