I understand that this may not be the type of question allowed here, but I'm not sure. Feel free to close this if you feel that it shouldn't be here
I'm planning on carrying out a certain set of experiments regarding quantum mechanics and double-slit setups in half a year or so. The experiments will be similar to the quantum eraser. The issue is, I don't know what sort of experiments are feasible. I'd like someone who has experience with such optical instruments to explain the avaialiblity, cost, and feasability of the following instruments. Also if they can be found in a lab of any institution that deals with QM.
Whenever I ask for a value, I only want a ballpark figure or an order of magnitude
Single-photon detectors: I've seen these referred to as "click-detectors". How accurate are they? Do they measure every single photon that eneters or only a significant fraction of them?
One-photon-at-a-time emitters: How accurate?
If I send a single photon through a fiber optic of some length, how much percentage of the time will it be lost? If there are different types of fiber optics, please let me know which one is the best for this.
If I have a pair of parallel-running fiber optics, how coherent can they keep two coherent sources? For example, if set up a normal YDSE, feed fiber optics into the slits, and feed the source into the fiber optics some $s$ meters away, will I observe a fringe pattern?
Screen:What sort of screens do we get nowadays for YDSEs? Can they detect single photons with xyz accuracy? How many photons are required on a screen to see a distinct fringe pattern? In the quantum eraser, they used a detector on a tractor. Any reason for doing this instead of using a screen? Are there any screens which can detect single photons, pinpoint their location with xyz accuracy, and feed the data to a computer?
Environment: While doing a single-photon YDSE, what sort of environment is required? After all, we need to block all external photons. Do we need to sheath the YDSE with something? If so, how will we view the results without tampering with them (taking a photographic screen out to view it can easily damage it)?
Mirrors/lenses: How good are mirrors for directing single photons? Do they eat up xyz% of the photons? Do they tamper with coherence?
Beam splitters: Same situation as mirrors.
Beta-barium borate crystal (used in the quantum eraser): Same situation as splitters and mirrors.
An example setup would be where I use a beam splitter to create two possible paths for a single photon. These paths are directed to a YDSE, in such a way that they cannot interfere till they reach the slits. One path corresponds to one slit. I've though of fiber optics so that the paths are kept from interfering with each other. A thin opaque barrier might also do the trick. For this experiment to work, basically, it should be able to build up an interference pattern from one photon emitted at a time, with the interference happening ONLY in the YDSE (the reason for this is that I want to do something else involving the BBO crystal in between).