New answers tagged double-slit-experiment
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Double slit experiment with electrons
The equations of motion of quantum theory don't include collapse and aren't compatible with it. To add collapse to quantum theory you have to modify the equations of motion, e.g. - spontaneous ...
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Double slit experiment with electrons
When I first heard about wave function collapse, I didn't like it. It was Re: $\psi(x) \propto \delta(x-x_0)$ for a particle at $x_0$. So I retorted: but the wave function $\phi(p)$ just expanded to ...
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Why does classical physics not predict particles in the double-slit experiment to land in just two different locations?
Do a single slit experiment and get a single blurry line. Now do another single slit experiment with the second slit moved over a bit. You will get another line. Both lines will be blurred a tiny bit ...
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Are there any examples of superposition other than double-slit (or similar) experiment, which we can actually visualize?
There are many kinds of interferometers that aren't that difficult to visualize. Some of the simplest ones are the Michelson interferometer and the Mach-Zehnder interferometer
These are basically ...
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What happens in the double slit experiment if the detector is close to the slits?
Bricmont (Quantum Sense and Nonsense, 2017, pp.22-23) explicitly says that the interference disappears if the slits and detector are too close, but the consensus appears to be the converse. I only add ...
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Does measuring a quantum object collapse the wave function even if the particle is not found in the position where it was measured?
The "collapse of the wave function" is a very unphysical concept: It was invented within the Copenhagen Interpretation by people who tried to make sense of Quantum Mechanics, and who ...
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Does measuring a quantum object collapse the wave function even if the particle is not found in the position where it was measured?
You write:
Properties of quantum objects are determined by a wave function.
Not exactly. The wavefunction represents the evolution of the system. Sometimes that evolution involves what is happening ...
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Does measuring a quantum object collapse the wave function even if the particle is not found in the position where it was measured?
We are talking about a statistical law here. The probability of finding the particle in region $[x+\Delta x]$:
$$
P(x < X < x+\Delta x)=|\psi(X)|^2\Delta x=w
$$
This means that, after performing ...
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Double slit experiment with two sources
Before discussing visible light and electrons I want to point out a particularly vivid example of obtaining interference effect with multiple sources: a phased array
A phased array antenna for ...
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Is coherent light required for interference in Young's double slit experiment?
The answer is no. Coherent light would be required for different photons to interfere with each other constructively, but as the quantum double slit experiment shows, individual photons effectively ...
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Why does classical physics not predict particles in the double-slit experiment to land in just two different locations?
Lots of great answers but I didn't see anyone really address this aspect of your question the way I would do so -
every single video I watch on the topic doesn't even bother to explain why the ...
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Double slit experiment with two sources
From a typical high school physics textbook view your question is interesting ... but using a more modern understanding ... maybe taking a quantum optics course ... a new perspective will yield the ...
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Where are the images of non-interference patterns?
Phenomena for photons
photons that are detected are absorbed and no longer reach the observation screen. Detectors can therefore not be used for the “which path” investigation.
even behind a single ...
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Where are the images of non-interference patterns?
When information is copied out of a quantum system interference is suppressed, an effect called decoherence. There is a large literature on theory and experimental testing of decoherence, for a review ...
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Where are the images of non-interference patterns?
The image you show is misleading or rather wrong, even. In the case where it is detected wether a photon goes left or right (usually done by putting a vertical polarizer in front of one slit and a ...
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