In other words, he showed that an entanglement-free quantum circuit was easy to simulate on a classical computer. In a computational sense, the circuit wasn’t intrinsically quantum. The collection of all such non-entangling circuits (or, equivalently, all arrangements of qubits that might come out of these non-entangling circuits) formed something of a classically simulable island… Continue reading The Quest to Quantify Quantumness
Tag: Quantum Stuff
Climate Change Is Making Saltwater Intrusion Worse in Coastal Areas
The following essay is reprinted with permission from The Conversation, an online publication covering the latest research. Seawater intrusion is the movement of saline water from the ocean or estuaries into freshwater systems. The seawater that has crept up the Mississippi River in the summer and early fall of 2023 is a reminder that coastal communities teeter… Continue reading Climate Change Is Making Saltwater Intrusion Worse in Coastal Areas
Scientists Argue Conservation Is under Threat in Indonesia
Christopher Intagliata: For Science, Quickly, I’m Christopher Intagliata. Indonesia’s more than 17,000 islands contain the largest expanse of tropical rain forest in Southeast Asia. And they’re teeming with biodiversity. [CLIP: Sound of hiking through the jungle] Erik Meijaard: These forests are just incredibly rich. Intagliata: Conservation scientist Erik Meijaard has worked for more than three… Continue reading Scientists Argue Conservation Is under Threat in Indonesia
NASA’s Psyche Mission Launches to Mysterious Metallic Asteroid
Deep in the asteroid belt, between Mars and Jupiter, lies a strange, metal-rich asteroid unlike anything anyone has ever seen before. Dubbed Psyche, the unique object may offer investigators a truly alien landscape to explore—one that could yield new insights about the origin of our solar system and perhaps even about Earth’s most remote region:… Continue reading NASA’s Psyche Mission Launches to Mysterious Metallic Asteroid
Climate Misinformation Persists in New Middle School Textbooks
Scientists have found no evidence that natural forces have contributed to our planet’s current global warming problem, but a middle school student reading a crisp new book from the nation’s top science textbook publisher might think otherwise. “Due to both human and natural activities,” the child would read, “the amount of carbon dioxide in the… Continue reading Climate Misinformation Persists in New Middle School Textbooks
Fossilized Molecules Reveal a Lost World of Ancient Life
At first, the stem group may have had an advantage. Oxygen levels in the atmosphere were significantly lower than they are today. Because building protosterols requires less oxygen and energy than modern sterols require, stem-group eukaryotes were likely more successful and abundant. Their influence declined when the world hit a critical transition known as the… Continue reading Fossilized Molecules Reveal a Lost World of Ancient Life
Tiny Language Models Thrive With GPT-4 as a Teacher
Learning English is no easy task, as countless students well know. But when the student is a computer, one approach works surprisingly well: Simply feed mountains of text from the internet to a giant mathematical model called a neural network. That’s the operating principle behind generative language models like OpenAI’s ChatGPT, whose ability to converse… Continue reading Tiny Language Models Thrive With GPT-4 as a Teacher
Dangerous ‘Superbugs’ Are on the Rise. What Can Stop Them?
The bacteria may have entered her flesh along with shrapnel from the bomb detonated in Brussels Airport in 2016. Or perhaps the microbes hitched a ride on the surgical instruments used to treat her wounds. Either way, the “superbug” refused to be vanquished, despite years of antibiotic treatment. The woman had survived a terrorist attack… Continue reading Dangerous ‘Superbugs’ Are on the Rise. What Can Stop Them?
FEMA Offers Every State $2 Million to Adopt Safer Building Codes
CLIMATEWIRE | Two houses are side by side. One is a crumpled mess of splintered wood and ripped insulation. The other stands perfectly intact. This image is one that increasingly pops up on news sites and social media after hurricanes, floods and climate-fueled disasters. An accompanying caption often emphasizes that the intact home was built with… Continue reading FEMA Offers Every State $2 Million to Adopt Safer Building Codes
This Is The Largest Map of The Human Brain Ever Made
Researchers have created the largest atlas of human brain cells so far, revealing more than 3,000 cell types — many of which are new to science. The work, published in a package of 21 papers today in Science, Science Advances and Science Translational Medicine, will aid the study of diseases, cognition and what makes us human, among other things, say the… Continue reading This Is The Largest Map of The Human Brain Ever Made