The double-slit-experiment tag has no wiki summary.
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Is it possible to reproduce Double-slit experiment by myself at home?
I want to reproduce this experiment by myself. What I need for this. What parameters of slits and laser/another light source it needs? Is it possible to make DIY-detector?
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6answers
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Tried to do the double slit experiment, failed. Why?
I tried, and failed, to do the double-slit experiment. I thought I had a good experiment setup, but obviously I was wrong. Can anyone offer some insight in what I might have done wrong? Most of ...
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1answer
53 views
double slit experiment with two opposite quarter waveplates
Consider the usual double slit experiment involving laser and a double slit and a screen. Now place in front of the left slit a quarter waveplate (let's call it QWP1) that changes a certain linear ...
2
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1answer
39 views
State emitting from an extended thermal source
This calculation is for a double slit experiment setup which is experiencing a far field radiation from an extended monochromatic thermal source. I assume the source is 1-D and it's length is $b$. ...
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1answer
52 views
First order coherence through double slit
The state $$|\Psi \rangle = |0\rangle + \sum_j \int d\omega f_j(\omega)\hat{a}^\dagger_j (\omega) |0\rangle $$ is coming from a far field and incident on a double slit setup. Here j is the index of ...
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1answer
70 views
Why incoherent source of waves have to be passed though a single slit for double slit interference pattern to occur?
Thomas Young used a single slit between the light source and the double slits. I can't understand why did he used the single slit, since the light from only one source is coherent already or isn't it? ...
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0answers
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Double Slit Problem Involving Superposition of Wave Equation [closed]
Here's my question:
To be clear it's part (iv) that's unclear to me.
I can see that the important bit is that the exposure is over a LONG time. Hence, this must have some implication on the manner ...
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4answers
252 views
Interference and which-path information
My understanding is that in a double-slit experiment, quantum interference disappears if which-path information is available. How is available defined? Consider the following experiment:
SPDC is used ...
4
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1answer
109 views
Young's double slit experiment viva question
My professor asked me (in my viva exam), "If, in the Fraunhofer single slit diffraction experiment, if we have 2 slits instead of one (at very short distances), What would happen?"
I answered with ...
4
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2answers
123 views
How can a single slit diffraction produce an interference pattern?
How can a light passed though a single slit produce a similar interference pattern to the double-slit experiment? How does the diffracted wave produce the points of cancellation and reinforcement, if ...
3
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1answer
90 views
Use and understanding of higher-order correlation functions
The correlation function g1 is pretty easy to understand and the relation to young's double slit experiment is also clear to me.
In every quantum optics book I read so far correlation functions ...
2
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1answer
60 views
Does the observer or the camera collapse the wave function in the double slit experiment?
Ok so if we setup a camera before the slit we will find a single photon and will follow through accordingly, likewise by having a camera setup after the slit, we can retroactivly collapse the wave ...
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1answer
86 views
Probabilistic vs Statistical interpretation of Double Slit experiment
Why is it assumed that the results seen in the double slit experiment are probabilistic and not just a statistical result of some unknown variable or set of variables within the system.
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2answers
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Double slit experiments - basic pondering
I have some ponderings about the double slit experiment(s) and mainly their interpretations. Some of my questions may exhibit insufficient scholarship so please bear along, or please point out the ...
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4answers
652 views
Why does observation collapse the wave function?
In one of the first lectures on QM we are always taught about Young's experiment and how particles behave either as waves or as particles depending on whether or not they are being observed. I want to ...
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1answer
107 views
Young experiment: square of classical real wave function
I can't understand why the sum of two real waves result in a time dependent wave, but not so for the complex waves.
In details, I can't get this passage on p.38-39 in A.C. Phillips, Introduction to ...
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2answers
235 views
Young's Double Slit experiment question
Q-A beam of light consisting of two wavelenghts 600 nm and 450 nm is used to obtain interference in Young's Double Slit experiment (YDSE). Find the least distance from the central maximum where the ...
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5answers
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Hidden observers in Double Slit experiments - Do they matter?
I'm still struggling a bit with some ideas around double slit experiments. One that keeps cropping up for me is the role of observers.
Imagine a classic double slit experiment with a hidden observer ...
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1answer
147 views
Quantum Mechanics proved incorrect. Bohr - Einstein debates concluded?
"Photons act like they go through two paths, even when we know which they took".
Please refer the above link and its conclusion.
I am an Engineer. What I infer from this is :-
This proves ERP.
...
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0answers
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How to make DIY flight detector for double slit experiment?
I want to reproduce double slit experiment. So, is it possible to build flight detector (situated near one slit) at home? Is it possible to buy it somewhere?
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1answer
105 views
Is the following a simpler viable alternative to Feynman's interpretation of the double slit experiment
Feynman suggested that there is an infinity of trajectories for a single electron travelling from the source to the phosphorescent screen. He said that one electron goes through both holes (Fig 4.10, ...
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4answers
157 views
wave-particle duality
I have been trying to understand "wave-particle duality" and other cases related to it. I am currently a college level student. I have few question which I am not getting answers clearly.
In double ...
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6answers
351 views
Do we really know which slit the photon passed through in Afshar's experiment?
The plain old double slit experiment displays interference when we don't measure which slit the photon passed through, and no interference when it is measured. Let's turn our attention to the case ...
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5answers
674 views
Connection between quantum physics and consciousness
Can someone explain the quantum physics-consciousness connection? In the double slit or quantum eraser experiments, the system behaves as a whole, with some apparent time independent traits. Invoking ...
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3answers
787 views
The Double Slit Experiment and the changing of electron behaviour
As you will all know, when one tries to detect which slit an electron has gone through with close up observation, it changes from behaving like a wave and producing an interference pattern to behaving ...
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1answer
145 views
The Double Slit Experiment - delayed measurement
I'm not a physicist; I'm just curious about what would happen.
According to this video "Explained ! The Double Slit Experiment" (at 2:50):
"Somebody decided to leave the detectors on but just not ...
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2answers
139 views
In a double slit experiment are any particles lost because they hit the space between the two slits?
In its wave-form a particle should pass through every time because it propagates in all directions. So there shouldn't be any losses of particles landing in between the slits, right?
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3answers
238 views
Double slit experiment and indirect measurements
In the classic Young double slit experiment, with slits labeled as "A" and "B" and the detector screen "C", we put a detector with 100% accuracy (no particle can pass through the slit without the ...
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3answers
258 views
What is the experiment where subatomic particles appear to foresee the future?
I've seen a documentary, whose name I don't remember but I'm curious because it suggests that subatomic particles are able to "foresee the future".
I'll try to describe it here:
Some particles are ...
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2answers
207 views
Double slit experiment alternating holes
If we perform the double slit experiment by shoting photons covering one hole at a time, would we see equally the double slit interference?.
That is, the same set up of double slit but fire photons ...
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1answer
126 views
How is wavefunction probability redistributed after partial wavefunction collapse?
Suppose I set up the double-slit experiment using photons as my particle. Behind the left slit I place a beam splitter that points some of the light off in the direction of a camera (represented as ...
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2answers
395 views
Solving the Schrödinger equation for the double-slit experiment
I'm not sure if this is the right place to ask a question about the Schrödinger equation, but I'll take my chances anyway. Basically, I would like to know how one can set up a potential function that ...
1
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1answer
77 views
Where can you get a photon detector?
Say I'm doing the double-slit experiment with photons as the particle and want to add a detector just behind each slit to eliminate the interference pattern. Where would I get a detector like that?
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4answers
835 views
Can an electron be in two places at the same time?
So I've been reading a bit and watching some videos about the double slit experiment, and therefore the wave particle duality; I've also read this "implies" that a particle can be in two places at the ...
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4answers
610 views
Young's double-slit experiment with detectors
Related: Accuracy of various optical instruments
In many books, it's written that knowing which slit a photon passes through (by placing a detector before the slit) in a Young's double-slit setup ...
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2answers
118 views
Probability wave speed of dispersion and interference
I'm a layperson learning about quantum mechanics and probability waves. My understanding is that the probability wave for the position of a particle disperses throughout all of the universe.
I have ...
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3answers
301 views
Triple slit experiment
If the experiment is done with single photons and a "detector" at one of the slits the interference pattern breaks down.
What happens if three slits are used with single photons and a "detector" at, ...
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3answers
285 views
Is it the act of measuring a quantum particle that causes it to lose its uncertainty?
I have designed an experiment. Without going into detail it resolves around the double slit quantum eraser experiments. If we can infer the location of a particle without actually measuring it, does ...
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0answers
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An idea about the simultaneous observation of wave and particle property of light [closed]
It is well known that in a double-slit experiment with single photon source, one can not obtain the which-way info and interference pattern at the same time, since a detector placed behind one slit ...
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1answer
130 views
On the double slit experiment with 4 slits
I'm not a physicist nor a science savvy person, but I was wondering if this experiment was ever performed in a simultaneous fashion on screens with fixed references(marks) and firing different ...
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2answers
375 views
One-photon-at-a-time effect on double slit experiment with detectors?
I do not have a access to a physics lab, nor have I come across this type of a double slit experiment, hence I am curious if someone has tried this.
Given a double slit experiment setup with a ...
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4answers
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slit-screen and wave-particle duality
In a double-slit experiment, interference patterns are shown when lights pass through slits and illuminate the screen. So, the question is if one shoots a single photon, does the screen show ...
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3answers
401 views
Quantum Mechanics
Quantum Mechanics.
Could anyone help me to understand the concept involved?
Double slit experiment can be easily understood by Wave nature of light, but while explaining it with photons, it required ...
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3answers
398 views
Single photon and double-slit experiment
Laser fires single particles of light, called photons, through the slits. Even though only single photons of light are being fired through the slits and They create three pattern again. How single ...
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1answer
95 views
Matter wave of multiple particles of different types
I am slightly getting confused on the following issue:
When performing double-slit experiment of electrons, a screen allows the matter waves to be detected as particles. And as we all know that ...
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3answers
160 views
How to observe a particle with indefinite position?
As I understand it, when physicists talk about something behaving both like a particle and a wave, what they mean is that it has momentum like a particle, but its position is determined ...
2
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1answer
128 views
Deducing from the double slit experiment that electrons mostly behave like particles
I saw this video of a lecture by Feynman where he said that electrons behave like particles when there is a photon source to detect which slit they pass through. Does this imply that electrons mostly ...
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2answers
238 views
What is the relationship between distinguishability and probability in Quantum mechanics?
Firstly I am sorry for any awkward English expressions.
Recently I'm reading "Feynman Lectures on Physics - Quantum Mechanics" and come to have a single question.
In the book Feynman explains, "You ...
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1answer
95 views
How would a semi-classical particle react to the double slit experiment?
As far as I know, there is a smooth transition between quantum and classical regimes, so that even classical particle like a massive object has a wavefunction associated with it. However, the double ...
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1answer
209 views
What happens in this revised double-slit experiment?
Put the classical electron-emitting double-slit apparatus in a sealed box. At each slit there's a counter to check whether an electron has passed it or not, so had the apparatus been left in open, we ...
