Quantum physics is traditionally based on the assumption of shared reference frames for observers. However, a growing understanding of quantum mechanics suggests that reference frames themselves are subject to quantum effects, potentially revolutionizing our understanding of phenomena like superposition and entanglement.
Imagine standing on a railway platform watching a trolley go past. A girl on the trolley drops a bright red ball. To her, the ball falls straight down. But from the platform, you see the ball traverse an arc before hitting the trolley floor. The two of you observe the same event, but from different reference frames : one anchored to the trolley and the other to the platform.
“The main message is that a lot of the properties that we think are very important, and in a way absolute, are relational” or relative, said Anne-Catherine de la Hamette, a coauthor of the recent paper. Even the order of events succumbs to the rigors of quantum reference frames. For example, from one reference frame, we might observe the click of a detector happening at a certain time.
QUANTUM PHYSICS REFERENCE FRAMES SUPERPOSITION ENTANGLEMENT RELATIVITY
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