All Questions
10
questions
0
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1
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119
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Postulate of wave function collapse and entanglement
Can we say that a measurement on a system of $k$ entangled particles is the cause of the collapse of the wave function into $k$th states simultaneously?
- 1,400
1
vote
0
answers
45
views
Quantum entanglement information through time of collapse
(I've tried my best to find an existing question that asks this question exactly)
From what I understand, given two entangled particles, one held by Alice and one by Bob, when a measurement is done by ...
- 111
-2
votes
6
answers
461
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Problem regarding quantum entanglement and special relativity
So this question is about the strange phenomenon of quantum entanglement, or "spooky action at a distance", as Einstein called it. In particular, it's about the simplest conceivable case of ...
- 863
1
vote
1
answer
67
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Is there anyway to know when the wave function collapse?
If we get 2 entangled particles and move them away from each other, is there a way to put one of them is some kind of "sensor" that would tell if the entangled particle have been measured?
If yes, how ...
- 141
2
votes
1
answer
139
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If I have a two-electron problem, and I measure the position of one electron. What happens to the quantum description of the other?
Suppose I have a two-electron system, and they are left alone for a long time, such that I do not know where each of them is. I then measure one electron at position $\vec r_1$. Does this collapse the ...
- 1,356
0
votes
0
answers
123
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Instantaneous quantum features
Two of the most striking quantum oddities are entanglement and the wave-function collapse or state vector reduction.
Firstly, quantum entanglement is the quantum phenomena involving states of ...
- 6,611
-3
votes
2
answers
167
views
Does Quantum Entanglement happen between two wavefunctions? [closed]
Does the entanglement happen between two particles or two wavefunctions? If it's wavefunction then what happens to the two wavefuntions after getting entangled?
7
votes
3
answers
3k
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What processes cause the collapse of a wavefunction and break entanglement?
This question states that measuring the spin of an entangled particle causes the collapse of the wavefunction and thus the entanglement is broken.
Then this question states that we don't know what ...
- 363
5
votes
1
answer
583
views
Mathematical formulation of partial wave function collapse
If given a wave function which is an element of a Hilbert space $\mathcal{H}$ which is a tensor product of two other Hilbert spaces $\mathcal{H}_1\otimes\mathcal{H}_2$, how do you formulate ...
- 161
4
votes
2
answers
2k
views
Entropy before and after collapse of the wavefunction and interpretation?
Seems like it might be pretty rudimentary but I want to see if my thinking is on the right track as well as what the result means.
The question is, is the entropy of the collapse of a wavefunction or ...
- 293