B Double slit experiment wave collapse

  • Thread starter Mkwglyg
  • Start date
1
0
I would like to ask this question.
In the double slit experiment on wave particle duality of photon, we know that the wave function collapses and the photon behave like a particle whenever we peek.
Has anyone ever placed a second double slit behind the detector to see whether a particle regain its wave function ? Or the particle remains a particle ?
What i meant is this :
Single photon ... go through double slit... peek...wave collapse... we get clump on detector ... create a hole on detector... photon go through double slit again behind the detector.. this time no peek .... on the detector, do we get interference or clump ?
 

ZapperZ

Staff Emeritus
Science Advisor
Education Advisor
Insights Author
2018 Award
35,132
3,930
I would like to ask this question.
In the double slit experiment on wave particle duality of photon, we know that the wave function collapses and the photon behave like a particle whenever we peek.
Has anyone ever placed a second double slit behind the detector to see whether a particle regain its wave function ? Or the particle remains a particle ?
What i meant is this :
Single photon ... go through double slit... peek...wave collapse... we get clump on detector ... create a hole on detector... photon go through double slit again behind the detector.. this time no peek .... on the detector, do we get interference or clump ?
I think you have a bit of a misunderstanding here.

When you are able to determine which-way the quantum particle (i.e. photon, electron, neutron, buckyball, etc.) goes through, then it is the superposition of paths that has been "collapsed", or determined. Then, the pattern on your screen will be the same pattern that you get with a single-slit diffraction.

If you add another set of double-slit AFTER that, then the original experiment remains intact, i.e. the quantum particle once again will have a superposition of paths UNTIL you make a determination which one it will go through. Then what I wrote above gets repeated.

Notice that in the whole setup, you know nothing about the source. All you care about is that quantum particle with identical properties are hitting your setup. Yet, I could have easily generated electrons or photons that came out of some interferometer, and I've selected the ones with the right, single frequency to send to your setup. In other words, your whole setup would be using something that came out of some interference setup already. And this will not be highly unusual, because we do this at synchrotron facilities all over the world. It is how we select the single frequency of light coming from undulators/wigglers placed in the synchrotron rings.

Zz.
 

Want to reply to this thread?

"Double slit experiment wave collapse" You must log in or register to reply here.

Related Threads for: Double slit experiment wave collapse

Replies
6
Views
676
Replies
2
Views
760
Replies
22
Views
5K
Replies
2
Views
1K
Replies
24
Views
2K
Replies
1
Views
312
Replies
7
Views
3K

Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving

Hot Threads

Top