Watching a wavefunction gradually collapse

In summary, there was a discussion on some beautiful experimental work that observed the progressive collapse of a wavefunction and included beautiful illustrations. The topic was not previously discussed and a thread was started on it. However, the experiment cannot explain a type of collapse necessary for EPR effects. The experimenters were focused on Fock states, even though the experiment was local and the states cannot be considered real Fock states according to Rovelli's theory. Despite this, the experiment is still intriguing, although the experimental setup and results-processing are difficult to understand.
  • #1
marcus
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some very beautiful experimental work, observing the progressive collapse of a a wavefunction.

beautiful illustrations too

I didn't see this discussed here so decided to start a thread on it

http://arxiv.org/abs/0707.3880
 
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  • #2
It cannot explain a kind of collapse needed, e.g., for EPR type effects.
 
  • #3
I notice that they're very keen on their Fock states... even though it's a local experiment, so the states can't be *real* Fock states (ala Rovelli's "Global particles, local particles"). Still, it's fascinating! Unfortunately, I can't make heads or tails of their experimental setup, nor of the results-processing that they do.

Must try harder, I guess.
 

What is wavefunction collapse?

Wavefunction collapse is the process in which a quantum system transitions from a state of superposition (being in multiple states simultaneously) to a definite state when it is observed or measured.

What causes wavefunction collapse?

The exact cause of wavefunction collapse is still a topic of debate in the scientific community. Some theories propose that it is due to the interaction between the quantum system and the measuring apparatus, while others suggest it is a result of the observer's consciousness.

What are the consequences of wavefunction collapse?

The collapse of a wavefunction has significant implications for our understanding of quantum mechanics. It means that the act of observation or measurement can affect the behavior of particles on a fundamental level, which challenges the traditional concept of a deterministic universe.

Can we see wavefunction collapse happening in real-time?

No, we cannot directly observe the collapse of a wavefunction. The process happens on a microscopic level and is instantaneous, making it impossible to observe with our current technology. However, we can indirectly study the effects of wavefunction collapse through experiments and observations.

Is wavefunction collapse a proven phenomenon?

Yes, wavefunction collapse is a well-established concept in quantum mechanics. It has been confirmed through numerous experiments and is a fundamental aspect of many quantum theories and models. However, there is ongoing research and debate surrounding its exact mechanism and implications.

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