[saalweachter]

Just a note, when the number of volunteers is less than the number of authors, you're probably looking at self-experimentation.

It's not uncommon when you have a cool idea you want to test that doesn't rely on naive subjects and it would take longer to get permission to & recruit outside volunteers -- just grab a few people from around the lab and try it out.

[zerohp]

Kwiat was already recruiting undergrads in 2013 for this experiment. If I recall, he did not yet have a reliable single photon source but was expecting to have it very soon.

I was in his undergrad quantum physics (for engineers) course at the time.