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±0.2 dB (11±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.
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics