Phys.org June 14, 2024
Optical quantum interferometers are of particular interest because of mature methods for generating and manipulating quantum states of light. Their increased sensitivity promises to enable tests of quantum phenomena. However, this requires long and decoherence-free processing of quantum entanglement, which, for large interferometric areas, remains unexplored territory. Researchers in Austria developed a table-top experiment using maximally path-entangled quantum states of light in a large-scale interferometer sensitive enough to measure the rotation rate of Earth with high sensitivity. According to the researchers further improvements to their methodology will enable tests for fundamental physics allowing the exploration of the interplay between quantum mechanics and general relativity, and other tests… read more. Open Access TECHNICAL ARTICLE
Earth’s rotation measured using entangled photons.
Credit: SCIENCE ADVANCES, 14 Jun 2024, Vol 10, Issue 24