Quantum amplification with correlated quantum fields
Z. Y. Ou · Physical Review A · 1993
Quantum fluctuations of a phase-insensitive amplifier are studied when the quantum fluctuations of the input field are correlated with the amplifier's internal modes. It is found that noise-free quantum amplification can be achieved under certain conditions and only requires finite correlation between the quantum fluctuations of the input field and the amplifier's internal mode.