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The Poisson distribution can be written as P(k,p)=/k! (see e.g. Melissinos & Napolitano Pg. 438). This...

The Poisson distribution can be written as P(k,p)=p^{k}e^{-p}/k! (see e.g. Melissinos & Napolitano Pg. 438). This distribution gives the probability that an event happens exactly k times during an experiment, with p the average probability that this event would happen if the experiment was repeated many times. Thus, if R is the average rate that photons enter a double-slit experiment, the average probability of finding a photon in the experiment can be written as p = LR/c. Here c is the speed of light and L=0.50 m is the distance from the double-slit to the detector.

Question 1. Suppose that the rate of photons entering the double-slit experiment is R = 4261913 photons/s. The percentage of time that there is only a single photon (k=1) in the experiment is ____ %.

Question 2. Suppose that the rate of photons entering the double-slit experiment is R = 3834109 photons/s. The percentage of time that there is more than one photon (k>1) in the experiment is ____ %.

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