Quantum states recording screens

Thus, whatever a recording screen will record, this recording must be (co) related to the interaction with the quantum state generated at the double slit this latter being corelated to the source quantum state. 

The recording screen does not create correlations backward with events that might have happened at plane xs it records a material system interaction only. This is the place for local interactions. Of course, any correlation that might be set up at xs is included in the quantum state impinging at xD. This caveat may be useful later on (Cf. Section 4). 

The just exposed correlations then do not originate between a measuring apparatus and system being observed as a matter of fact, there is no need for an observer. The quantum state at the recording screen is totally independent from the presence of the sensitized screen element. Bearing in mind that a quantum state does not represent a particle in laboratory space and the idea that its square modulus stands for the probability of finding the material system (particle) in a volume element is foreign to the present view, the underlined result obtained from the present theoretical approach is reasonable from a physical point of view It is measurement of a wavefunction that is a basic element of the theory. 

Such will be the patterns if one could get imprinted the quantum state in one step. Let us examine the situation at recording screens. 

From that figure, after the first screen (DS-1), the scattered states are collimated by sets of wider slits. The point is that the resulting quantum state has the same nature for both beams that is, they are prepared in the same manner. After collimation zones, a laser beam is set up perpendicular to the propagation direction from the slits in their way to two cavities thereon the physical quantum states propagate until interacting further away with the second two-slit screen (DS-2). A recording screen completes the scene. 

Case 1 In Eq. (28), Q = Q and C2 = C2 and nothing was placed between DS-1 and DS-2 before the recording screen. Then, both beam states are pretty much the same The conclusion is simple if this quantum state interacts with the double slit at the right hand side, interference pattern will show up at a recording screen. 

The scheme is used to help construct quantum states adapted (relevant) to the new situations. Interaction operators represent slits. The quantum states obtained are those that will interact at the slits located on the right screen. These states are then scattered by the slits and proceed to check the quantum states impinging at the recording screen. 

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