41
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What experimental proof of quantum superposition do we have?
"Being in superposition" is not an objective property of a quantum mechanical state. Quantum mechanical states live in a Hilbert space, where, since it is a vector space, every state can be ...
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16
votes
What experimental proof of quantum superposition do we have?
I guess you might know that if you have a linear equation $\mathcal{L}$ and two solutions of it, then a superposition of these solutions is also a solution of this linear equation.
$$
\mathcal{L}(f(x))...
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4
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What experimental proof of quantum superposition do we have?
The answers to your questions are immediate consequences of the definition of a quantum state.
Every quantum state is a superposition for the same reason that every integer is a sum of other integers....
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3
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What is the consensus among physicists on whether quantum mechanics has non-locality?
I don't think there is a consensus among physicists. I think the reason for the lack of consensus is that this issue is ultimately an issue of interpretation of quantum mechanics, and does not have a ...
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2
votes
What experimental proof of quantum superposition do we have?
Wave Nature
As many have pointed out, the double-slit experiment is perhaps the canonical demonstration of superposition and a macroscopically visible demonstration of quantum mechanics. But the ...
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2
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Does a quantum measurement change the state in the past?
Does a quantum measurement change the state in the past?
No.
Or, at least, it is completely inconsistent with mainstream theory (and well-known results like the Born rule) to say that a measurement ...
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1
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Does a particle still behave as a wave after being detected as a particle?
...and leaves a pattern of a particle on the screen (the pattern being two humps that represent the two ranges of positions the photon land on).
You should be a little careful about how you describes ...
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1
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What is the consensus among physicists on whether quantum mechanics has non-locality?
It's a bit of a complicated question. The simple answer is that there is no consensus, but there's more to know than that.
Many have thought about this to the extent that one does after one or two ...
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1
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What experimental proof of quantum superposition do we have?
Now the question: Has it been somehow proven that a physical entity can a some point in time and space have a dual state (independently of the model)?
Science doesn't prove statements. Scientists ...
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1
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What experimental proof of quantum superposition do we have?
is it only that quantum mechanics is the only known model that allows us to explain things we otherwise couldn't?
Here are two examples from my side.
(1) Quantum dots produce entangled photons in ...
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