DIY Single Photon Generator

Photons usually come in packs. Single Photons are cool. Where to get them? Seeing low light (scotopic vision):

https://en.wikipedia.org/wiki/Scotopic_vision

Of cones and rods: http://math.ucr.edu/home/baez/physics/Quantum/see_a_photon.html Neuroscience: Humans can detect single photons: http://www.natureasia.com/en/research/highlight/10786 Experiment with toads' rods placed into electrodes: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1281447/

https://en.wikipedia.org/wiki/Scotopic_vision

Example: 1 photon (540nm) per second per solid angle = 3,6 · 10−19 Candela (cd) Same Condition: 10^12 photons = Dial of a watch with glow in the dark color(ucd) 10^17 photons = Fire Fly / LED (10 mcd / 50 mcd) 10^19 photons = candle (1cd) Luminometer: Got a Lumat, LB 9501 Single Tube Luminometer from berthold.com Despite the thing dating back to 1994 it is fully working and can detect down to below 1000 photons per second. Here you find  with lot's on interesting information on photon counting. The "Relative Light Unit" (RLU) represents 1/10 of the photons detected by the photon multiplier. With the tube having a Quantum-Efficiency of typ 24% at 420nm. Multiplied by a RLU tube correction factor, in our case 1.040. So we need to multiply the RLU reading by about 43 to get the number of photons. The luminometer is sensitive in the range of 390nm - 620nm.

Literature: https://www.amazon.com/Single-photon-Devices-Applications-Charles-Santori/dp/352740807X https://www.lap-publishing.com/catalog/details//store/gb/book/978-3-659-50846-2/towards-single-photon-sources http://www.photonicsolutions.co.uk/company.php?comp=5765 http://www.micro-photon-devices.com/Products/Photon-Counters/InGaAs-InP Human Double Slit: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4729532/ Photons per power: https://electronics.stackexchange.com/questions/174314/calculate-number-of-photons-of-a-light-source-given-the-lumen-and-the-color-spec

Papers: http://www.sciencedirect.com/science/article/pii/S0168900214014041