All Questions
Tagged with quantum-entanglement wavefunction-collapse
43
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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
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2
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Decoherence/wave function collapse between entangled photon pair
If photon 1 and 2 are position entangled and they go in different directions, would making a measurement on photon 1 effect photon 2? If photon 1 is detected can photon 2 still create interference?
user86072
0
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1
answer
457
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Wave function collapse of entangled photons?
If we have two entangled photons then they are described by the same wave function. But if I measured the position of the signal photon and it collapses into a position, would the idler photons ...
user86072
5
votes
1
answer
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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 ...
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Causality in space-like separated collapse of entangled pairs
Suppose two spacelike-separated measurement events take place on an entangled pair of particles, both of which events, in isolation, would cause the entanglement to collapse.
It is impossible to say ...
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Is wavefunction collapse “global”?
I have the feeling that the premises of this question may not be coherent (so to speak), but here goes:
Suppose we have a system $X$ in a quantum superposition between states $0$ and $1$, say, with ...
- 357
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3
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Precedence and quantum entanglement: The Alain Aspect experiment in spacetime
Recall that the spin components of a spin-entangled pair do not exist until one of the pair undergoes quantum observation, at which time both of the pair immediately obtain quantum random opposing ...
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1
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If Alice is moving at relatavistic speeds compared to Bob, is collapse still simultaneous?
I have read some papers about experimental proof of non-locality involving a laser that goes through a beam-splitter and then each "half" goes to an observer (traditionally "Alice" and "Bob"). It has ...
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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 ...
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How is it possible that quantum phenomenons (e.g. superposition) are possible when all quantum particles are being constantly observed?
I don't understand how quantum mechanics (and therefore also quantum computers) can work given that while we work with quantum states, particles that this quantum state consist of cannot be observed, ...
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What happens to entangled particles when momentum is measured?
In Wikipedia it is mentioned that position and momentum can be entangled as well as spin and polarization etc. I assume etc. is charge etc.
I understand how if you measure spin up on one of a pair you ...
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Quantum Entanglement - Measuring Twice
In the answer here and on the wiki article and many other articles it is mentioned that if one of 2 entangled particles is measured their state collapses according to the Copenhagen interpretation.
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- 179
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Entanglement and the double slit experiment
Is the double slit experiment an example of entanglement when it seems as if the photon is going through both slits? Or put another way, is it at this stage when we attempt measurement we see a photon ...
