delayed choice quantum eraser

The delayed choice quantum eraser is a thought experiment in quantum physics that explores the behavior of particles/waves and their dual nature. It involves observing a particle's behavior, which seems to collapse it into a definite state, even though it had several potential outcomes. However, if measurements are delayed or erased, the particle's wave-like behavior can be restored, suggesting that the observed state is dependent on the observer's choice of measurement, even after the particle was emitted.

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