Double slit experiment - quick question

In summary, the conversation discusses the potential of conducting a double slit experiment with a barrier between the two slits and its potential results. It is suggested that such an experiment could determine if the particle is interfering with itself or going through both slits simultaneously. However, introducing a barrier would change the experiment entirely and may not produce an interference pattern. The concept of a "quantum eraser" is also mentioned as a potential way to explore the consequences of a modified double-slit experiment.
  • #1
netjim66
7
0
Has anyone heard of anyone trying to conduct the double slit experiment with a barrier between the two slits that goes all the way or near the detector?
If it could be done maybe it would be interesting to see the result.
It may answer the question if the photon (or electron) is interferring with itself (or is it going through both slits at the same time).

The barrier may prevent interferrence. If you still see the interferrence pattern, then maybe you could derive that the particle is going through both slit.
 
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  • #2
I don't think you'd see an interference pattern in that case. The barrier between the slits would prevent the interference occurring.
 
  • #3
Introducing a barrier changes the experiment entirely. The whole point of interference experiments is that the waves propogate in *free space*. You no longer have free space.
 
  • #4
Hey Net, if you are really interested in bizarre consequences of a modified double-slit experiment, search Google for info on "quantum eraser"
 

1. What is the double slit experiment?

The double slit experiment is a fundamental experiment in quantum physics that demonstrates the wave-particle duality of light and matter. It involves shining a beam of particles or light through two parallel slits and observing the resulting interference pattern on a screen.

2. Who first performed the double slit experiment?

The double slit experiment was first performed by English physicist Thomas Young in 1801, although it was later refined by other scientists such as Augustin-Jean Fresnel and Thomas Young's contemporary, Francois Arago.

3. What is the significance of the double slit experiment?

The double slit experiment is significant because it provides evidence for the wave-particle duality of light and matter. It also raises questions about the nature of reality and the role of observation in quantum mechanics.

4. Can the double slit experiment be performed with other particles besides light?

Yes, the double slit experiment has been performed with a variety of particles, including electrons, protons, and even large molecules like buckyballs. The results have consistently shown interference patterns, supporting the wave-like nature of these particles.

5. How does the double slit experiment relate to the uncertainty principle?

The double slit experiment is often used to demonstrate the uncertainty principle, which states that it is impossible to know both the exact position and momentum of a particle at the same time. The experiment shows that the act of observing a particle affects its behavior, making it impossible to predict its path with certainty.

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