An international research team will test Einstein’s twin paradox using quantum particles in a superposition state — an experiment that could lead to more accurate sensors and clocks.
The twin paradox postulates that time can pass at different speeds for people who are at different distances from a large mass or who are traveling at different velocities. “For example, relative to a reference clock far from any massive object, a clock closer to a mass or moving at high speed will tick slower,” professor Magdalena Zych (University of Queensland) said. “This creates a ‘twin paradox,’ where one of a pair of twins departs on a fast-speed journey while the other stays behind.”
When the twins reunite, the traveling twin would be much younger, as different amounts of time would have passed for each of them. Zych described this paradox as “one of the most counterintuitive predictions of relativity theory.”