100 photons, one after the other, are sent to a photon detector that has a quantum efficiency of 0.1. How many times will the detector detect photons

Answer 1

Thank you for your question!

You can think of the quantum efficiency as the probability that the photon detector will recognize the photon. What that means in this case is that there is a 0.1 or 10% chance of each individual photon being detected.

So on average, there would be 10 photons detected in this scenario (100 x 0.1 = 10) :)