科学与环境
Scientists redetermine a key strontium frequency with 50 times better precision for quantum technologies
来源: Phys.org - latest science and technology news stories · 发布于
The Korea Research Institute of Standards and Science (KRISS) has remeasured a key transition frequency of the strontium (Sr) atom for the first time in 88 years, since 1938, using a photonic grating chip. It has established a new absolute frequency value with a measurement uncer
The Korea Research Institute of Standards and Science (KRISS) has remeasured a key transition frequency of the strontium (Sr) atom for the first time in 88 years, since 1938, using a photonic grating chip. It has established a new absolute frequency value with a measurement uncertainty reduced by more than 50 times. By providing an accurate reference value for next-generation quantum technologies, this achievement is expected to contribute to the precise control and miniaturization of quantum devices, including atomic clocks and neutral-atom quantum computers.
The work is published in the journal Metrologia.
相关报道
Scientists win 2026 Nobel Prize for controlling brain cells with light
A discovery in tiny algae led to a Nobel Prize-winning breakthrough that allows scientists to switch brain cells on and off using light. The revolutionary technique has already helped researchers activate memories and is opening new possibilities for restoring vision and treating
All Top News -- ScienceDaily ·
Scientists discover that male and female skin play by different rules
Scientists have uncovered a surprising difference in how male and female skin repairs and renews itself. By tracking individual skin stem cells in living mice for five months, researchers discovered that female cells work together in a highly coordinated way, while male cells ope
All Top News -- ScienceDaily ·
Scientists discover how deep sleep builds muscle, burns fat, and boosts the brain
Scientists have discovered a surprising two-way relationship between sleep and growth hormone, revealing how the brain carefully balances physical recovery with wakefulness. The findings could help explain why poor sleep harms metabolism and brain health, potentially opening the
All Top News -- ScienceDaily ·
Scientists predicted doomsday for November 13, 2026. Should we be worried?
In 1960, scientists predicted that runaway population growth would bring humanity to the brink of destruction on November 13, 2026, and their mathematical forecasts remained surprisingly accurate for decades. But as birth rates declined and population growth slowed, the terrifyin
All Top News -- ScienceDaily ·
Scientists discover a plastic-eating “Pac-Man” enzyme with a surprising secret
Scientists have discovered a remarkable “Pac-Man enzyme” that helps bacteria devour certain types of plastic and may offer new hope in the fight against plastic pollution. Researchers found that several biodegradable plastics completely broke down in soil within about a year, whi
All Top News -- ScienceDaily ·