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Can double slit be explained via phase shift?

by San K
Tags: double, explained, phase, shift, slit
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San K
Jun5-11, 03:43 PM
P: 915
The interference pattern in

- the mach zehnder interferometer and
- the DCQE

both are explained, well, by the phase shift.

now lets look at our simple double slit single photon interference

lets assume the wave splits into two and goes through both the slits

now the waves will interfere if in same phase (which they are unless we try to observe which-way)

however when we try to observe (which slit) we, perhaps, cause a phase shift?

and this phase shift is responsible for no-interference pattern?

Also entanglement is a phase relationship?

Also entanglement can happen between photons or even between the photon and select parts of the apparatus (such as which-way detector)?
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