- #1
valleyman
- 26
- 0
Hello all, I'm studying classical and quantum coherence in optics and I can't understand what's the physical meaning of second order coherence. I mean, what's the fundamental difference between it and the first order one? I know they are defined differently but I can't see in which case and why it could give more info than 1st order (exception made for recognizing if the light beam is classical or quantum). And, regarding this, what are, physically, quantum coherent states? why are they defined so? The common answer could be "because they are all orders coherent" but what does it mean?
Sorry for all those questions but I'm really confused
Sorry for all those questions but I'm really confused