Generation of sub-Poissonian pulses of light
Ruo-Ding Li, Sang-Kyung Choi, Chonghoon Kim, Prem Kumar · Physical Review A · 1995
Sub-Poissonian pulses of light are generated by means of traveling-wave optical parametric deamplification. Upon direct detection the quantum noise on the deamplified pulses is measured to be below the shot-noise limit by as much as 0.5\ifmmode\pm\else\textpm\fi{}0.2 dB (11\ifmmode\pm\else\textpm\fi{}4 %). The parametric-gain dependence of the measured Fano factor---direct-detection noise as a fraction of the shot-noise limit---agrees with the quantum theory of the amplifier when diffraction effects are taken into account.