How can this process affect the right photon that might have been on the other side of the lab when the measurement was made? If we exclude the idea that the measuring devices affect the photon remotely, how then will we explain the fact that...
How could this process affect the right photon that may have been on the other side of the lab when the measurement was performed?
If we exclude the idea that measuring devices affect photons remotely, then how do we explain the fact that pairs of photons are always observed “in this experiment” in two orthogonal polarizing directions?
One possibility is to abandon the traditional quantist view that measurement results are random and deterministic, and adopt the deterministic “hidden variables” theory (see Chapter II). This means that the result of any measurement will be deterministic and specific according to a hidden trait in the photon. Each photon carries with it all the necessary information that describes its behavior if it passes in the polarity in any direction.
This argument is close to that of Einstein and his colleagues in the original paper, entitled “Is it possible that the quantum description of reality is complete?” If this device on the left side did not affect the right photon, then the whole experiment (pictured 3.23) must have measured some quality of the right photon without changing its state: “Even if it is not the polarization itself, it is something else that has to do with a hidden quality that is determined by the direction of polarization.”
“If, without changing the state of the system or in any way confusing it, we can expect a definite physical quality (i.e., a probability of 100%), then there is a real physical element corresponding to that physical quality.”
For the above argument to be generally true, we must be able to establish a theory of local "hidden variables", which includes a correct explanation of all possible experiments on photon pairs. Not only in the case of measuring polarization in two orthogonal directions but in all other cases, as if the first polarizer [H/V] or the other polarizer [?45]. He then found that no local "hidden variables" theory agrees with quantum physics in all cases.
- Alistair Ray.
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Source: Published on Facebook's "Braheen Center" page