- #1
fizixfan
- 105
- 33
Hello,
I'm new here, but I've been researching this subject for several months now. I'm especially interested in the double-slit experiment performed with one electron at a time, particularly with the detection apparatus turned ON.
I've found this statement, or something very much like it, in numerous blogs and websites (Starts with a Bang, Empirical Zeal, Dr. Quantum, etc.):
“…we can do one more experiment: this time, we shoot electrons one-at-a-time at this wall, but at each slit, we shine a bit of light, and detect which slit the electron goes through. As each electron is fired, one (but never both) of the detectors goes off, telling you which slit the electron went through. But — and here’s the crazy part — the pattern on the screen now shows no interference, and instead we just get two separate peaks corresponding to the two “classical”, particle-like paths the electrons could have taken.” scienceblogs.com/startswithabang/2009/06/01/a-tale-of-two-slits/
Here is an illustration of the result:
So, here is my question, and it is at the very nub of my gist, and possibly even at the heart of quantum physics:
Where is the PROOF, i.e., a link to the actual experiment which shows that when we detect, or record, or measure the electrons going through the slits, we get two “bands” on the screen? I have never seen a single reference to any experiment which clearly demonstrates this. If and when I do, I will be convinced that this actually does happen, and I can die a happy man. Otherwise, it is just unsubstantiated conjecture (and I'm sure it's not). Believe me, I really DO want to be convinced. So, can anyone point me the way to the actual, physical experiment where the detectors are turned on, the interference pattern collapses and two bands, or peaks, appear on the screen? I'm 64, so I'd like to solve this final piece of the puzzle some time before I kick the bucket.
Thanks to anyone who has the answer!
Fizixfan
I'm new here, but I've been researching this subject for several months now. I'm especially interested in the double-slit experiment performed with one electron at a time, particularly with the detection apparatus turned ON.
I've found this statement, or something very much like it, in numerous blogs and websites (Starts with a Bang, Empirical Zeal, Dr. Quantum, etc.):
“…we can do one more experiment: this time, we shoot electrons one-at-a-time at this wall, but at each slit, we shine a bit of light, and detect which slit the electron goes through. As each electron is fired, one (but never both) of the detectors goes off, telling you which slit the electron went through. But — and here’s the crazy part — the pattern on the screen now shows no interference, and instead we just get two separate peaks corresponding to the two “classical”, particle-like paths the electrons could have taken.” scienceblogs.com/startswithabang/2009/06/01/a-tale-of-two-slits/
Here is an illustration of the result:
So, here is my question, and it is at the very nub of my gist, and possibly even at the heart of quantum physics:
Where is the PROOF, i.e., a link to the actual experiment which shows that when we detect, or record, or measure the electrons going through the slits, we get two “bands” on the screen? I have never seen a single reference to any experiment which clearly demonstrates this. If and when I do, I will be convinced that this actually does happen, and I can die a happy man. Otherwise, it is just unsubstantiated conjecture (and I'm sure it's not). Believe me, I really DO want to be convinced. So, can anyone point me the way to the actual, physical experiment where the detectors are turned on, the interference pattern collapses and two bands, or peaks, appear on the screen? I'm 64, so I'd like to solve this final piece of the puzzle some time before I kick the bucket.
Thanks to anyone who has the answer!
Fizixfan