Interference Pattern in Cascaded Experiments

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In summary, the interference pattern produced is used to illuminate the next source in series, which then produces a new interference pattern. This gets cascaded say 10 times and the final interference pattern is obtained on the wall.
  • #1
nouveau_riche
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"consider the same interference experiment,the interference pattern produced is used to illuminate the next source in series,which then produces a new interference pattern,this gets cascaded say 10 times and the final interference pattern is obtained on the wall.
now ,the observer, observing the final interference pattern is not known of the fact that there's another observer measuring the particle position in the first stage of interference,and viceversa

will an interference pattern b seen by the observer ,observing it at the last stage?
and if u think the experiment is not possible then provide a reason for the same
 
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  • #2
no answers yet...
i think no one had an answer to that
 
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  • #3
nouveau_riche said:
no answers yet...
i think no one had an answer to that

still no answers,
i think there really is no certain answer
 
  • #4
I question if anyone understands what you mean by cascaded interference. Basically, there is no superposition if it is possible to determine any which path information, regardless of the particular setup.
 
  • #5
nouveau_riche said:
"consider the same interference experiment,the interference pattern produced is used to illuminate the next source in series,which then produces a new interference pattern,this gets cascaded say 10 times and the final interference pattern is obtained on the wall.
now ,the observer, observing the final interference pattern is not known of the fact that there's another observer measuring the particle position in the first stage of interference,and viceversa

will an interference pattern b seen by the observer ,observing it at the last stage?
and if u think the experiment is not possible then provide a reason for the same

the moment you measure the particle position in the first stage (or any stage or anywhere), the interference will disappear...starting with that particular photon...even if it has passed 2 or 5 or 10 slits already...(assuming we are sending photons one by one)...

thus this won't work...

or in other words

for whichever ("travelling/experimental/sample") photon(s) you do the measurement for...it's position would correspond to ...building a single blob pattern (non-interference pattern) instead of interference pattern...
 
  • #6
San K said:
the moment you measure the particle position in the first stage (or any stage or anywhere), the interference will disappear...starting with that particular photon...even if it has passed 2 or 5 or 10 slits already...(assuming we are sending photons one by one)...

thus this won't work...

or in other words

for whichever ("travelling/experimental/sample") photon(s) you do the measurement for...it's position would correspond to ...building a single blob pattern (non-interference pattern) instead of interference pattern...

but if have a photon having high uncertainity in position then there might be the probability that localising the particle at say 2nd stage would produce an interference pattern at atleast 3rd stage regardless of the fact of being showing it's particle nature
 
  • #7
nouveau_riche said:
but if have a photon having high uncertainity in position then there might be the probability that localising the particle at say 2nd stage would produce an interference pattern at atleast 3rd stage regardless of the fact of being showing it's particle nature

the "collapse of the wave function" is instantaneous, the moment you detect it, say at the 2nd stage, it "becomes" a particle...

however if it goes through slits on the 3rd stage and we don't find which-way...yes...you will get an interference pattern...

so now you have which-way in 2nd slit and interference pattern in screen at 3rd stage...

you now have which-way and interference pattern...so to speak/in a sense...however these are separate events...:)
 
  • #8
San K said:
the "collapse of the wave function" is instantaneous, the moment you detect it, say at the 2nd stage, it "becomes" a particle...

however if it goes through slits on the 3rd stage and we don't find which-way...yes...you will get an interference pattern...

so now you have which-way in 2nd slit and interference pattern in screen at 3rd stage...

you now have which-way and interference pattern...so to speak/in a sense...however these are separate events...:)

so ..if i can get the interference pattern at later stages ...the problem become cumbersome..
the observer observing the interference pattern at last stage will never be aware of the fact the particle has shown it's particle nature to any observer i.e no effect of previous interaction of observer localising it
 

1. What is an interference pattern in cascaded experiments?

An interference pattern in cascaded experiments refers to the phenomenon where the results of one experiment affect the results of subsequent experiments. This can occur when the setup or conditions of the first experiment are not completely isolated from the second experiment, leading to a distortion of the results.

2. How does interference in cascaded experiments affect the validity of the results?

Interference in cascaded experiments can significantly impact the validity of the results. It can introduce bias and confounding variables, making it difficult to accurately interpret the data. This can lead to incorrect conclusions and unreliable findings.

3. What are some common sources of interference in cascaded experiments?

Some common sources of interference in cascaded experiments include shared equipment or materials, unintentional contamination, and human error. Additionally, the proximity of the experiments and potential interactions between them can also contribute to interference.

4. How can interference in cascaded experiments be minimized or avoided?

To minimize or avoid interference in cascaded experiments, it is important to carefully plan and design the experiments to ensure they are properly isolated from each other. This can include using separate equipment, conducting the experiments in different locations, and implementing strict protocols for handling and controlling variables.

5. What are the potential implications of not addressing interference in cascaded experiments?

If interference in cascaded experiments is not properly addressed, it can lead to inaccurate results and false conclusions. This can have serious implications, particularly in scientific research where incorrect findings can have far-reaching consequences and can hinder progress in a particular field.

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