Quantum Entanglement, Dark Counts, Coincidence Detection

[mindwalker_i]

74. I've already bought the most expensive equipment (I hope)

The detectors were quite expensive, and hopefully nothing else will come along. The BBO crystal didn't even come close to those.

With a MZ interferometer, it should be possible to get it tuned just right so that all of the light comes out one port. It's when the beams are not exactly going in the same direction - diverging slightly - that you get interference patterns. If I can get my equipment up to snuff and get it so almost all the light does come out of one port, then sticking a finger in one path will result in half the light coming out of each port (by port, I mean the two outgoing faces of the final beam splitter). So if 20% of photons are from entangled pairs and I collapse their wave functions remotely, then the balance between light coming out of each port should be disturbed in a measurable way, like 10% will come out of one port as opposed to 0%.

But first, I need to get better mounts made

I think I've been to Paul's site - I remember the background from a page on Dopfer's experiment that used it. I'll have to delve deeper into his whole site.

And thanks for the note(s) of support! I keep trying to get myself to write a blog about this, but then I get busy with stuff (like machining).