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Opinion The scientific community celebrated April 14 as World Quantum Day to raise awareness of quantum science’s impact across diverse fields The world of science is on the cusp of a transformative era driven by the burgeoning field of quantum technology. Quantum science is founded on several key principles that underpin the behaviour of particles and systems at the quantum scale. The term “quantum scale” refers to the realm of physics that deals with phenomena occurring at very small scales, typically at the level of atoms, subatomic particles and fundamental particles. It encompasses the principles of quantum mechanics, which govern...

(Phys.org)—Due to quantum effects, it's possible to build a quantum computer that computes without running—or as the scientists explain, "the result of a computation may be learned without actually running the computer." So far, however, the efficiency of this process, which is called counterfactual computation (CFC), has had an upper limit of 50%, limiting its practical applications. Now in a new paper, scientists have experimentally demonstrated a slightly different version called a "generalized CFC" that has an efficiency of 85% with the potential to reach 100%. This improvement opens the doors to realizing a much greater variety of applications, such...

The online 'computational knowledge engine' calculates answers, unlike Google, which searches for information that already exists.How long does it take to get to Saturn at, say, the speed of light? With Wolfram Alpha, the online "computational knowledge engine" that launched Monday, the answer -- 75 minutes -- can be found in a fraction of a second. Web users can submit customized questions to the service, and Wolfram Alpha will try to work out the answer on the fly. The chance that a healthy 35-year-old woman will contract heart disease in the next 10 years? One in 167. The temperature in...

U.S. scientists are predicting we will soon enjoy precision climate modeling, offering detail and scale only imagined a few years ago. John Drake and David Erickson at the Oak Ridge National Laboratory's computer science and mathematics division say it's possible for scientists to create meteorological models that take into account such things as the complete carbon cycle, terrestrial biology, El Ninos and hundreds of other factors. The goal is to provide what scientists call a fully integrated Earth system model that can be simulated every 15 minutes for centuries. "Before, we had to make compromises that ultimately limited the resolution...