What is the point to study Anti-bunching?

[Lizzie Mann]

I see lots of scientists study photon blockade and anti bunching effect. It confuses me so much that even though anti bunching and photon blocked are observed. But in what way the study of these two effects would affect any fields of our world, or the scientific research?

 

[f95toli]

The "real world" application of an anti-bunching experiment would be to study single photon sources. These in turn are useful in all sorts of situations, most notably in quantum cryptography.