Scientists at NIST and the University of Maryland have proposed a novel approach to measuring gravity at extremely short distances using a ring of ultracold atoms. The atoms would be arranged in a superposition state, allowing precise measurement of their motion and potential gravitational effects at scales as small as 10 micrometers.
The proposed “atomic beltway” would consist of several thousand atoms arranged in a ring, with lasers used to manipulate their motion. This quantum traffic jam would allow scientists to measure gravity’s effects at unprecedented scales, potentially providing insights into cosmic mysteries like dark energy and the universe’s accelerating expansion.
The research could have practical applications as well, potentially leading to highly precise motion sensors and quantum computing components. The theoretical paper, published in Physical Review Letters, suggests that this approach could help resolve some of the fundamental questions about gravity and the nature of the universe.
Source: https://www.nist.gov/news-events/news/2016/11/atomic-beltway-could-solve-problems-cosmic-gravity
Keywords: Interferometry, Gravity, Superposition
