Dave, I'm not sure this is what you are asking for, but there are several ways to implement (unitary) multi-path interferometers for photons or particles with spin. These are non-trivial papers, but see for example --
"A physical system which can be forced to execute an arbitrary unitary transformation, and its use to perform arbitrary tests" (I cannot supply the URL, but you can get the two page PDF by searching for the exact title string and the author name "Elihu Lubkin") "Universal Programmable Quantum Circuit Schemes to Emulate an Operator" http://arxiv.org/abs/1204.3600 -- LP David Roberson wrote: > I was wondering if anyone has seen an experiment somewhat like a double > slit experiment with photons that excludes them from passing through a > combination of blocked slits while allowing them to pass around most of > the apparatus? If this is possible to perform, then instead of trying to > figure out which of the two slits the photon passes through, there would > be a very large number of possibilities. > > This type of experiment if possible might help shed light upon the > particle/wave duality. I assume that an interference pattern will be > generated that is inverse to the normal one. > > A wave model should have no problem describing the expected pattern at the > output and I wonder if the same would be true for a particle. > > Give it some thought and write down your ideas as this might be an > interesting endeavor. > > Dave >
