Photon-counting distribution in squeezed states
Apostol Vourdas, Richard M. Weiner · Physical Review A · 1987
We calculate the counting (multiplicity) distribution ${P}_{N}=〈N|\ensuremath{\rho}|N〉$ where $\ensuremath{\rho}$ is (i) the density matrix corresponding to a (pure) squeezed state and (ii) the density matrix of a superposition of squeezed states with thermal light. In the first case, we find that ${P}_{N}$ is an oscillating function of $N$. In the second case, this behavior, characteristic for squeezed states, disappears even for small amounts of noise.