- #1
maxverywell
- 197
- 2
Why is the probability of one-photon loss from a cavity in the time interval ##[t, t+\delta t]## is:
##\kappa \delta t\langle \psi(t)| \hat{a}^{\dagger}\hat{a} |\psi(t)\rangle##
where ##\kappa## is the decay rate. It looks like the Fermi Golden rule but it's not exactly it.
##\kappa \delta t\langle \psi(t)| \hat{a}^{\dagger}\hat{a} |\psi(t)\rangle##
where ##\kappa## is the decay rate. It looks like the Fermi Golden rule but it's not exactly it.