Tweezers made of sunshine might illuminate the quantum twin paradox

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Tweezers comprised of laser beams can maintain and transfer a single atom

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The best way gravity impacts the quantum realm has thus far remained mysterious. However an experiment that makes use of lasers as a pair of tweezers might let researchers assess how Earth’s gravitational pull impacts an atom that ticks like a clock.

At extraordinarily chilly temperatures – suppose billionths of a level above absolute zero – quantum results make atoms behave like “matter waves” slightly than particles. Physicists have lengthy taken benefit of this: by colliding completely different matter waves and measuring the ensuing ripples, they will determine the forces…

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