Doubleslit experiment Bullets Doubleslit experiment Sound Waves Doubleslit
楊氏雙狹縫實驗 (Double-slit experiment) 子彈 (Bullets)
楊氏雙狹縫實驗 (Double-slit experiment) 聲波(Sound Waves)
楊氏雙狹縫實驗 (Double-slit experiment) 電子(Electrons)
楊氏雙狹縫實驗 (Double-slit experiment) 觀測電子(Observing Electrons)
Pauli Dirac: The photon (electron) interferes with itself No more than one photon can pass the slit each time. Attenuation film
Superposition is not a mixture of two pathways The photon passes two slits simultaneously. Or if which-way is known, no interference!
Decoherence I: Which-pathway pre-selected 50% probability each slit, never simultaneously passed. Attenuation Which-way information is known each time, no interference pattern! film
Decoherence II: Which-pathway recorded The two-level system is excited if the photon goes the upper path. film Attenuation No interference pattern, even if you don’t know but only have the possibility to know which-pathway.
Decoherence III: Random phase shift film Attenuation No interference pattern, if the whichpathway information is recorded by an environment.
An example in Classical Physics Random Phase
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