Multimode theory of measurement-induced non-Gaussian operation on wideband squeezed light: Analytical formula

摘要: We present a multimode theory of non-Gaussian operation induced by an imperfect on/off-type photon detector on splitted beam from wideband squeezed light. The events are defined for finite time duration $T$ in the domain. output state is measured homodyne with bandwidh $B$. Under this time- and band-limitation to quantm states, we develop formalism evaluate frequency mode matching between on/off trigger channel conditional signal channel. Our applied CW pulsed schemes. explicitly calculate Wigner function realistic situation. Good achieved $BT\alt1$, where discreteness modes becomes prominant, only few become dominant both channels. If projected nearly onto single most regime, striking non-classical effect will be observed statistics. increase $BT$ dark counts degrades effect.