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 photonsAdd:
http://www.natureasia.com/en/research/highlight/10786
https://en.wikipedia.org/wiki/Scotopic_vision
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 [[File:Berthold_Lumat_LB9501_manual.pdf|thumb]the Manual] 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. And
RLU factor
390nm - 620nm
Quantum-Efficiency of typ 24% at 420nm
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
Papers:
http://www.sciencedirect.com/science/article/pii/S0168900214014041
